文献类型：期刊文献

英文题名：3-Hydroxythiophenol-Formaldehyde Resin Microspheres Modulated by Sulfhydryl Groups for Highly Efficient Photocatalytic Synthesis of H₂O₂

作者：Xu, Yulu[1];Hu, Xia[2];Chen, Yuyuan[1];Lin, Sijie[1];Wang, Chen[1];Gou, Faliang[1];Yang, Xiaogang[3];Zheng, Weiwei[4];Ma, De-Kun[1]

机构：[1]Shaoxing Univ, Zhejiang Key Lab Alternat Technol Fine Chem Proc, Shaoxing 312000, Peoples R China;[2]Shaoxing Univ, Sch Life Sci, Shaoxing 312000, Peoples R China;[3]Suzhou Univ Sci & Technol, Inst Mat Sci & Devices, Suzhou 215011, Peoples R China;[4]Syracuse Univ, Dept Chem, Syracuse, NY 13244 USA

年份：2023

外文期刊名：ADVANCED SCIENCE

收录：SCI-EXPANDED(收录号：WOS:001120843300001)、、WOS

基金：This work was supported by the National Natural Science Foundation of China (No. 52371196, 21673160, and U1604121) and startup funds of Shaoxing University. W.Z. acknowledges support from NSF CAREER(CHE-1944978) and NSF IUCRC Phase I grant (2052611)

语种：英文

外文关键词：3-hydroxythiophenol-formaldehyde resin; H2O2 production; photocatalytic oxygen reduction reaction; photocatalytic performance; sulfhydryl groups

外文摘要：Resorcinol-formaldehyde (RF) resin represents a promising visible-light responding photocatalyst for oxygen reduction reaction (ORR) toward H2O2 production. However, its photocatalytic ORR activity toward H2O2 generation is still unsatisfied for practical application. Herein, 3-hydroxythiophenol-formaldehyde (3-HTPF) resin microspheres synthesized through polycondensation reaction between 3-HTP and formaldehyde at room temperature and subsequent hydrothermal treatment exhibit enhanced photocatalytic ORR activity is reported. The experimental results show that the partial substitution of hydroxy group (& horbar;OH) by sulfhydryl one (& horbar;SH) through using 3-HTP to replace resorcinol could slow the rates of nucleation and growth of the resin particles and lead to strongly pi-stacked architecture in 3-HTPF. The introduction of & horbar;SH group can also improve adsorption ability of 3-HTPF to O-2 molecules and enhance ORR catalytic activity of the photocatalysts. Stronger built-in electric field, better adsorption ability to O-2 molecules, and increased surface catalytic activity collectively boost photocatalytic activity of 3-HTPF microspheres. As a result, H2O2 production rate of 2010 mu m h(-1) is achieved over 3-HTPF microspheres at 273 K, which is 3.4 times larger than that obtained using RF submicrospheres (591 mu m h(-1)). The rational substituent group modulation provides a new strategy for designing polymeric photocatalysts at the molecular level toward high-efficiency artificial photosynthesis.