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Author Zhang, Yaping ♦ Liu, Hong ♦ Zhang, Guohua ♦ He, Liwen ♦ Liu, Peide ♦ Lin, Bizhou
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword 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
Abstract 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 stability and recurrence performance in hydrogen generation.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2014-12-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 60


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