Graphitic Carbon Nitride Composites with MoO3-Decorated Co3O4 Nanorods as Catalysts for Oxygen and Hydrogen Evolution

被引：72

作者：

Ahmed, Imtiaz ^{[1
]}

Biswas, Rathindranath ^{[1
]}

Patil, Ranjit A. ^{[2
]}

Halder, Krishna Kamal ^{[3
]}

Singh, Harjinder ^{[1
]}

Banerjee, Biplab ^{[1
]}

Kumar, Bhupender ^{[4
]}

Ma, Yuan-Ron ^{[2
]}

Haldar, Krishna Kanta ^{[1
]}

机构：

[1] Cent Univ Punjab, Dept Chem, Bathinda 151401, India

[2] Natl Dong Hwa Univ, Dept Phys, Hualien 97401, Taiwan

[3] Univ Delhi, Kirori Mal Coll, Phys Dept, Delhi 110007, India

[4] Cent Univ Gujarat, Sch Appl Mat Sci, Gandhinagar 382030, India

来源：

ACS APPLIED NANO MATERIALS | 2021年 / 4卷 / 11期

关键词：

Co3O4/MoO3/g-C3N4; decorated; nanorods; composite; water splitting; OER; HER; OXIDE THIN-FILMS; BIFUNCTIONAL ELECTROCATALYST; RATIONAL DESIGN; GREEN APPROACH; EFFICIENT; PERFORMANCE; MOLYBDENUM; NANOPARTICLES; FABRICATION; DEPOSITION;

D O I：

10.1021/acsanm.1c03238

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We have prepared a graphitic carbon nitride (g-C3N4) composite with MoO3-decorated Co3O4 nanorods (Co3O4/MoO3/g-C3N4) via the hydrothermal approach, and this hybrid material acts as a highly active and durable electrocatalyst for water splitting reactions. This material could fundamentally influence the catalytic processes and performance of oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). The OER and HER activities of Co3O4-/MoO3-based nanorods are enhanced by blending with conducting support, for example, graphitic carbon nitrides (g-C3N4). The X-ray diffraction pattern and the attenuated total reflectance-Fourier transform infrared data revealed that the as-synthesized nanorods are highly crystalline in nature and are attached to the g-C3N4 support. Transmission electron microscopy, X-ray photoelectron spectroscopy, and Raman spectroscopy studies also affirm the successful heterointerface formation between Co3O4/MoO3 nanorods and g-C3N4. This Co3O4/MoO3/g-C3N4 rod- shaped catalyst is highly stable in comparison to its individual constituent and generates a current density of 10 mA cm(-2) at a low overpotential of 206 mV for OER and 125 mV for HER in alkaline and acidic media, respectively. This work could pave the way for developing Co3O4/MoO3/g-C3N4 composite materials as electrocatalysts for overall water splitting reactions.

引用

页码：12672 / 12681

页数：10

共 62 条

[11] g-C3N4 promoted MOF derived hollow carbon nanopolyhedra doped with high density/fraction of single Fe atoms as an ultra-high performance non-precious catalyst towards acidic ORR and PEM fuel cells [J].