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学者姓名:袁占辉
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Chemoselectivity often garners significant attention in organic synthesis, serving as a primary strategy for producing a variety of functionalized products from the same substrate. The first environment of solvent-controlled chemoselective asymmetric hydroperoxidation and hydroxylation of 5-pyrazolone ketimines has been achieved, using an acid-base bifunctional chiral squaramide as the organocatalyst, affording a range of enantioenriched products of hydroperoxidation and hydroxylation with high stereoselectivities (up to 90% ee).
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| GB/T 7714 | Lin, Xiangfeng , Long, Bo , Lei, Hanhui et al. Environment of Solvent-Controlled Chemoselective Asymmetric Hydroperoxidation and Hydroxylation of 5-Pyrazolone Ketimines Catalyzed by Bifunctional Organocatalysts [J]. | ACS OMEGA , 2025 , 10 (11) : 11225-11230 . |
| MLA | Lin, Xiangfeng et al. "Environment of Solvent-Controlled Chemoselective Asymmetric Hydroperoxidation and Hydroxylation of 5-Pyrazolone Ketimines Catalyzed by Bifunctional Organocatalysts" . | ACS OMEGA 10 . 11 (2025) : 11225-11230 . |
| APA | Lin, Xiangfeng , Long, Bo , Lei, Hanhui , Liu, Terence Xiaoteng , Yuan, Zhanhui . Environment of Solvent-Controlled Chemoselective Asymmetric Hydroperoxidation and Hydroxylation of 5-Pyrazolone Ketimines Catalyzed by Bifunctional Organocatalysts . | ACS OMEGA , 2025 , 10 (11) , 11225-11230 . |
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This paper presents a pyramid solar still with modifications to enhance energy, exergy, economic, and environmental performance, comparing a conventional distiller to a modified version with advanced features for improved efficiency. The system incorporates several innovative features to enhance performance. First, it includes a pyramid-shaped distillation unit integrated with evacuated tube technology with 200 L capacity storage, utilizing thin-film evaporation through a black jute structure for improved heat transfer. Second, four flat reflectors are strategically positioned around the pyramid distiller, aligning with the water heater to focus additional solar energy onto the system, further boosting the thin-film evaporation process. Lastly, a water cover cooling system, operating at a rate of 4 L per hour, was incorporated to regulate the increased evaporation rate resulting from these enhancements. The three modified distillers attained a daily yield of 5.78, 7.31, and 9.36 L/ m2 while the reference distiller did not exceed 3.32 L/m2. In other words, the modified distillers achieved productivity improvement ratios of 83.49, 120.18, and 193.42 %. The last case (best case) achieved daily exergy and energy efficiencies of 5.16 and 48.82 %, respectively, which was higher than those of the reference distiller by 125.60 and 43.42 %, respectively. Considering the heat transfer coefficients, the last case exhibited a daily average value of 59.89 W/m2 & sdot;K which was 146.36 % higher than the reference distiller. From an economic and environmental perspective, the last case reduced the cost of water to 0.0124 $/L along with carbon dioxide mitigation of 5.64 tons CO2.
Keyword :
Cover cooling Cover cooling Evacuated tube Evacuated tube Hang wick Hang wick Reflector Reflector Solar still Solar still Sustainability Sustainability
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| GB/T 7714 | Sharshir, Swellam W. , Rozza, M. A. , Joseph, Abanob et al. An augmented pyramid distiller combining thin-film evaporation, reflectors, water heater, and cover cooling: Thermo-economic-environmental approach [J]. | SOLAR ENERGY , 2025 , 288 . |
| MLA | Sharshir, Swellam W. et al. "An augmented pyramid distiller combining thin-film evaporation, reflectors, water heater, and cover cooling: Thermo-economic-environmental approach" . | SOLAR ENERGY 288 (2025) . |
| APA | Sharshir, Swellam W. , Rozza, M. A. , Joseph, Abanob , El-Samadony, M. O. A. , Al Bahir, Areej , Jang, Sung-Hwan et al. An augmented pyramid distiller combining thin-film evaporation, reflectors, water heater, and cover cooling: Thermo-economic-environmental approach . | SOLAR ENERGY , 2025 , 288 . |
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Shape memory polyimide (SMPI) has excellent thermal stability and chemical inertness, and was used in high-end applications, such as aerospace, microelectronics, etc. However, the unsatisfied strength and toughness is currently the key challenges of SMPI. Herein, lignin, a natural polymer, with abundant rigid benzene ring structures and reactive functional groups is used to enhance SMPI's mechanical properties and shape memory performance. The formation of hydrogen bonds and pi-pi interactions between lignin and SMPI matrix resulted in the simultaneously enhancement of strength and toughness through in-situ polymerization. As a result, the tensile strength and strain of composite films is increased from 73.45 MPa and 5.2 % to 114.5 MPa and 90.2 % at lignin content of 4 wt%, which are remarkably increased by 156 % and 1734 %, respectively. The shape recovery triggering temperature decreases similar to 7 degrees C with the increase of lignin content. What's more, the shape fixation rate (R-f: 99.8 %) and recovery rate (R-r: 100 %) of L/SMPI composite films was also improved, and various complex shapes can be molded. The good thermal stability was well maintained, in which the decomposition temperature (T-d) is similar to 507 degrees C and the glass transition temperature (T-g) is similar to 181 degrees C. The excellent performance of lignin-modified shape memory polyimide (L/SMPI) opened a new ear for high value application of natural polymer, particularly in shape memory material.
Keyword :
Lignin Lignin Polyimide Polyimide Shape memory performance Shape memory performance Strength Strength Toughness Toughness
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| GB/T 7714 | Wang, Qiang , Li, Xin , Kan, Mengxin et al. Lignin enhanced shape memory polyimide with superior mechanical property and performance [J]. | CHEMICAL ENGINEERING JOURNAL , 2025 , 507 . |
| MLA | Wang, Qiang et al. "Lignin enhanced shape memory polyimide with superior mechanical property and performance" . | CHEMICAL ENGINEERING JOURNAL 507 (2025) . |
| APA | Wang, Qiang , Li, Xin , Kan, Mengxin , Gao, Hui , Liu, Shanshan , Ji, Xingxiang et al. Lignin enhanced shape memory polyimide with superior mechanical property and performance . | CHEMICAL ENGINEERING JOURNAL , 2025 , 507 . |
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This study experimentally investigates the integration of Fe-Co-Al @ BTC Metal-Organic Framework (MOF) into a double slope solar still (DSSS) to enhance the evaporation rate. Three configurations were tested: MOF as a nanofluid in the basin water (Case I), MOF as a nanofluid with an atomizer (Case II), and MOF for thin film evaporation (Case III). A comprehensive 4E analysis-Energy, Exergy, Economic, and Environmental-evaluated the performance of the DSSS relative to conventional solar still (CSS). The MOF improved DSSS performance through its superior thermal properties and large surface area. Performance results showed notable improvements. Energy efficiency increased significantly, with Case III improving by 103 %, Case II by 82.3 %, and Case I by 53.3 %. Exergy efficiency witnessed more dramatic enhancements, with Case III rising by 162 %, Case II by 137 %, and Case I by 70.6 %. Accumulated distillate followed a similar pattern, with Case III rising by 92.12 %, Case II by 68.54 %, and Case I by 34.66 %. Case III demonstrated the most promising outcomes, achieving the lowest freshwater cost at 0.0122 $/L-a 26.22 % reduction from CSS. Additionally, the MOF integration resulted in CO2 mitigation ranging from 1.49 to 2.2 tons annually, generating carbon credits between 37.13 and 54.94 $/year.
Keyword :
Atomizer Atomizer Energy and exergy efficiency Energy and exergy efficiency Fe-Co-Al @ BTC Fe-Co-Al @ BTC Metal-organic framework Metal-organic framework Solar desalination Solar desalination Thin film evaporation Thin film evaporation
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| GB/T 7714 | Sharshir, Swellam W. , Sharaby, Mosaad R. , El-Naggar, Ahmed A. et al. Utilizing a novel metal-organic framework for clean water production: Synergistic evaporation boost in double slope distiller [J]. | CASE STUDIES IN THERMAL ENGINEERING , 2025 , 68 . |
| MLA | Sharshir, Swellam W. et al. "Utilizing a novel metal-organic framework for clean water production: Synergistic evaporation boost in double slope distiller" . | CASE STUDIES IN THERMAL ENGINEERING 68 (2025) . |
| APA | Sharshir, Swellam W. , Sharaby, Mosaad R. , El-Naggar, Ahmed A. , Lotfy, Lotfy A. , Ismail, M. , Al Bahir, Areej et al. Utilizing a novel metal-organic framework for clean water production: Synergistic evaporation boost in double slope distiller . | CASE STUDIES IN THERMAL ENGINEERING , 2025 , 68 . |
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The research on bio-sourced adhesives has emerged as an essential topic for advancing the wood industry. Starch, typically used as a filler to modify synthetic resins, often requires complex pre-treatment when employed as a starting material for bio-sourced adhesives. In this work, a fully bio-sourced starch-phytic acid wood adhesive with superior water resistance and ultra-high flame-retardant properties was developed using the concept of "depolymerization and reconstruction" through a straightforward one-pot strategy. The co-reaction between corn starch (CS) and phytic acid (PA) established an effective cross-linking network within the adhesive, ensuring robust adhesion to the wood substrate and delivering excellent bonding performance and water resistance. The wet shear strength of plywood bonded with the CS-P0.75 adhesive reached 1.09 MPa, surpassing the requirement of China National Standard (GB/T 9846-2015, >= 0.7 MPa). The particleboard bonded using CS-P0.75 adhesive achieved an internal bond (IB) strength and modulus of rupture (MOR) of 1.09 MPa and 11.89 MPa, respectively, meeting the requirements of the China National Standard GB/T 4897-2015 for P3 type particleboard. Moreover, the CS-P adhesive demonstrated exceptional flame-retardant performance, with a limiting oxygen index (LOI) value of approximately 70 %. This study offers a convenient and sustainable approach to developing a promising starch-based wood adhesive with a reliable combination of properties, presenting a viable alternative to conventional synthetic resins (urea-formaldehyde, melamine-urea-formaldehyde, and phenolic resins).
Keyword :
Bio-based adhesive Bio-based adhesive Corn starch Corn starch Depolymerization and reconstruction Depolymerization and reconstruction Flame-retardancy Flame-retardancy Phytic acid Phytic acid Water resistance Water resistance
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| GB/T 7714 | Wu, Haizhu , Wen, Tianguo , Ding, Qiaomei et al. A sustainable adhesive via one-pot simple preparation derived from bio-sourced phytic acid and corn starch for green wood panels: Ideal bonding performance and ultra-high flame retardancy [J]. | CHEMICAL ENGINEERING JOURNAL , 2025 , 508 . |
| MLA | Wu, Haizhu et al. "A sustainable adhesive via one-pot simple preparation derived from bio-sourced phytic acid and corn starch for green wood panels: Ideal bonding performance and ultra-high flame retardancy" . | CHEMICAL ENGINEERING JOURNAL 508 (2025) . |
| APA | Wu, Haizhu , Wen, Tianguo , Ding, Qiaomei , Zhang, Jun , Du, Guanben , Charrier, Bertrand et al. A sustainable adhesive via one-pot simple preparation derived from bio-sourced phytic acid and corn starch for green wood panels: Ideal bonding performance and ultra-high flame retardancy . | CHEMICAL ENGINEERING JOURNAL , 2025 , 508 . |
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In the realm of sustainable materials, nanocellulose has emerged as a particularly noteworthy contender, garnering considerable attention with exceptional mechanical properties, biocompatibility, and renewability. Within the domain of conductive hydrogels, nanocellulose distinctive characteristics position it as a preeminent reinforcing and dispersing agent, thereby markedly augmenting the overall performance of hydrogels. This article reviews the progress of nanocellulose applications in conductive hydrogels and discusses its mechanism of action as reinforcing and dispersing agents in detail, as well as the preparation methods with different conductive fillers (carbon materials, conductive polymers, metal nanoparticles and metal ions). Additionally, the extant research findings on the mechanical, self-healing, self-adhesion and freeze resistance properties of the conductive hydrogels are comprehensively introduced. In conclusion, the article provides a comprehensive outlook on the ongoing issues of nanocellulose-based conductive hydrogels and their possible future directions.
Keyword :
Conductive hydrogel Conductive hydrogel Freeze resistance Freeze resistance Nanocellulose Nanocellulose Self-adhesion Self-adhesion Self-healing Self-healing
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| GB/T 7714 | Zhang, Meng , Chen, Ting , Xu, Ting et al. Functionalities and properties of conductive hydrogel with nanocellulose integration [J]. | CHEMICAL ENGINEERING JOURNAL , 2025 , 506 . |
| MLA | Zhang, Meng et al. "Functionalities and properties of conductive hydrogel with nanocellulose integration" . | CHEMICAL ENGINEERING JOURNAL 506 (2025) . |
| APA | Zhang, Meng , Chen, Ting , Xu, Ting , Zhang, Han , Wang, Xuan , Qi, Junjie et al. Functionalities and properties of conductive hydrogel with nanocellulose integration . | CHEMICAL ENGINEERING JOURNAL , 2025 , 506 . |
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This study explored the potential of two thermal energy storage materials - sand before demineralization (SBMR) and minerals after sand removal (MASR) - to boost the daily output of a hemispherical solar still (HSS). Both materials were prepared and characterized before being integrated into the HSS system for sensible heat storage. Additionally, the study focused on evaluating the effect of varying material depths, spanning from 0.25 cm to 2 cm, to identify the optimal depth for maximizing the HSS's performance. Two experimental setups were conducted: with and without an external condenser. A thermoenviroeconomic analysis was carried out to compare the performance of the modified HSS (MHSS) with SBMR, and MHSS with MASR to the conventional HSS (CHSS), both with and without the external condenser. Our findings demonstrate that a material depth of 0.75 cm optimizes productivity for MHSS configurations. Furthermore, incorporating an external condenser significantly enhances both thermal performance and productivity. Energy efficiency considerably increased, MHSS with SBMR showing a 57.13 % improvement and MHSS with MASR exhibiting an 88.35 % improvement over CHSS. Exergy efficiency also saw substantial gains, with the most significant improvement (85.26 %) observed in MHSS with MASR utilizing an external condenser. Daily yield was highest for MHSS with MASR, reaching 6.08 kg/m2 (an 88.24 % increase), followed by MHSS with SBMR at 5.06 kg/m2 (a 56.66 % increase). Regarding production costs, MASR-equipped MHSS without an external condenser achieved the most significant cost reduction (36.47 %) compared to CHSS.
Keyword :
Energy and exergy efficiency Energy and exergy efficiency Energy storage material Energy storage material External condenser External condenser Hemispherical distiller Hemispherical distiller Sand Sand Thermoenviroeconomic analysis Thermoenviroeconomic analysis
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| GB/T 7714 | Sharshir, Swellam W. , Sharaby, Mosaad R. , El-Naggar, Ahmed A. et al. Augmentation of thermo-environmental performance of hemispherical distiller utilizing low-cost thermal energy storage materials: A comparative study [J]. | JOURNAL OF ENERGY STORAGE , 2025 , 113 . |
| MLA | Sharshir, Swellam W. et al. "Augmentation of thermo-environmental performance of hemispherical distiller utilizing low-cost thermal energy storage materials: A comparative study" . | JOURNAL OF ENERGY STORAGE 113 (2025) . |
| APA | Sharshir, Swellam W. , Sharaby, Mosaad R. , El-Naggar, Ahmed A. , Ismail, M. , Abd EL-Gawaad, N. S. , Al-Dossari, M. et al. Augmentation of thermo-environmental performance of hemispherical distiller utilizing low-cost thermal energy storage materials: A comparative study . | JOURNAL OF ENERGY STORAGE , 2025 , 113 . |
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Cobalt-nickel metal-organic framework/activated carbon (MOF/AC) composites with tunable flower-like architectures were synthesized via a straightforward hydrothermal method, utilizing activated carbon as a structural and functional modifier. This modification increased the surface area from 20.3 m2/g to 164.5 m2/g, providing a high density of nucleation sites and optimizing the morphology for efficient ion diffusion and electrolyte permeability. The incorporation of activated carbon (AC) not only improved structural stability but also facilitated electron transfer, thereby enhancing conductivity. Among the synthesized composites, MOF/AC180 exhibited a specific capacitance of 731.8 F/g at 1 A/g, with 67.0 % retention at higher current densities. An asymmetric supercapacitor (ASC) based on MOF/AC-180 achieved an energy density of 35.9 Wh/kg at a power density of 750 W/kg, along with considerable cycling stability, retaining 91 % of its initial capacitance after 10,000 cycles. This study highlights the potential of using AC to enhance the structure and conductivity of MOF composites. The tunable morphology improves ion transport and electrochemical performance, making these materials viable for supercapacitor applications. Furthermore, the straightforward synthesis method and scalability provide a basis for future industrial applications across various multifunctional material fields.
Keyword :
Activated carbon (AC) Activated carbon (AC) Asymmetric supercapacitor Asymmetric supercapacitor Energy storage devices Energy storage devices Metal-organic framework (MOF) Metal-organic framework (MOF) Regulable morphology Regulable morphology
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| GB/T 7714 | Wang, Shirui , Lin, Jiande , Yuan, Zhanhui et al. Tunable architecture of cobalt-nickel metal-organic framework/activated carbon composites for superior electrochemical performance in asymmetric supercapacitors [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2025 , 684 : 647-657 . |
| MLA | Wang, Shirui et al. "Tunable architecture of cobalt-nickel metal-organic framework/activated carbon composites for superior electrochemical performance in asymmetric supercapacitors" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 684 (2025) : 647-657 . |
| APA | Wang, Shirui , Lin, Jiande , Yuan, Zhanhui , Luo, Lu , Zhang, Wenxue , He, Cheng et al. Tunable architecture of cobalt-nickel metal-organic framework/activated carbon composites for superior electrochemical performance in asymmetric supercapacitors . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2025 , 684 , 647-657 . |
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Zinc-ion batteries are considered a viable energy storage technology due to their superior safety, economic efficiency and environmental friendliness. Nevertheless, the drawbacks of the zinc anode, including dendrite growth, hydrogen evolution reaction and poor coulombic efficiency, seriously limit its practical application. Continuous interwoven networks with ions and electrons dual transport channels are effective in reducing the growth of zinc dendrites by promoting ion diffusion kinetics. Herein, carbon nanotubes (CNT)/cellulose nanofibers (CNF)/cellulose nanocrystals (CNC)/Zn self-supporting films with continuous interwoven network are constructed by a simple vacuum filtration and freeze-drying method. Furthermore, the pore size distribution of the self-supported films was modulated by adding CNF and CNC. When the CNF/CNC ratio was 8:1, the pore sizes of the zinc-ion anode films were concentrated in the range of 8-25 nm, had maximum electrical conductivity (1250 S/m), and excellent mechanical flexibility. As an optimized sample, the assembled symmetrical battery and the coin cell have excellent cycle performance, the efficiency of the assembled symmetrical battery was maintained at 100 % after more than 6000 cycles at 0.5 mA/cm2, while the capacity retention was 99 % after 1500 cycles at 0.5 A/g for coin cell.
Keyword :
Cellulose nanocrystal Cellulose nanocrystal Cellulose nanofiber Cellulose nanofiber Dendrite growth Dendrite growth Zinc-ion battery Zinc-ion battery
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| GB/T 7714 | Zhang, Han , Zhang, Meng , Xu, Ting et al. Ions and electrons dual transport channels regulated by nanocellulose for mitigating dendrite growth of zinc-ion batteries [J]. | CHEMICAL ENGINEERING JOURNAL , 2025 , 505 . |
| MLA | Zhang, Han et al. "Ions and electrons dual transport channels regulated by nanocellulose for mitigating dendrite growth of zinc-ion batteries" . | CHEMICAL ENGINEERING JOURNAL 505 (2025) . |
| APA | Zhang, Han , Zhang, Meng , Xu, Ting , Wang, Xuan , Qi, Junjie , Wang, Yaxuan et al. Ions and electrons dual transport channels regulated by nanocellulose for mitigating dendrite growth of zinc-ion batteries . | CHEMICAL ENGINEERING JOURNAL , 2025 , 505 . |
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Halide perovskite nanocrystals (PeNCs) with their exceptional light absorption and tunable bandgap, are promising candidates for solar energy harvesting and high-performance photodetectors. However, the susceptibility of PeNCs to degradation limits their widespread application. The integration of halide perovskites within metal-organic frameworks (MOFs) has recently garnered significant attention as a strategy to create composite materials. The above encapsulation enhances the stability of perovskites against environmental stressors, such as humidity, temperature, and light, leading to improved performance characteristics. This paper provides a comprehensive review of perovskite-metal-organic framework composites (PeMOFs) and their applications in photoelectric conversion. It explores the various preparation methods for PeMOFs and highlights recent advancements in the field. The review examines the specific functions of MOFs within these composite materials and summarizes recent progress in a range of applications, including photocatalysis, sensing, light-emitting diodes, perovskite solar cells, luminescent anti-counterfeiting, information security, and detection. Finally, the paper discusses potential future trends and emerging applications for PeMOFs.
Keyword :
applications applications halide perovskite nanocrystals halide perovskite nanocrystals metal-organic framework metal-organic framework properties properties
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| GB/T 7714 | Fang, Xiaochen , Xie, Zhijie , Sharshir, Swellam et al. Lead Halide Perovskite Nanocrystals in Metal-Organic Frameworks: Synthesis, Properties, and Applications [J]. | ADVANCED SCIENCE , 2025 , 12 (37) . |
| MLA | Fang, Xiaochen et al. "Lead Halide Perovskite Nanocrystals in Metal-Organic Frameworks: Synthesis, Properties, and Applications" . | ADVANCED SCIENCE 12 . 37 (2025) . |
| APA | Fang, Xiaochen , Xie, Zhijie , Sharshir, Swellam , Lei, Hanhui , Zheng, Jiaxian , Zheng, Biao et al. Lead Halide Perovskite Nanocrystals in Metal-Organic Frameworks: Synthesis, Properties, and Applications . | ADVANCED SCIENCE , 2025 , 12 (37) . |
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