文献类型：期刊文献

英文题名：One-pot in-situ hydrothermal synthesis of ternary In2S3/Nb2O5/Nb2C Schottky/S-scheme integrated heterojunction for efficient photocatalytic hydrogen production

作者：Tayyab, Muhammad[1];Liu, Yujie[1];Liu, Zhiguo[1];Pan, Lihan[1];Xu, Zehong[1];Yue, Wenhui[1];Zhou, Liang[2,3];Lei, Juying[2,3];Zhang, Jinlong[1]

机构：[1]East China Univ Sci & Technol, Shanghai Engn Res Ctr Multimedia Environm Catalys, Feringa Nobel Prize Scientist Joint Res Ctr,Key L, Sch Chem & Mol Engn,Joint Int Res Lab Precis Chem, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Reso, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：628

起止页码：500

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：;EI(收录号：20223512629108);WOS:【SCI-EXPANDED(收录号:WOS:000860432800008)】；

基金：This study was supported by National Key R&D Program of China (SQ2019YFE011329) , National Natural Science Foundation of China (22006038, 21972040) , the Program of Introducing Talents of Discipline to Universities (B20031) , Innovation Program of Shanghai Municipal Education Commission (2021-01-07-00-02-E00106) , the Science and Technology Commission of Shanghai Municipality (20DZ2250400) , the China Postdoctoral Science Foundation (2020M681209) and Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Hydrogen evolution; Non-noble metal; MXene-derived photocatalyst; In-situ synthesis; S-scheme heterojunction

摘要：MXene-derived photocatalysts continue to fascinate the research community in developing photo-driven green and sustainable fuel production. However, the efficiency of MXene-derived photocatalyst is still low due to the wide bandgap and high recombination rate of photo-excited charge carriers. Here, we have synthesized the Nb2C MXene-derived ternary photocatalyst via one-pot in-situ hydrothermal method for photocatalytic hydrogen (H-2) evolution. The partial oxidation of Nb2C MXene into Nb2O5 nanorods and coupling with In2S3 nanoparticles via in-situ chemical anchoring were the key factors toward high effi-ciency and long-term stability during photocatalytic H-2 evolution. The optimized ternary photocatalyst composite manifested the highest H-2 evolution efficiency at 68.8 lmol g(-1) h(-1), which was 11 and 7.5 times higher than the Nb2O5/Nb2C (NNC) and pure In2S3 photocatalyst, respectively. Moreover, the pho-tocatalytic stability of the optimized ternary photocatalyst composite was analyzed for five consecutive cycles, and above 87% activity retention was observed even after the fifth cycle without any obvious decline. The separation efficiency of photoexcited charge carriers could be attributed to the synergic effect of the In2S3/Nb2O5 heterojunction and the redox reactions at different sites of the composite. More importantly, the participation of Schottky junction and S-scheme heterojunction charge transfer for the obtained novel ternary photocatalyst was evaluated via ultraviolet photoelectron spectroscopy (UPS) and electron paramagnetic resonance (EPR). This research will provide additional insight into the extended potential of MXene-derived ternary photocatalysts towards efficient H-2 production to meet future global energy demands. (C) 2022 Elsevier Inc. All rights reserved.