Au-Pd nanoparticles immobilized on TiO2 nanosheet as an active and durable catalyst for solvent-free selective oxidation of benzyl alcohol

被引：46

作者：

Wang, Zhe ^{[1
]}

Feng, Jiangjiang ^{[1
]}

Li, Xiaoliang ^{[1
]}

Oh, Rena ^{[2
]}

Shi, Dongdong ^{[1
]}

Akdim, Ouardia ^{[3
]}

Xia, Ming ^{[4
]}

Zhao, Liang ^{[3
]}

Huang, Xiaoyang ^{[3
]}

Zhang, Guojie ^{[1
]}

机构：

[1] Taiyuan Univ Technol, State Key Lab Breeding Base Coal Sci & Technol Co, Taiyuan 030024, Shanxi, Peoples R China

[2] Seoul Natl Univ, Dept Chem, Seoul 08826, South Korea

[3] Cardiff Univ, Ctr Doctoral Training Catalysis, Sch Chem, Cardiff Catalysis Inst, Pk Pl, Cardiff CF10 3AT, Wales

[4] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2021年 / 588卷 / 588期

基金：

中国博士后科学基金;

关键词：

AuPd NPs; TiO2; Crystal facet engineering; Benzyl alcohol oxidation; Solvent-free; EXPOSED; 001; FACETS; PHOTOCATALYTIC ACTIVITY; HYDROGEN-PRODUCTION; CARBON; NANOTUBES; SURFACE; CO2; PHOTOREDUCTION; REDUCTION; DRIVEN;

D O I：

10.1016/j.jcis.2020.11.112

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

TiO2 nanocrystals with controlled facets have been extensively investigated due to their excellent photocatalytic performance in sustainable and green energy field. However, the applications in thermal catalysis without applying UV irradiation are comparably less and the identification of their intrinsic roles, especially the different catalytic behaviors of each crystal facet, remains not fully recognized. In this study, bimetallic AuPd nanoparticles supported on anatase TiO2 nanosheets exposing {001} facets or TiO2 nanospindles exposing {101} as a catalyst were prepared by sol-immobilization method and used for solvent-free benzyl alcohol oxidation. The experimental results indicated that the exposed facet of the support has a significant effect on the catalytic performance. AuPd/TiO2-001 catalyst exhibited a higher benzyl alcohol conversion than that of the AuPd/TiO2-101. Meanwhile, all the prepared AuPd/TiO2 catalysts were characterized by XRD, ICP-AES, XPS, BET, TEM, and HRTEM. The results revealed that the higher number of oxygen vacancies in TiO2 -sheets with the exposed {001} facets of higher surface energy could be responsible for the observed enhancement in the catalytic performance of benzyl alcohol oxidation. The present study displays that it is plausible to enhance the catalytic performance for the benzyl alcohol oxidation by tailoring the exposed facet of the TiO2 as a catalyst support. (C) 2020 Elsevier Inc. All rights reserved.

引用

页码：787 / 794

页数：8

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