NiS/MoS2 Mott-Schottky heterojunction-induced local charge redistribution for high-efficiency urea-assisted energy-saving hydrogen production
文献类型：期刊论文
| 作者 | Gu, Chengjun1; Zhou, Guangyao2; Yang, Jun3,4; Pang, Huan5; Zhang, Mingyi6,7; Zhao, Qun8; Gu, Xuefang8; Tian, Shu8; Zhang, Jubing1; Xu, Lin1 |
| 刊名 | CHEMICAL ENGINEERING JOURNAL
 |
| 出版日期 | 2022-09-01 |
| 卷号 | 443页码:9 |
| 关键词 | Mott-Schottky electrocatalyst Electronic structure engineering Hydrogen evolution reaction Urea oxidation reaction |
| ISSN号 | 1385-8947 |
| DOI | 10.1016/j.cej.2022.136321 |
| 英文摘要 | Urea-assisted water electrolysis possesses the prospective prospect for high-efficiency hydrogen production by replacing oxygen evolution reaction (OER) with thermodynamically more favorable urea oxidation reaction (UOR). Modulating the electronic structure of electrocatalysts through constructing metal-semiconductor heteminterface represents an effective strategy to promote the electrochemical performances. Herein, we construct a Mott-Schottky bifunctional electrocatalyst by in-situ growth of NiS/MoS2 hetero-nanoflowers on the conductive carbon cloth (CC) substrate (abbreviated as NiS/MoS2@CC hereafter) for both hydrogen evolution reaction (HER) and urea oxidation reaction (UOR). Thanks to the Mott-Schottky effect, the self-driven charge transfer occurs across the NiS/MoS2 heterointerfaces, which results in the built-in electric field, the accelerated charge transfer rate, and the modified chemisorption free energies for reaction intermediates, ultimately expediting the dissociation of water and urea molecules. Consequently, the as-fabricated NiS/MoS2@CC electrode only requires an overpotential of 87 mV for hydrogen evolution reaction (HER) in 1.0 M KOH and a potential of 1.36 V for UOR in 1.0 M KOH solution with 0.5 M urea to attain a current density of 10 mA cm(-2), respectively. Moreover, when served as the free-standing anode and cathode simultaneously, the NiS/MoS2@CC-assembled urea electrolyzer requires a cell voltage of 1.46 V at 10 mA cm(-2), which is 200 mV smaller than that of the pure water splitting counterpart. This study may deepen the understanding of electronic modulation via Mott-Schottky establishment. |
| WOS关键词 | ALKALINE ; ELECTROCATALYSTS ; MOS2/NI3S2 ; NANOSHEETS ; HYDROXIDE ; GRAPHENE ; CATALYST ; SULFIDE |
| 资助项目 | National Natural Science Foundation of China[21972068] ; National Natural Science Foundation of China[21875112] ; National Natural Science Foundation of China[22075290] ; National Natural Science Foundation of China[51806110] ; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences[MPCS-2021-A-05] ; High-level Talents Project of Jinling Institute of Technology[jit-b-202164] |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000901231500003 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Natural Science Foundation of China ; State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences ; High-level Talents Project of Jinling Institute of Technology |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/56153]  |
| 专题 | 中国科学院过程工程研究所 |
| 通讯作者 | Zhou, Guangyao; Zhang, Jubing; Xu, Lin |
| 作者单位 | 1.Nanjing Normal Univ, Sch Energy & Mech Engn, Sch Chem & Mat Sci, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Nanjing 210023, Peoples R China 2.Jinling Inst Technol, Coll Sci, Nanjing 211169, Peoples R China 3.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 4.Nanjing IPE Inst Green Mfg Ind, Nanjing 211100, Peoples R China 5.Yangzhou Univ, Sch Chem & Chem Engn, Yangzhou 225009, Jiangsu, Peoples R China 6.Harbin Normal Univ, Sch Phys & Elect Engn, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Harbin 150025, Peoples R China 7.Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China 8.Nantong Univ, Coll Chem & Chem Engn, Nantong 226019, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gu, Chengjun,Zhou, Guangyao,Yang, Jun,et al. NiS/MoS2 Mott-Schottky heterojunction-induced local charge redistribution for high-efficiency urea-assisted energy-saving hydrogen production[J]. CHEMICAL ENGINEERING JOURNAL,2022,443:9. |
| APA | Gu, Chengjun.,Zhou, Guangyao.,Yang, Jun.,Pang, Huan.,Zhang, Mingyi.,...&Tang, Yawen.(2022).NiS/MoS2 Mott-Schottky heterojunction-induced local charge redistribution for high-efficiency urea-assisted energy-saving hydrogen production.CHEMICAL ENGINEERING JOURNAL,443,9. |
| MLA | Gu, Chengjun,et al."NiS/MoS2 Mott-Schottky heterojunction-induced local charge redistribution for high-efficiency urea-assisted energy-saving hydrogen production".CHEMICAL ENGINEERING JOURNAL 443(2022):9. |
入库方式： OAI收割
来源：过程工程研究所
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