Photocatalytic Oxidation of 5-Hydroxymethylfurfural Over Interfacial-Enhanced Ag/TiO2 Under Visible Light Irradiation

被引：54

作者：

Zhang, Weizi ^{[1
]}

Li, Xinxin ^{[2
]}

Liu, Shaoru ^{[1
]}

Qiu, Jianhao ^{[1
]}

An, Jiahuan ^{[1
]}

Yao, Jianfeng ^{[1
]}

Zuo, Songlin ^{[1
]}

Zhang, Bo ^{[2
]}

Xia, Haian ^{[1
]}

Li, Changzhi ^{[2
]}

机构：

[1] Nanjing Forestry Univ, Jiangsu Coinnovat Ctr Efficient Proc & Utilizat F, Nanjing 210037, Peoples R China

[2] Chinese Acad Sci, Dalian Inst Chem Phys, CAS Key Lab Sci & Technol Appl Catalysis, Dalian 116023, Peoples R China

来源：

CHEMSUSCHEM | 2022年 / 15卷 / 13期

基金：

中国国家自然科学基金;

关键词：

5-hydroxymethylfurfural; biomass conversion; heterogeneous catalysis; nanoparticles; photocatalysis; METAL-SUPPORT INTERACTIONS; SELECTIVE OXIDATION; AEROBIC OXIDATION; 2,5-FURANDICARBOXYLIC ACID; CATALYSTS; AG; 2,5-DIFORMYLFURAN; ENERGY;

D O I：

10.1002/cssc.202102158

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Photocatalytic conversion of biomass-derived 5-hydroxyfurfural (HMF) to value-added 5-hydroxymethyl-2-furancarboxylic acid (HMFCA) is an environmentally friendly process. Here, Ag nanoparticle (NP) supported on TiO2 (Ag/TiO2) materials with different interfacial structures were fabricated via incipient wetness impregnation. In the photocatalytic oxidation of 5-HMF to HMFCA, low-temperature reduction (473 K) on Ag/TiO2 could improve the photoinduced charge separation efficiency and promote the reaction due to the "enhanced" localized surface plasmon resonance (LSPR) effects achieved through strong metal-support interaction (SMSI). In particular, 2.5 % Ag/TiO2-LTR exhibited superior performance with an HMFCA selectivity of up to 96.7 % under visible-light illumination. In contrast, the photocatalytic efficiency was greatly reduced when the reduction temperature increased to 773 K because of the encapsulation of Ag NPs by a thicker TiOx overlay, which significantly weakened visible-light harvesting. Overall, these findings offer an efficient methodology for designing interfacial enhanced plasmonic photocatalysts for the valorization of biomass.

引用

页数：9

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