NDLI: Influence of heat treatment on thermally-reduced graphene oxide/TiO$_{2}$ composites for photocatalytic applications

Content Provider	Springer Nature Link
Author	Nguyen Phan, Thuy Duong Pham, Viet Hung Yun, Hyunran Kim, Eui Jung Hur, Seung Hyun Chung, Jin Suk Shin, Eun Woo
Copyright Year	2011
Abstract	Thermally-reduced graphene oxide/TiO$_{2}$ composites (TRGO/Ti) were prepared by the thermal reduction of graphene oxide/TiO$_{2}$ composite that was obtained from a simple, environmentally friendly, one-step colloidal blending method. The changes in structural and textural properties as well as their corresponding photocatalytic activities were investigated as a function of calcination temperature. The presence of stacked TRGO sheets significantly retarded both the aggregation and the crystalline phase transformation of TiO$_{2}$ as increasing the temperature from 200 to 600 °C. TRGO/Ti composites exhibited higher photocatalytic activity for the degradation of methylene blue in comparison with pure TiO$_{2}$ due to the increase in specific surface area and the formation of π-π conjugations between dye compounds and aromatic regions of TRGO. However, increasing the calcination temperature resulted in the lower photoactivity and slower kinetics, which can be ascribed to the decrease in surface area, the reduction of oxygen vacancies, and the loss of functional groups at the edges or on the basal planes of the TRGO sheets.
Starting Page	2236
Ending Page	2241
Page Count	6
File Format	PDF
ISSN	02561115
Journal	Korean Journal of Chemical Engineering
Volume Number	28
Issue Number	12
e-ISSN	19757220
Language	English
Publisher	Springer US
Publisher Date	2011-09-13
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	TiO$_{2}$ Reduced Graphene Oxide Nanocomposites Dye Photocatalytic Degradation Porous Materials Materials Science Biotechnology Catalysis Industrial Chemistry/Chemical Engineering
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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