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学者姓名：孙再成
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摘要 ：
It is a challenging task to overcomes the bottleneck of N2 adsorption and activation in N2 reduction reaction (NRR). Regulating the catalyst surface electronic state is treated as a potential strategy to prevail over the barrier. Here, Incorporating Fe as a dopant in the TiO2 nanoparticles can generate oxygen vacancies and dopant energy levels, promoting the adsorption and activation of N2 molecules. F surface modification induces Fe (III) in the high spin state and upshifts the dopant energy level. That facilitates Fe 3d electrons backdonation to N 1ag* orbital promotes the activation of N2 molecule and reduces the limiting potential of NRR. Therefore, F-Fe: TiO2 electrocatalyst achieved the highest Faradaic efficiency and maximum NH3 production rate of 27.67% and 27.86 mu g h-1 mgcat. -1 at -0.5 V v.s. reversible hydrogen electrode. This work provides deep insights into the design surface electronic state of catalyst toward efficient N2 to NH3 conversion.
关键词 ：
Electrocatalysis Electrocatalysis Iron doping Iron doping N-2 Fixation N-2 Fixation Surface electronic state manipulation Surface electronic state manipulation Surface fluorine treatment Surface fluorine treatment
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| GB/T 7714 | Song, Guangxin , Gao, Rui , Zhao, Zhao et al. High-spin state Fe(III) doped TiO2 for electrocatalytic nitrogen fixation induced by surface F modification [J]. | APPLIED CATALYSIS B-ENVIRONMENTAL , 2022 , 301 . |
| MLA | Song, Guangxin et al. "High-spin state Fe(III) doped TiO2 for electrocatalytic nitrogen fixation induced by surface F modification" . | APPLIED CATALYSIS B-ENVIRONMENTAL 301 (2022) . |
| APA | Song, Guangxin , Gao, Rui , Zhao, Zhao , Zhang, Yujun , Tan, Huaqiao , Li, Haibo et al. High-spin state Fe(III) doped TiO2 for electrocatalytic nitrogen fixation induced by surface F modification . | APPLIED CATALYSIS B-ENVIRONMENTAL , 2022 , 301 . |
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摘要 ：
The nitrogen cycle plays an important role in nature, but N-containing products cannot meet human needs. The electrochemical synthesis of ammonia under ambient conditions has attracted the interest of many researchers because it provides a clean and pollution-free synthesis method; however, it has certain difficulties, including a high activation energy, multiple electron transfer, and hydrogenation. Thermodynamic factors limit the selectivity and activity of ammonia synthesis techniques. This review summarizes progress in the electrochemical synthesis of ammonia from theory and experiment. Theoretically, the reduction of nitrogen molecules is analyzed using orbit theory and the thermodynamic reaction pathways. Experimentally, we first discuss the effect of the experimental setup on the nitrogen reduction reaction, and then the four critical of catalysts, including size, electronic, coordination, and orientation effects. These issues must be considered to produce highly-efficient catalysts for electrochemical nitrogen reduction (eNRR). This review provides an overview of the eNRR to enable future researchers to design rational catalysts. © 2021 Science Press
关键词 ：
Activation energy Activation energy Ammonia Ammonia Coordination reactions Coordination reactions Electrocatalysts Electrocatalysts Electrolytic reduction Electrolytic reduction Nitrogen Nitrogen Nitrogen fixation Nitrogen fixation
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| GB/T 7714 | Niu, Lijuan , An, Li , Wang, Xiayan et al. Effect on electrochemical reduction of nitrogen to ammonia under ambient conditions: Challenges and opportunities for chemical fuels [J]. | Journal of Energy Chemistry , 2021 , 61 : 304-318 . |
| MLA | Niu, Lijuan et al. "Effect on electrochemical reduction of nitrogen to ammonia under ambient conditions: Challenges and opportunities for chemical fuels" . | Journal of Energy Chemistry 61 (2021) : 304-318 . |
| APA | Niu, Lijuan , An, Li , Wang, Xiayan , Sun, Zaicheng . Effect on electrochemical reduction of nitrogen to ammonia under ambient conditions: Challenges and opportunities for chemical fuels . | Journal of Energy Chemistry , 2021 , 61 , 304-318 . |
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摘要 ：
Carbon dots (Cdots) has been proved to possess the catalytic decomposition of H2O2 in the photocatalytic system. It is a potential photo-Fenton catalyst. Since multiple emissive Cdots have different light response range. There is rarely investigation on the performance of Cdots based photo-Fenton on the light wavelength. Herein, blue, green and red emissive carbon dots were synthesized from the different ratio of o-phenylenediamine and catechol by the solvothermal method. They exhibit different light adsorption range from UV to visible light. Furthermore, the photo-Fenton reactivity of Cdots was studied for catalyzing the decomposition of H2O2 to generate free hydroxyl radicals and consequently applying for the removal of methyl blue. The results exhibit that Cdots with the broader light adsorption rang possess the stronger catalytic activity for the photo-Fenton reaction. The H2O2 decomposition rate of red emissive Cdots is 0.074 min(-1), which is 2.64 and 1.46 times than the blue and green emissive Cdots, respectively. And the radical detection results confirm that the photo-Fenton happens in the reaction. In addition, the Cdots photo-Fenton can be carried out in the broad pH range from acidic to basic solution, which has a great potential to treat wastewater in the neutral system. (C) 2021 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
关键词 ：
Carbon dot Carbon dot H2O2 H2O2 Photo-Fenton reaction Photo-Fenton reaction Visible light Visible light Wastewater treatment Wastewater treatment
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| GB/T 7714 | Yang, Dongxue , Qu, Dan , An, Li et al. A metal-free carbon dots for wastewater treatment by visible light active photo-Fenton-like reaction in the broad pH range [J]. | CHINESE CHEMICAL LETTERS , 2021 , 32 (7) : 2292-2296 . |
| MLA | Yang, Dongxue et al. "A metal-free carbon dots for wastewater treatment by visible light active photo-Fenton-like reaction in the broad pH range" . | CHINESE CHEMICAL LETTERS 32 . 7 (2021) : 2292-2296 . |
| APA | Yang, Dongxue , Qu, Dan , An, Li , Zong, Xupeng , Sun, Zaicheng . A metal-free carbon dots for wastewater treatment by visible light active photo-Fenton-like reaction in the broad pH range . | CHINESE CHEMICAL LETTERS , 2021 , 32 (7) , 2292-2296 . |
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摘要 ：
碳点合成原料来源广泛,发光性能可调,生物相容性良好,在生物成像、离子检测、发光材料等领域具有巨大的应用潜力.本文综述了碳点的制备方法、发光原理以及应用,重点介绍了碳点的制备方法,总结了近年来碳点在催化、生物成像等领域的最新进展;指出未来研究中需要进一步对碳点的合成进行优化,深入探究碳点的发光机理;制备发光波长可调、尺寸可调的碳点,对其在发光器件、生物成像、传感等领域的应用具有重要意义.
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| GB/T 7714 | 张震 , 曲丹 , 安丽 et al. 荧光碳点的制备、发光机理及应用 [J]. | 发光学报 , 2021 , 42 (8) : 1125-1140 . |
| MLA | 张震 et al. "荧光碳点的制备、发光机理及应用" . | 发光学报 42 . 8 (2021) : 1125-1140 . |
| APA | 张震 , 曲丹 , 安丽 , 汪夏燕 , 孙再成 . 荧光碳点的制备、发光机理及应用 . | 发光学报 , 2021 , 42 (8) , 1125-1140 . |
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摘要 ：
Transition metal alloys and their compounds have been drafted as relatively economic and high-activity non-noble metal electrocatalysts for the oxygen reduction reaction (ORR). However, the stability of catalysts is regarded as a critical issue for practical application. Here, we report CoNi alloy nanoparticles embedded in a nitrogen-doped graphite carbon nanotube (CoNi@N-GCNT-FD) electrocatalyst, which is synthesized from metal precursors and dicyandiamide nanofibers formed by freeze-drying pretreatment. The electrocatalyst exhibits remarkable ORR performance (a positive onset potential at 0.90 V vs reversible hydrogen electrode (RHE), a half-wave potential at 0.84 V vs RHE, and a high limiting current density (6.4 mA cm(-2))) in an alkaline medium. The outstanding ORR catalytic behavior is attributable to the properties with a high specific surface area and the collaborative influence between a CoNi alloy and a nanotube protective layer. The CoNi@N-GCNT-FD also displays antimethanol toxicity and good stability over 10,000 cycles, attributed to the unique structure of N-GCNT that is more conducive to mass transfer and protects the alloy particles from corrosion under harsh conditions. This simple route can be widely used to prepare other alloy electrocatalysts with relatively economic value and high performance in power conversion and stockpile device fields.
关键词 ：
CoNi alloy CoNi alloy electrocatalyst electrocatalyst N-doped graphite carbon nanotubes N-doped graphite carbon nanotubes nonprecious metal catalysts nonprecious metal catalysts oxygen reduction reaction oxygen reduction reaction
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| GB/T 7714 | Niu, Lijuan , Liu, Guohua , Li, Yifan et al. CoNi Alloy Nanoparticles Encapsulated in N-Doped Graphite Carbon Nanotubes as an Efficient Electrocatalyst for Oxygen Reduction Reaction in an Alkaline Medium [J]. | ACS SUSTAINABLE CHEMISTRY & ENGINEERING , 2021 , 9 (24) : 8207-8213 . |
| MLA | Niu, Lijuan et al. "CoNi Alloy Nanoparticles Encapsulated in N-Doped Graphite Carbon Nanotubes as an Efficient Electrocatalyst for Oxygen Reduction Reaction in an Alkaline Medium" . | ACS SUSTAINABLE CHEMISTRY & ENGINEERING 9 . 24 (2021) : 8207-8213 . |
| APA | Niu, Lijuan , Liu, Guohua , Li, Yifan , An, Jiawen , Zhao, Boyuan , Yang, Jingsu et al. CoNi Alloy Nanoparticles Encapsulated in N-Doped Graphite Carbon Nanotubes as an Efficient Electrocatalyst for Oxygen Reduction Reaction in an Alkaline Medium . | ACS SUSTAINABLE CHEMISTRY & ENGINEERING , 2021 , 9 (24) , 8207-8213 . |
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摘要 ：
Solar water evaporation is a sustainable and efficient way to produce fresh water. Identifying highly efficient photothermal materials is an important step for achieving high evaporation rates. However, the effects of the water interfacial area are rarely paid any attention, although a few reports have demonstrated high evaporation rates from micro-/nanostructured devices. In this work, we introduce a new term, water mass per unit surface area (WMUA), to connect the water mass and interfacial area. We can regulate WMUA using different commercial porous materials to realize water management in devices, which further affects the evaporation rates. The optimized device is composed of suedette sponge, filter paper, and polydopamine as the water-transportation, water-restrictive, and photothermal materials, respectively, and it achieves an evaporation rate of 1.8 kg m−2h−1and energy efficiency of ∼92%. This presents a new strategy for the rational design of device structures and the promotion of evaporation rates, pushing this field into new areas. © The Royal Society of Chemistry 2021.
关键词 ：
Energy efficiency Energy efficiency Evaporation Evaporation Materials handling Materials handling Oceanography Oceanography Porous materials Porous materials Water management Water management
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| GB/T 7714 | Sun, Yukun , Zong, Xupeng , Qu, Dan et al. Water management by hierarchical structures for highly efficient solar water evaporation [J]. | Journal of Materials Chemistry A , 2021 , 9 (11) : 7122-7128 . |
| MLA | Sun, Yukun et al. "Water management by hierarchical structures for highly efficient solar water evaporation" . | Journal of Materials Chemistry A 9 . 11 (2021) : 7122-7128 . |
| APA | Sun, Yukun , Zong, Xupeng , Qu, Dan , Chen, Ge , An, Li , Wang, Xiayan et al. Water management by hierarchical structures for highly efficient solar water evaporation . | Journal of Materials Chemistry A , 2021 , 9 (11) , 7122-7128 . |
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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 ：
Design strategy Design strategy Large-sized cocatalyst Large-sized cocatalyst Photocatalytic water splitting Photocatalytic water splitting 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 ：
Highly active and efficient photocatalysts are crucial for the exploration of ammonia synthesis because of the serious problem of energy deficiency. La2TiO5 (LTO) perovskite materials have great advantages in the field of photocatalytic nitrogen fixation because of the broadly diversified properties. The rational design of surface defect is a valid method to modulate photoinduced charge traps and create defect energy levels, especially it is an effective way to suppress the photoinduced charge recombination. Herein, LTO was obtained by a simple sol-gel method and was further reduced by NaBH4 to introduce oxygen defect on its surface. UV-vis spectra proved that the surface defects could reduce the band gap value of samples, which is beneficial for improving photocatalytic nitrogen fixation activity. For the best photocatalytic samples with good cycle stability, the nitrogen fixation rate is 158.13 mu mol.g(-1).h(-1). The mechanism of photocatalytic nitrogen fixation was proposed by the PL, XPS, and PEC results, which provided possibilities for exploring more promising perovskite catalysts in the field of nitrogen fixation. (C) 2021 Elsevier Inc. All rights reserved.
关键词 ：
La2TiO5 La2TiO5 Nitrogen fixation Nitrogen fixation Photocatalysis Photocatalysis Surface modification Surface modification
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| GB/T 7714 | Song, Muyao , Wang, Lijing , Li, Jiaxin et al. Defect density modulation of La2TiO5: An effective method to suppress electron-hole recombination and improve photocatalytic nitrogen fixation [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2021 , 602 : 748-755 . |
| MLA | Song, Muyao et al. "Defect density modulation of La2TiO5: An effective method to suppress electron-hole recombination and improve photocatalytic nitrogen fixation" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 602 (2021) : 748-755 . |
| APA | Song, Muyao , Wang, Lijing , Li, Jiaxin , Sun, Dewu , Guan, Renquan , Zhai, Hongju et al. Defect density modulation of La2TiO5: An effective method to suppress electron-hole recombination and improve photocatalytic nitrogen fixation . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2021 , 602 , 748-755 . |
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摘要 ：
A photocatalyst system is generally comprises a catalyst and cocatalyst to achieve light absorption, electron-hole separation, and surface reaction. It is a challenge to develop a single photocatalyst having all functions so as to lower the efficiency loss. Herein, the active GaN4 site is integrated into a polymeric carbon nitride (CN) photocatalyst (GCN), which displays an excellent H2 production rate of 9904 μmol h-1 g-1 . It is 162 and 3.3 times higher than that of CN with the absence (61 μmol h-1 g-1 ) and presence (2981 μmol h-1 g-1 ), respectively, of 1.0 wt % Pt. Under light irradiation the electron is injected and stored at the GaN4 site, where the LUMO locates. The HOMO distributes on the aromatic ring resulting in spatial charge separation. Transient photovoltage discloses the electron-storage capability of GCN. The negative GaN4 promotes proton adsorption in the excited state. The positive adsorption energy drives H2 desorption from GaN4 after passing the electron to the proton. This work opens up opportunities for exploring a novel catalyst for H2 production.
关键词 ：
carbon nitride carbon nitride gallium gallium hydrogen hydrogen photocatalysis photocatalysis structure elucidation structure elucidation
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| GB/T 7714 | Jiang Wenshuai , Zhao Yajie , Zong Xupeng et al. Photocatalyst for High-Performance H2 Production: Ga-Doped Polymeric Carbon Nitride. [J]. | Angewandte Chemie , 2021 , 60 (11) : 6124-6129 . |
| MLA | Jiang Wenshuai et al. "Photocatalyst for High-Performance H2 Production: Ga-Doped Polymeric Carbon Nitride." . | Angewandte Chemie 60 . 11 (2021) : 6124-6129 . |
| APA | Jiang Wenshuai , Zhao Yajie , Zong Xupeng , Nie Haodong , Niu Lijuan , An Li et al. Photocatalyst for High-Performance H2 Production: Ga-Doped Polymeric Carbon Nitride. . | Angewandte Chemie , 2021 , 60 (11) , 6124-6129 . |
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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 ：
Booming active sites Booming active sites Fast charge separation Fast charge separation Improved hydrogen evolution Improved hydrogen evolution Large-sized cocatalyst Large-sized cocatalyst Small-sized photocatalyst Small-sized photocatalyst
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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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