Modification of g-C3N4 with hydroxyethyl cellulose as solid proton donor via hydrogen bond to enhance H2O2 production

被引：66

作者：

Zhang, Pengyan ^{[1
]}

Zhang, Jing ^{[1
]}

Wang, Dandan ^{[1
]}

Zhang, Fan ^{[1
]}

Zhao, Yuting ^{[1
]}

Yan, Mengqin ^{[1
]}

Zheng, Chuanrong ^{[1
]}

Wang, Qinqin ^{[1
]}

Long, Mingce ^{[2
]}

Chen, Chao ^{[1
,3
]}

机构：

[1] East China Normal Univ, Sch Ecol & Environm Sci, Shanghai Key Lab Urban Ecol Proc & Ecorestorat, 500 N Dongchuan Rd, Shanghai 200241, Peoples R China

[2] Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Key Lab Thin Film & Microfabricat Technol, Minist Educ, 800 Dongchuan Rd, Shanghai 200240, Peoples R China

[3] Inst Eco Chongming IEC, 3663 N Zhongshan Rd, Shanghai 200062, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY | 2022年 / 318卷

基金：

中国国家自然科学基金;

关键词：

Graphitic carbon nitride; Hydroxyethyl cellulose; Hydrogen peroxide; Intermolecular hydrogen bond; Solid proton donor; GRAPHITIC CARBON NITRIDE; PHOTOCATALYTIC PERFORMANCE; CHARGE SEPARATION; OXYGEN REDUCTION; BASIS-SETS; NITROGEN; PEROXIDE; IRRADIATION; COMPOSITES; ABSORPTION;

D O I：

10.1016/j.apcatb.2022.121749

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：

Hydroxyethyl cellulose (HEC) is used as a solid proton donor to modify graphitic carbon nitride (g-C3N4 ) via non -covalent bonds to improve H2O2 production performance. The modified g-C3N4 (CN/HEC) is prepared by stirring the suspension of g-C3N4 and HEC at room temperature and drying. The H2O2 production efficiency of CN/HEC is 3.89 times that of g-C3N4 . Both experimental results and density functional theory calculations (DFT) suggest charge transfer from HEC to g-C3N4 and hydrogen bond formation between HEC and g-C3N4 . CN/HEC possesses higher charge separation efficiency than g-C3N4 . Stability test, XPS, FTIR, and DFT analyses suggest that HEC acts as a proton donor. The synergy of charge separation enhancer and proton donor from HEC promotes the sequential two-step single-electron O2 reduction for H2O2 production. This study explores a way to utilize cellulose material as solid proton donors to modify g-C3N4 via hydrogen bonds under mild conditions for increased H2O2 production performance.

引用

页数：9

共 60 条

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