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

共 61 条

[1] Sonochemical/hydration-dehydration synthesis of Pt-TiO2 NPs/decorated carbon nanotubes with enhanced photocatalytic hydrogen production activity [J].

Abdulrazzak, Firas H. ;

Hussein, Falah H. ;

Alkaim, Ayad F. ;

Ivanova, Irina ;

Emeline, Alexei V. ;

Bahnemann, Detlef W. .

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES, 2016, 15 (11) :1347-1357

[2] Functionalized carbon nanotubes in ZnO thin films for photoinactivation of bacteria [J].

Akhavan, O. ;

Azimirad, R. ;

Safa, S. .

MATERIALS CHEMISTRY AND PHYSICS, 2011, 130 (1-2) :598-602

[3] Lasting antibacterial activities of Ag-TiO2/Ag/a-TiO2 nanocomposite thin film photocatalysts under solar light irradiation [J].

Akhavan, O. .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2009, 336 (01) :117-124

[4] Sol-Gel-Assisted Microwave-Derived Synthesis of Anatase Ag/TiO2/GO Nanohybrids toward Efficient Visible Light Phenol Degradation [J].

Alsharaeh, E. H. ;

Bora, T. ;

Soliman, A. ;

Ahmed, Faheem ;

Bharath, G. ;

Ghoniem, M. G. ;

Abu-Salah, Khalid M. ;

Dutta, J. .

CATALYSTS, 2017, 7 (05)

[5] Effect of calcination temperatures on structures of TiO2 powders prepared by hydrothermal method using Thai leucoxene mineral [J].

Aphairaj, Deaw ;

Wirunmongkol, Thanakorn ;

Pavasupree, Sorapong ;

Limsuwan, Pichet .

9TH ECO-ENERGY AND MATERIALS SCIENCE AND ENGINEERING SYMPOSIUM, 2011, 9

[6] Emerging applications of biocompatible phytosynthesized metal/metal oxide nanoparticles in healthcare [J].

Augustine, Robin ;

Hasan, Anwarul .

JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY, 2020, 56

[7] Highly active and stable multi-walled carbon nanotubes-graphene-TiO2 nanohybrid: An efficient non-noble metal photocatalyst for water splitting [J].

Bellamkonda, Sankeerthana ;

Thangavel, Nithya ;

Hafeez, Hafeez Yusuf ;

Neppolian, B. ;

Rao, G. Ranga .

CATALYSIS TODAY, 2019, 321 :120-127

[8] Formation of oxygen vacancies and Ti3+ state in TiO2 thin film and enhanced optical properties by air plasma treatment [J].

Bharti, Bandna ;

Kumar, Santosh ;

Lee, Heung-No ;

Kumar, Rajesh .

SCIENTIFIC REPORTS, 2016, 6

[9] Rapid synthesis of recyclable and reusable magnetic TiO2@Fe3O4 for degradation of organic pollutant [J].

Bi, Yong-guang ;

Liu, Di .

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 2019, 125 (02)

[10] Engineering titania nanostructure to tune and improve its photocatalytic activity [J].

Cargnello, Matteo ;

Montini, Tiziano ;

Smolin, Sergey Y. ;

Priebe, Jacqueline B. ;

Jaen, Juan J. Delgado ;

Doan-Nguyen, Vicky V. T. ;

McKay, Ian S. ;

Schwalbe, Jay A. ;

Pohl, Marga-Martina ;

Gordon, Thomas R. ;

Lu, Yupeng ;

Baxter, Jason B. ;

Brueckner, Angelika ;

Fornasiero, Paolo ;

Murray, Christopher B. .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2016, 113 (15) :3966-3971

← 1 2 3 4 5 6 7 →