title: Rational Design of α-Fe2O3/Reduced Graphene Oxide Composites: Rapid Detection and Effective Removal of Organic Pollutants.
abstract: α-Fe2O3/reduced graphene oxide (α-Fe2O3/rGO) composites are rationally designed and prepared to integrate organic pollutants detection and their photocatalytic degradation. Specifically, the composites are used as the substrate for surface-enhanced Raman scattering (SERS) to detect rhodamine 6G (R6G). Repeatable strong SERS signals could be obtained with R6G concentration as low as 10(-5) M. In addition, the substrate exhibits self-cleaning properties under solar irradiation. Compared with pure α-Fe2O3 and α-Fe2O3/rGO mechanical mixtures, the α-Fe2O3/rGO composites show much higher photocatalytic activity and much greater Raman enhancement factor. After 10 cycling measurements, the photodegradation rate of R6G could be maintained at 90.5%, indicating high stability of the photocatalyst. This study suggests that the α-Fe2O3/rGO composites would serve both as recyclable SERS substrate and as excellent visible light photocatalyst.
authors.affiliation: School of Physics and Materials Science, Anhui University , Hefei 230601, China.
authors.forename: Lili
authors.initials: L
authors.lastname: Zhang
authors.affiliation: School of Physics and Materials Science, Anhui University , Hefei 230601, China.
authors.forename: Zhiwei
authors.initials: Z
authors.lastname: Bao
authors.affiliation: School of Physics and Materials Science, Anhui University , Hefei 230601, China.
authors.forename: Xinxin
authors.initials: X
authors.lastname: Yu
authors.affiliation: School of Physics and Materials Science, Anhui University , Hefei 230601, China.
authors.forename: Peng
authors.initials: P
authors.lastname: Dai
authors.affiliation: School of Physics and Materials Science, Anhui University , Hefei 230601, China.
authors.forename: Jin
authors.initials: J
authors.lastname: Zhu
authors.affiliation: School of Physics and Materials Science, Anhui University , Hefei 230601, China.
authors.forename: Mingzai
authors.initials: M
authors.lastname: Wu
authors.affiliation: School of Physics and Materials Science, Anhui University , Hefei 230601, China.
authors.forename: Guang
authors.initials: G
authors.lastname: Li
authors.affiliation: School of Physics and Materials Science, Anhui University , Hefei 230601, China.
authors.forename: Xiansong
authors.initials: X
authors.lastname: Liu
authors.affiliation: School of Physics and Materials Science, Anhui University , Hefei 230601, China.
authors.forename: Zhaoqi
authors.initials: Z
authors.lastname: Sun
authors.affiliation: Department of Polymer Science and Engineering, University of Science and Technology of China , Hefei 230026, China.
authors.forename: Changle
authors.initials: C
authors.lastname: Chen
keywords: hydrothermal synthesis; photocatalytic degradation; reduced graphene oxide; surface-enhanced Raman scattering; α-Fe2O3