文献类型：期刊文献

英文题名：Effect of Photodeposited Noble Metal Nanoparticles on the Sacrificial-Agent-Free H2O2 Photosynthesis Performance of g-C3N4

作者：Wang, Guodan[1];Huang, Tengfei[2];Tan, Yongsheng[1];Liu, Shiyan[1];Wu, Rong[3];Fang, Zebo[1];Yang, Baocheng[2];Wei, Shunhang[1]

机构：[1]Shaoxing Univ, Zhejiang Engn Res Ctr, MEMS, Shaoxing 312000, Peoples R China;[2]Huanghe Sci & Technol Coll, Inst Nanostruct Funct Mat, Henan Prov Key Lab Nanocomposites & Applicat, Zhengzhou 450006, Peoples R China;[3]Xinjiang Univ, Sch Phys Sci & Technol, Urumqi 830000, Peoples R China

年份：2025

卷号：8

期号：12

起止页码：6125

外文期刊名：ACS APPLIED NANO MATERIALS

收录：SCI-EXPANDED(收录号：WOS:001448311200001)、、EI(收录号：20251218074077)、Scopus(收录号：2-s2.0-105001488219)、WOS

基金：This work was supported by the National Natural Science Foundation of China (grant nos. 52302291 and 22066024) and the Science and Technology Program of Shaoxing (grant no. 2022A11006).

语种：英文

外文关键词：g-C3N4; Au nanoparticles; H2O2 desorption; O-2 activation; surface plasmon resonance

外文摘要：Photodeposition of noble metal nanoparticles is one of the effective strategies to enhance the photocatalytic activity of g-C3N4, but there are few reports about its application to improve the photocatalytic production of hydrogen peroxide (H2O2) by g-C3N4. In this work, different types and surface states of noble metal (Pt, Rh, Ru, Au, and Ag) nanoparticles were loaded on the surface of g-C3N4 through photodeposition. Based on their decomposition activity to H2O2, it was found that the weak adsorption between noble metals (such as metallic Ag, metallic Au, and negatively charged Au) and H2O2 was an important factor in inhibiting H2O2 decomposition. In addition, compared with metallic Au and metallic Ag, negatively charged Au was more conducive to O-2 adsorption and activation. More importantly, besides the inhibition of carrier recombination benefiting from cocatalyst loading, the surface plasmon resonance effect of Au facilitated more electrons to participate in the reduction reaction. Thereby, the g-C3N4 loaded with negatively charged Au obtained the highest H2O2 concentration (16.98 mu M in the first hour) in the absence of sacrificial agents through a two-step single-electron O-2 reduction reaction pathway.