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学者姓名：庄春强
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摘要 ：
Metal halide perovskites with broad optical absorption and long carrier lifetime are considered as ideal photocatalysts. However, their poor stability in water greatly impedes their application in photocatalytic H-2 evolution because they lose their crystalline structure in water. Herein, we proclaim a new class of photocatalysts: all-inorganic Cs-Cu-Cl perovskite quantum dots (QDs). It exhibits a high photocatalytic hydrogen production rate of similar to 3.1 mmol/g/h without any cocatalyst under AM 1.5-G solar irradiation (100 mW/cm(2)). Especially, it remains the high activity for up to 330 h without apparent deterioration of the hydrogen production rate. Density functional theory (DFT) calculations reveal that the Cu site works as the electron and proton absorption sites as the H-2 production active center. To our best knowledge, there is no report of metal halide perovskites as water-stable photocatalysts. This work opens an innovative way for guiding the exploration of metal halide perovskites photocatalysts for stable photocatalytic H-2 evolution.
关键词 ：
All-in-one All-in-one Single-component perovskite Single-component perovskite Quantum dot Quantum dot Water-stable Water-stable Photocatalysis Photocatalysis
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| GB/T 7714 | Li, Yuanli , Zhuang, Chunqiang , Qiu, Shi et al. Cs-Cu-Cl perovskite quantum dots for photocatalytic H2 evolution with super-high stability [J]. | APPLIED CATALYSIS B-ENVIRONMENTAL , 2023 , 337 . |
| MLA | Li, Yuanli et al. "Cs-Cu-Cl perovskite quantum dots for photocatalytic H2 evolution with super-high stability" . | APPLIED CATALYSIS B-ENVIRONMENTAL 337 (2023) . |
| APA | Li, Yuanli , Zhuang, Chunqiang , Qiu, Shi , Gao, Junfeng , Zhou, Quan , Sun, Zaicheng et al. Cs-Cu-Cl perovskite quantum dots for photocatalytic H2 evolution with super-high stability . | APPLIED CATALYSIS B-ENVIRONMENTAL , 2023 , 337 . |
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摘要 ：
The construction of photocatalytic systems with contact interfaces is one of the crucial steps toward the efficient charge separation in photocatalytic reactions. Here, in-situ growth method was utilized to simultaneously obtain ultrathin CuO and TiO2 nanosheets with contact interfaces. The H2 yield of the optimized photocatalyst is - 19.8 mmol/g, - 100 times higher than that of TiO2. In contrast, the samples prepared by physical mixing method only show an H2 yield of - 3.2 mmol/g, fully demonstrating the highly efficient charge separation in in-situ prepared samples. In-situ X-ray photoelectron spectroscopy (XPS) demonstrates the reversible variation of metal valence states and their band-edge shift. This work delivers a new perspective to observe the real-time behavior of metal valances in photocatalysts under light irradiation, which facilities to have a deep understanding of photocatalytic reactions.
关键词 ：
Variable metal valance Variable metal valance Z-scheme Z-scheme In-situ coprecipitation In-situ coprecipitation Band-edge shift Band-edge shift Photocatalytic H 2 Photocatalytic H 2
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| GB/T 7714 | Zhang, Yihong , Zhang, Can , Li, Yuanli et al. Variable metal valence states with band-edge shift over in-situ annealed CuTi-LDH nanosheets for efficient hydrogen and oxygen reduction reactions [J]. | CHEMICAL ENGINEERING JOURNAL , 2023 , 474 . |
| MLA | Zhang, Yihong et al. "Variable metal valence states with band-edge shift over in-situ annealed CuTi-LDH nanosheets for efficient hydrogen and oxygen reduction reactions" . | CHEMICAL ENGINEERING JOURNAL 474 (2023) . |
| APA | Zhang, Yihong , Zhang, Can , Li, Yuanli , Xu, Peng , Sun, Zaicheng , Zhuang, Chunqiang . Variable metal valence states with band-edge shift over in-situ annealed CuTi-LDH nanosheets for efficient hydrogen and oxygen reduction reactions . | CHEMICAL ENGINEERING JOURNAL , 2023 , 474 . |
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摘要 ：
Efficient charge separation is one of the critical issues for the design of photocatalytic systems. The physical mixing of photocatalysts and cocatalysts to prepare photocatalytic systems usually leads to a high interfacial resistance, which is not beneficial to efficient charge separation. Here, we report the in situ construction of photocatalytic systems by directly growing CdS nanosheets on porous carbon aerogels (CA) to obtain photocatalytic systems with compact interfacial contact. The photocatalytic H-2 yield of the optimized CdS@CA composite is similar to 27.3 mmol/g, obviously higher than that of CdS nanosheets (similar to 11.4 mmol/g). Electrochemical and spectroscopic methods demonstrate that the incorporation of carbon aerogels with CdS nanosheets can efficiently inhibit the recombination of photo-generated electrons and holes, thus achieving highly improved photocatalytic H-2 production.
关键词 ：
in situgrowth in situgrowth photocatalytic H-2 photocatalytic H-2 carbon aerogel carbon aerogel efficient chargeseparation efficient chargeseparation CdS nanosheet CdS nanosheet
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| GB/T 7714 | Deng, Lichun , Li, Yuanli , Zhang, Zhenghan et al. In Situ Growth of Ultrathin CdS Nanosheets on Porous Carbon Aerogels for Improved Photocatalytic H2 Production [J]. | ACS APPLIED NANO MATERIALS , 2023 , 6 (17) : 16009-16015 . |
| MLA | Deng, Lichun et al. "In Situ Growth of Ultrathin CdS Nanosheets on Porous Carbon Aerogels for Improved Photocatalytic H2 Production" . | ACS APPLIED NANO MATERIALS 6 . 17 (2023) : 16009-16015 . |
| APA | Deng, Lichun , Li, Yuanli , Zhang, Zhenghan , Zhang, Yihong , Zhong, Jiaxing , Zhang, Can et al. In Situ Growth of Ultrathin CdS Nanosheets on Porous Carbon Aerogels for Improved Photocatalytic H2 Production . | ACS APPLIED NANO MATERIALS , 2023 , 6 (17) , 16009-16015 . |
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摘要 ：
Small-sized particles are usually used as cocatalysts and anchored onto a large-sized photocatalyst for fast charge separation. However, the current problem for the design of photocatalysts is that a high loading of small-sized particles leads to full coverage of photocatalysts, resulting in the decrease of hydrogen production. Here, we propose a different way to construct photocatalytic systems. Large-scale carbon nanotubes with doped nitrogen (N-CNTs) are used to couple with TiO2 quantum dots. The H-2 yield for our optimized photocatalytic system is similar to 146 mmol/g. With further considering the light-induced thermal effect, the H-2 yield reaches up to similar to 320.6 mmol/g. Electrochemical and spectroscopic data show that large-sized N-CNTs can offer abundant active sites to realize the rapid carrier separation for tremendously improved hydrogen production.
关键词 ：
N-CNTs N-CNTs TiO2 quantum dot TiO2 quantum dot photocatalytic H-2 photocatalytic H-2 light-thermal effect light-thermal effect effective carrier separation effective carrier separation
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| GB/T 7714 | Zhang, Zhenghan , Li, Yuanli , Zhong, Jiaxing et al. N-Doped Carbon Nanofibers Coupled with TiO2 Quantum Dots for Photocatalytic Hydrogen Production [J]. | ACS APPLIED NANO MATERIALS , 2022 , 6 (1) : 453-460 . |
| MLA | Zhang, Zhenghan et al. "N-Doped Carbon Nanofibers Coupled with TiO2 Quantum Dots for Photocatalytic Hydrogen Production" . | ACS APPLIED NANO MATERIALS 6 . 1 (2022) : 453-460 . |
| APA | Zhang, Zhenghan , Li, Yuanli , Zhong, Jiaxing , Zhang, Hui , Gao, Chunlang , Zhuang, Chunqiang . N-Doped Carbon Nanofibers Coupled with TiO2 Quantum Dots for Photocatalytic Hydrogen Production . | ACS APPLIED NANO MATERIALS , 2022 , 6 (1) , 453-460 . |
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摘要 ：
Sonochemical synthesis has flourished significantly in the last few decades for the preparation of pho-tocatalysts. A large number of photocatalysts have been prepared through sonochemical techniques. This review highlights the scope of sonochemistry in the preparation of photocatalysts, and their applications in energy production and environmental remediation. Beside, the sonochemical degradation of pollutants is discussed in detail. The progress made in sonochemical synthesis and the future perspective for this technique are summarized here. This review may create more enthusiasm among researchers to pay extra attention to the sonochemical synthesis of materials and add their useful contribution to the investiga-tion of new materials for photocatalytic and other applications. This will propel this technique toward commercial sonosynthesis of nanomaterials. (c) 2022 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
关键词 ：
Photocatalysis Photocatalysis Sonochemistry Sonochemistry Energy production Energy production Environmental remediation Environmental remediation Acoustic cavitation Acoustic cavitation
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| GB/T 7714 | Qi, Kezhen , Zhuang, Chunqiang , Zhang, Manjie et al. Sonochemical synthesis of photocatalysts and their applications [J]. | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY , 2022 , 123 : 243-256 . |
| MLA | Qi, Kezhen et al. "Sonochemical synthesis of photocatalysts and their applications" . | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 123 (2022) : 243-256 . |
| APA | Qi, Kezhen , Zhuang, Chunqiang , Zhang, Manjie , Gholami, Peyman , Khataee, Alireza . Sonochemical synthesis of photocatalysts and their applications . | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY , 2022 , 123 , 243-256 . |
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摘要 ：
The common strategy for the design of photocatalytic materials is to load small-sized cocatalysts onto large-sized photocatalysts for efficient charge separation. In this study, a new design strategy is presented to anchor smallsized TiO2 photocatalysts onto large-sized Ti3C2-Mxene cocatalysts, which can provide enriched active sites to receive photo-generated electrons, thus achieving fast charge separation. Based on this strategy, the 4h-hydrogen production rate of the optimized photocatalytic system (62.5 mu mol) is 15.2 times higher than that of pure TiO2 (4.1 mu mol), strongly demonstrating the feasibility of our design strategy. The strategy here presents an effective way to design novel photocatalytic systems with superior photocatalytic properties.
关键词 ：
Photocatalytic water splitting Photocatalytic water splitting Design strategy Design strategy Large-sized cocatalyst Large-sized cocatalyst Ultra-small photocatalyst Ultra-small photocatalyst
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| GB/T 7714 | Li, Weiming , Zhuang, Chunqiang , Li, Yuanli et al. Anchoring ultra-small TiO2 & nbsp;quantum dots onto ultra-thin and large-sized Mxene nanosheets for highly efficient photocatalytic water splitting [J]. | CERAMICS INTERNATIONAL , 2021 , 47 (15) : 21769-21776 . |
| MLA | Li, Weiming et al. "Anchoring ultra-small TiO2 & nbsp;quantum dots onto ultra-thin and large-sized Mxene nanosheets for highly efficient photocatalytic water splitting" . | CERAMICS INTERNATIONAL 47 . 15 (2021) : 21769-21776 . |
| APA | Li, Weiming , Zhuang, Chunqiang , Li, Yuanli , Gao, Chunlang , Jiang, Wenshuai , Sun, Zaicheng et al. Anchoring ultra-small TiO2 & nbsp;quantum dots onto ultra-thin and large-sized Mxene nanosheets for highly efficient photocatalytic water splitting . | CERAMICS INTERNATIONAL , 2021 , 47 (15) , 21769-21776 . |
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摘要 ：
A key challenge in photocatalysts is their rapid recombination of photo-generated elec-tron-hole pairs. To decrease the recombination probability, significant studies have been devoted to increasing potential active sites of photocatalytic systems for fast charge separation. Here we demonstrate a strategy to boost active sites that is different from conventional approaches, in which large-sized Mxene nanosheets were employed as co-catalysts, while small-sized CdS nanosheets were used as photocatalysts forming effec-tive nanocomposites. Based on our designed strategy, the enrichment of transfer routes guides the fast separation of electrons from CdS nanosheets and transferred onto large-sized Mxene nanosheets. The visible-light-driven hydrogen production of our innova-tively designed composites has been improved from 2.8 mmol/g of pure CdS nanosheets to 17.5 mmol/g of the CdS@Mxene optimized composite. The obvious improvement of hydrogen production verifies the feasibility of our design strategy as a unique way to our tactic here can be extended to the design of other kinds of photocatalytic systems.
关键词 ：
Improved hydrogen evolution Improved hydrogen evolution Booming active sites Booming active sites Small-sized photocatalyst Small-sized photocatalyst Fast charge separation Fast charge separation Large-sized cocatalyst Large-sized cocatalyst
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| GB/T 7714 | Zhang, Hang , Li, Yuanli , Li, Weiming et al. Designing large-sized cocatalysts for fast charge separation towards highly efficient visible-light-driven hydrogen evolution [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2021 , 46 (56) : 28545-28553 . |
| MLA | Zhang, Hang et al. "Designing large-sized cocatalysts for fast charge separation towards highly efficient visible-light-driven hydrogen evolution" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 46 . 56 (2021) : 28545-28553 . |
| APA | Zhang, Hang , Li, Yuanli , Li, Weiming , Zhuang, Chunqiang , Gao, Chunlang , Jiang, Wenshuai et al. Designing large-sized cocatalysts for fast charge separation towards highly efficient visible-light-driven hydrogen evolution . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2021 , 46 (56) , 28545-28553 . |
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摘要 ：
Photocatalytic hydrogen production from water splitting has received considerable attention in recent years. The bottle-neck issue for hydrogen production efficiency is the relative slow charge separation and efficient hydrogen evolution. Currently, the major strategy for developing catalysts is to anchor small noble-metal cocatalysts onto relatively large photocatalysts. In this study, extremely small photocatalysts of TiO2 quantum dots were loaded onto the low-cost micro-sized cocatalysts of porous NiO/NiS2 nanosheets, promoting the rapid charge separation of photogenerated electrons from small-sized photocatalysts to large-sized cocatalysts. The size of cocatalysts is three orders of magnitude larger than that of photocatalysts. The hydrogen production of designed catalysts is similar to 16 times higher than that of pure TiO2 photocatalysts, clearly demonstrating the critical role of large-sized porous cocatalysts. Our game-changing strategy provides a distinctive approach to design new kinds of photocatalysts with rapid charge separation and highly efficient hydrogen evolution.
关键词 ：
Cocatalyst Cocatalyst Photocatalyst Photocatalyst Fast charge separation Fast charge separation Micro-sized porous nanosheet Micro-sized porous nanosheet Quantum dot Quantum dot
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| GB/T 7714 | Li, Yuanli , Gao, Chunlang , Jiang, Wenshuai et al. A game-changing design of low-cost, large-size porous cocatalysts decorated by ultra-small photocatalysts for highly efficient hydrogen evolution [J]. | APPLIED CATALYSIS B-ENVIRONMENTAL , 2021 , 286 . |
| MLA | Li, Yuanli et al. "A game-changing design of low-cost, large-size porous cocatalysts decorated by ultra-small photocatalysts for highly efficient hydrogen evolution" . | APPLIED CATALYSIS B-ENVIRONMENTAL 286 (2021) . |
| APA | Li, Yuanli , Gao, Chunlang , Jiang, Wenshuai , Zhuang, Chunqiang , Tan, Wuyuan , Li, Weiming et al. A game-changing design of low-cost, large-size porous cocatalysts decorated by ultra-small photocatalysts for highly efficient hydrogen evolution . | APPLIED CATALYSIS B-ENVIRONMENTAL , 2021 , 286 . |
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摘要 ：
CO2 transports in the Earth's interior play a crucial role in understanding the deep carbon cycle and the global climate changes. Currently, CO2 transports inside of the Earth under extreme condition of pressure and temperature have not been understood well. In this study, the molecular dynamics (MD) calculations were performed to study CO2 transports under different CO2 pressures in slit-like magnesite pores with different pore sizes at 350 similar to 2500 K and 3 similar to 50 GPa are presented. Diffusion of CO2 in magnesite was improved as the temperature increases but showed the different features as a function of pressure. The diffusion coefficients of CO2 in magnesite were found in the range of 9x10(-12) m(2) s(-1) similar to 28000x10(-12) m(2) s(-1). Magnesite with the pore size of 20 similar to 25 angstrom corresponds to the highest transports. Anisotropic diffusion of CO2 in magnesite may help to understand the inhomogeneous distribution of carbon in the upper mantle. The time of CO2 diffusion from the mantle to Earth surface was estimated to be around several tens of Ma and has an important effect on deep carbon cycle. The simulation of CO2 transports based on the Earth condition provides new insights to revealing the deep carbon cycle in the Earth's interiors.
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| GB/T 7714 | Liu, Lei , Yang, Longxing , Zhuang, Chunqiang et al. Diffusion of CO2 in Magnesite under High Pressure and High Temperature from Molecular Dynamics Simulations [J]. | GEOFLUIDS , 2021 , 2021 . |
| MLA | Liu, Lei et al. "Diffusion of CO2 in Magnesite under High Pressure and High Temperature from Molecular Dynamics Simulations" . | GEOFLUIDS 2021 (2021) . |
| APA | Liu, Lei , Yang, Longxing , Zhuang, Chunqiang , Yang, Guangshu , Yi, Li , Liu, Hong et al. Diffusion of CO2 in Magnesite under High Pressure and High Temperature from Molecular Dynamics Simulations . | GEOFLUIDS , 2021 , 2021 . |
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摘要 ：
The structural stability of high-entropy alloys (HEAs) is closely related to their mechanical properties. The precise control of the component content is a key step toward understanding their structural stability and further determining their mechanical properties. In this study, first-principle calculations were performed to investigate the effects of different contents of each component on the structural stability and mechanical properties of Co-Cr-Fe-Ni HEAs based on the supercell model. Co-Cr-Fe-Ni HEAs were constructed based on a single face-centered cubic (FCC) solid solution. Elemental components have a clear effect on their structure and performance; the Cr and Fe elements have an obvious effect on the structural stability and equilibrium lattice constant, respectively. The Ni elements have an obvious effect on stiffness. The Pugh ratios indicate that Cr and Ni addition may increase ductility, whereas Co and Fe addition may decrease it. With increasing Co and Fe contents or decreasing Cr and Ni contents, the structural stability and stiffness of Co-Cr-Fe-Ni HEAs are improved. The structural stability and mechanical properties may be related to the strength of the metallic bonding and covalent bonding inside Co-Cr-Fe-Ni HEAs, which, in turn, is determined by the change in element content. Our results provide the underlying insights needed to guide the optimization of Co-Cr-Fe-Ni HEAs with excellent mechanical properties.
关键词 ：
structural stability structural stability first principles first principles high-entropy alloys high-entropy alloys CoCrFeNi CoCrFeNi mechanical properties mechanical properties
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| GB/T 7714 | Liu, Haibo , Xin, Cunlin , Liu, Lei et al. Effects of Different Contents of Each Component on the Structural Stability and Mechanical Properties of Co-Cr-Fe-Ni High-Entropy Alloys [J]. | APPLIED SCIENCES-BASEL , 2021 , 11 (6) . |
| MLA | Liu, Haibo et al. "Effects of Different Contents of Each Component on the Structural Stability and Mechanical Properties of Co-Cr-Fe-Ni High-Entropy Alloys" . | APPLIED SCIENCES-BASEL 11 . 6 (2021) . |
| APA | Liu, Haibo , Xin, Cunlin , Liu, Lei , Zhuang, Chunqiang . Effects of Different Contents of Each Component on the Structural Stability and Mechanical Properties of Co-Cr-Fe-Ni High-Entropy Alloys . | APPLIED SCIENCES-BASEL , 2021 , 11 (6) . |
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