文献类型：期刊文献

英文题名：Pt Nanoparticles Supported on Ultrathin Ni(OH)2 Nanosheets for Highly Efficient Reduction of 4-Nitrophenol

作者：Cui, Jia-Lin[1];Liu, Zhong-Liang[1];Li, Hui-Hui[1];Li, Chun-Zhong[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Engn Res Ctr Hierarch Nanomat, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2023

卷号：11

期号：6

外文期刊名：INORGANICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001015255700001)】；

基金：This research was supported by the National Natural Science Foundation of China (Grants 21838003, 21771170, 20080692), Shanghai Municipal Science and Technology Major Project, Shanghai Rising-Star Program (20QA1402700), Shanghai Sailing Program (20YF1410200).

语种：英文

外文关键词：Pt/Ni(OH)(2) nanosheets; oxygen vacancy; heterogeneous catalysis; reduction of 4-nitrophenol

摘要：The synthesis of highly efficient heterogeneous catalysts with uniformly dispersed noble metal particles and a suitable size is crucial for various industrial applications. However, the high cost and rarity of noble metals limit their economic efficiency, making it essential to improve the catalytic performance with lower noble metal loading. Herein, a two-step method was developed for the synthesis of uniformly dispersed similar to 3 nm Pt nanoparticles (NPs), strongly anchored on Ni(OH)(2) nanosheets (NSs), which was proven by adequate structural characterizations. XPS analysis demonstrated that Ni(OH)(2) NSs with abundant oxygen vacancies provided sufficient anchor sites for Pt NPs and prevented their agglomeration. The catalytic performance of Pt-n/Ni(OH)(2) (n (represents the addition amount of Pt precursors during the synthesis, mu mol) = 5, 10, 15, and 20) NSs with controllable Pt loading were evaluated via the reduction of 4-nitrophenol to 4-aminophenol as a model reaction. The Pt-10/Ni(OH)(2) NSs exhibited the best activity and stability, with a reaction rate constant of 0.02358 s(-1) and negligible deterioration in ten reaction cycles. This novel synthetic method shows potentials for the synthesis of highly efficient noble-metal-supported catalysts for heterogeneous catalysis.