Fabrication of MnO2/g-C3N4 hetero-junction for hydrogen production and rhodamine B/methylene blue dye degradation

被引：20

作者：

Ahmad, Khursheed ^{[1
]}

Chaudhary, Archana ^{[2
]}

Raza, Waseem ^{[3
]}

Alsulmi, Ali ^{[4
]}

Kim, Haekyoung ^{[1
]}

机构：

[1] Yeungnam Univ, Sch Mat Sci & Engn, Gyongsan 38541, South Korea

[2] Medi Caps Univ Indore, Dept Chem, Indore 453331, Madhya Pradesh, India

[3] Univ Erlangen Nurnberg, Dept Mat Sci & Engn, WW4 LKO, Martensstr 7, D-91058 Erlangen, Germany

[4] King Saud Univ, Coll Sci, Dept Chem, Riyadh 11451, Saudi Arabia

来源：

OPTICAL MATERIALS | 2023年 / 140卷

基金：

新加坡国家研究基金会;

关键词：

MnO2/g-C3N4; heterojunctions; Z-scheme mechanism; Hydrogen evolution reaction (HER); Rhodamine B; Methyl orange; COMPOSITE; NANORODS; DRIVEN;

D O I：

10.1016/j.optmat.2023.113857

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Over the past few decades, significant progress has been made in the area of clean and renewable energy resources to cope with the rapid diminish of fossil fuels. To suffice this purpose, photocataytic hydrogen production using heterojunctions is drawing a lot of attention. For this purpose a MnO2/g-C3N4 heterojunctions has been fabricated using hydrothermal method. The fabricated sample has been characterized by PXRD, SEM and EDX analysis. The XPS analysis reveals about the presence of Mn, C, N and O elements in the sample. The bandgap for MnO2/g-C3N4 narrowed to 1.75 eV, favouring the harvesting of visible-light. In the photocatalytic H-2 evolution reaction (HER), MnO2/g-C3N4 heterojuctions exhibited promising results with 3855 mu mol g(-1) H-2 production via Z-scheme mechanism, where e(-) produced in MnO2 are accumulated in the valance band of g-C3N4, increasing the lifetime of generated e(-) and h(+). Fabricated MnO2/g-C3N4 heterojunctions have also been used for degradation of industrial dye viz. Rhodamine B (RhB) and Methyl orange (MO).

引用

页数：7