Vertically-heterostructured TiO2-Ag-rGO ternary nanocomposite constructed with {001} facetted TiO2 nanosheets for enhanced Pt-free hydrogen production

Zhouyou Wang, Ze Xian Low, Xiangkang Zeng, Bin Su, Yichun Yin, Chenghua Sun, Tim Williams, Huanting Wang, Xiwang Zhang

Research output: Contribution to journalArticleResearchpeer-review

Abstract

TiO2 nanosheets with high ratio of {001} facets were coupled with reduced graphene oxide (rGO) nanosheets through the link of silver (Ag) nanoparticles, forming a novel ternary nanocomposite photocatalyst with a vertical heterostructure, TiO2-Ag-rGO. The vertical anchoring of TiO2-Ag nanosheets between rGO sheets was confirmed by transmission electron microscopy (TEM), Raman spectroscopy, energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). Due to excellent separation of electron-hole pairs in the TiO2 nanosheets, enhanced electron transfer to rGO via Ag nanoparticles, the TiO2-Ag-rGO nanocomposite exhibited an outstanding performance in photocatalytic hydrogen production, with a hydrogen production rate of 593.56 μmol g−1 h−1. This study provides new insights to the development of Pt-free photocatalysts for hydrogen production.

Original languageEnglish
Pages (from-to)1508-1515
Number of pages8
JournalInternational Journal of Hydrogen Energy
Volume43
Issue number3
DOIs
Publication statusPublished - 18 Jan 2018

Keywords

  • Hydrogen production
  • Ternary nanocomposite
  • Vertically-heterostructured TiO-Ag-rGO
  • {001} facets

Cite this

@article{c0bf7cafaffc466e8ed41b26600ee0fc,
title = "Vertically-heterostructured TiO2-Ag-rGO ternary nanocomposite constructed with {001} facetted TiO2 nanosheets for enhanced Pt-free hydrogen production",
abstract = "TiO2 nanosheets with high ratio of {001} facets were coupled with reduced graphene oxide (rGO) nanosheets through the link of silver (Ag) nanoparticles, forming a novel ternary nanocomposite photocatalyst with a vertical heterostructure, TiO2-Ag-rGO. The vertical anchoring of TiO2-Ag nanosheets between rGO sheets was confirmed by transmission electron microscopy (TEM), Raman spectroscopy, energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). Due to excellent separation of electron-hole pairs in the TiO2 nanosheets, enhanced electron transfer to rGO via Ag nanoparticles, the TiO2-Ag-rGO nanocomposite exhibited an outstanding performance in photocatalytic hydrogen production, with a hydrogen production rate of 593.56 μmol g−1 h−1. This study provides new insights to the development of Pt-free photocatalysts for hydrogen production.",
keywords = "Hydrogen production, Ternary nanocomposite, Vertically-heterostructured TiO-Ag-rGO, {001} facets",
author = "Zhouyou Wang and Low, {Ze Xian} and Xiangkang Zeng and Bin Su and Yichun Yin and Chenghua Sun and Tim Williams and Huanting Wang and Xiwang Zhang",
year = "2018",
month = "1",
day = "18",
doi = "10.1016/j.ijhydene.2017.11.053",
language = "English",
volume = "43",
pages = "1508--1515",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "Elsevier",
number = "3",

}

Vertically-heterostructured TiO2-Ag-rGO ternary nanocomposite constructed with {001} facetted TiO2 nanosheets for enhanced Pt-free hydrogen production. / Wang, Zhouyou; Low, Ze Xian; Zeng, Xiangkang; Su, Bin; Yin, Yichun; Sun, Chenghua; Williams, Tim; Wang, Huanting; Zhang, Xiwang.

In: International Journal of Hydrogen Energy, Vol. 43, No. 3, 18.01.2018, p. 1508-1515.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Vertically-heterostructured TiO2-Ag-rGO ternary nanocomposite constructed with {001} facetted TiO2 nanosheets for enhanced Pt-free hydrogen production

AU - Wang, Zhouyou

AU - Low, Ze Xian

AU - Zeng, Xiangkang

AU - Su, Bin

AU - Yin, Yichun

AU - Sun, Chenghua

AU - Williams, Tim

AU - Wang, Huanting

AU - Zhang, Xiwang

PY - 2018/1/18

Y1 - 2018/1/18

N2 - TiO2 nanosheets with high ratio of {001} facets were coupled with reduced graphene oxide (rGO) nanosheets through the link of silver (Ag) nanoparticles, forming a novel ternary nanocomposite photocatalyst with a vertical heterostructure, TiO2-Ag-rGO. The vertical anchoring of TiO2-Ag nanosheets between rGO sheets was confirmed by transmission electron microscopy (TEM), Raman spectroscopy, energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). Due to excellent separation of electron-hole pairs in the TiO2 nanosheets, enhanced electron transfer to rGO via Ag nanoparticles, the TiO2-Ag-rGO nanocomposite exhibited an outstanding performance in photocatalytic hydrogen production, with a hydrogen production rate of 593.56 μmol g−1 h−1. This study provides new insights to the development of Pt-free photocatalysts for hydrogen production.

AB - TiO2 nanosheets with high ratio of {001} facets were coupled with reduced graphene oxide (rGO) nanosheets through the link of silver (Ag) nanoparticles, forming a novel ternary nanocomposite photocatalyst with a vertical heterostructure, TiO2-Ag-rGO. The vertical anchoring of TiO2-Ag nanosheets between rGO sheets was confirmed by transmission electron microscopy (TEM), Raman spectroscopy, energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS). Due to excellent separation of electron-hole pairs in the TiO2 nanosheets, enhanced electron transfer to rGO via Ag nanoparticles, the TiO2-Ag-rGO nanocomposite exhibited an outstanding performance in photocatalytic hydrogen production, with a hydrogen production rate of 593.56 μmol g−1 h−1. This study provides new insights to the development of Pt-free photocatalysts for hydrogen production.

KW - Hydrogen production

KW - Ternary nanocomposite

KW - Vertically-heterostructured TiO-Ag-rGO

KW - {001} facets

UR - http://www.scopus.com/inward/record.url?scp=85038814045&partnerID=8YFLogxK

U2 - 10.1016/j.ijhydene.2017.11.053

DO - 10.1016/j.ijhydene.2017.11.053

M3 - Article

VL - 43

SP - 1508

EP - 1515

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 3

ER -