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Title: Fabrication and efficient photocatalytic activity of porous CdS-pillared tetratitanate nanohybrid

Highlights: • Heterostructured CdS–H{sub 2}Ti{sub 4}O{sub 9} nanohybrid exhibits a wide spectral response. • The nanohybrid gave a H{sub 2} evolution rate of 895 μmol h{sup –1} g{sup –1} in water splitting. • The electronic coupling was evidenced by XPS and photocurrent results. - Abstract: Heterostructured CdS-pillared tetratitanate nanohybrid was fabricated by electrostatically driven self-assembly of the exfoliated tetratitanate nanosheets and CdS nanosol particles. It was revealed that the present nanohybrid is porous with a specific surface area of 65 m{sup 2} g{sup −1} and that the tetratitanate nanosheets were restacked in a well-ordered arrangement with a gallery height of 2.3 nm. The formation of an electronic coupling between the titanate nanosheets and the encapsulated CdS pillars was supported by XPS and photocurrent measurements. The nanohybrid exhibits a highly photocatalytic activity of 895 μmol h{sup −1} g{sup −1} in H{sub 2} evolution from water splitting under 300 W Xe lamp irradiation, which is about 11 and 7 times higher than its parents H{sub 2}Ti{sub 4}O{sub 9}·H{sub 2}O and CdS, respectively. Loading 3 wt% Pt resulted in that its activity was further improved to 1897 μmol h{sup −1} g{sup −1}. It was showed that the as-prepared nanohybrid has an excellent stabilitymore » and recurrence performance in hydrogen generation.« less
Authors:
 [1] ;  [2] ; ; ; ;  [1] ;  [1]
  1. College of Materials Science and Engineering, Huaqiao University, Xiamen 361021 (China)
  2. (China)
Publication Date:
OSTI Identifier:
22420693
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 60; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CADMIUM SULFIDES; CLATHRATES; COUPLING; INTERSTITIAL HYDROGEN GENERATION; IRRADIATION; LOADING; NANOSTRUCTURES; PHOTOCATALYSIS; POROUS MATERIALS; SPECIFIC SURFACE AREA; SPECTRAL RESPONSE; TITANATES; WATER; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY