Photocatalytic hydrogen production by ternary heterojunction composites of silver nanoparticles doped FCNT-TiO2

被引：34

作者：

Reddy, N. Ramesh ^{[1
]}

Bharagav, U. ^{[2
]}

Shankar, M. V. ^{[2
]}

Reddy, P. Mohan ^{[1
]}

Reddy, Kakarla Raghava ^{[3
]}

Shetti, Nagaraj P. ^{[4
]}

Alonso-Marroquin, Fernando ^{[5
]}

Kumari, M. Mamatha ^{[2
]}

Aminabhavi, Tejraj M. ^{[6
]}

Joo, Sang Woo ^{[1
]}

机构：

[1] Yeungnam Univ, Sch Mech & IT Engn, Gyongsan 38541, South Korea

[2] Yogi Vemana Univ, Dept Mat Sci &Nanotechnol, Nanocatalysis & Solar Fuels Res Lab, Kadapa 516005, Andhra Pradesh, India

[3] Univ Sydney, Sch Chem & Biomol Engn, Sydney, NSW 2006, Australia

[4] KLE Inst Technol, Dept Chem, Ctr Electrochem Sci Mat, Hubballi 580030, Karnataka, India

[5] Univ Sydney, Sch Civil Engn, Sydney, NSW 2006, Australia

[6] Soniya Coll Pharm, Dharwad 580002, Karnataka, India

来源：

JOURNAL OF ENVIRONMENTAL MANAGEMENT | 2021年 / 286卷

基金：

新加坡国家研究基金会;

关键词：

TiO2; nanoparticles; Silver nanoparticles; CNTs; Chemical reduction; Photocatalysis; Hydrogen production; CARBON NANOTUBES; TIO2; NANOTUBES; THIN-FILMS; WATER; NANOSHEETS; NANOCOMPOSITE; NANOCRYSTALS; DEGRADATION; FABRICATION; NANORODS;

D O I：

10.1016/j.jenvman.2021.112130

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Silver nanoparticles doped with FCNT-TiO2 heterogeneous catalyst was prepared via one-step chemical reduction process and their efficacy was tested for hydrogen production under solar simulator. Crystallinity, purity, optical properties, and morphologies of the catalysts were examined by X-Ray diffraction, Raman spectroscopy, UV-Visible diffuse reflectance spectra, and Transmission Electron Microscopy. The chemical states and interface interactions were studied by X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy. The optimized catalyst showed 19.2 mmol g(-1)h(-)(1) of hydrogen production, which is 28.5 and 7 times higher than the pristine TiO2 nanoparticles and FCNT-TiO2 nanocomposite, respectively. The optimized catalyst showed stability up to 50 h under the solar simulator irradiation. The natural solar light irradiated catalyst showed similar to 2.2 times higher hydrogen production rate than the solar simulator irradiation. A plausible reaction mechanism of Ag NPs/ FCNT-TiO2 photocatalyst was elucidated by investigating the beneficial co-catalytic role of Ag NPs and FCNTs for enhanced hydrogen production.

引用

页数：10

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