title: New photocatalyst based on graphene oxide/chitin for degradation of dyes under sunlight.
abstract: Sunlight photocatalyst was fabricated by in situ synthesis of Cu2O in the regenerated chitin (RC)/graphene oxide (GO) composite film, where the porous chitin film was used as the microreactor for the formation of nano Cu2O. Nano Cu2O was immobilized and evenly distributed in the matrix and Cu2O tended to grow on the GO sheets. Cu2O inside the matrix excite and generate free photoelectrons and electron holes, which was responsible for the degradation of dyes, while GO transferred the yielded photoelectrons to prevent the generation of local high potential zone and induce the chain degradation at more points. So it was found that the porous chitin film could load Cu2O and graphene at the same time, controlling the size of Cu2O and leading to easy recycle and reuse of the photocatalyst. Moreover, the introduction of GO has dramatically improved the photocatalytic activity of Cu2O in the Cu2O/GO/RC film, showing great potential application in wastewater treatment utilizing solar energy.
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China; Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China.
authors: Yuntao
authors: Y
authors: Wang
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China; Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China.
authors: Yaqiong
authors: Y
authors: Pei
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China; Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China.
authors: Wenfei
authors: W
authors: Xiong
authors: Provincial-Level Experimental and Teaching Demonstration Center of Chemical Materials & Engineering, Chizhou University, Anhui Chizhou 247100, People's Republic of China.
authors: Tingguo
authors: T
authors: Liu
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China; Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China.
authors: Jing
authors: J
authors: Li
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China; Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China.
authors: Shilin
authors: S
authors: Liu
authors: College of Food Science and Technology, Huazhong Agricultural University, Wuhan 430070, Hubei, China; Key Laboratory of Environment Correlative Dietology (Huazhong Agricultural University), Ministry of Education, China; Hubei Collaborative Innovation Centre for Industrial Fermentation, Hubei University of Technology, Wuhan 430068, China. Electronic address: libinfood@mail.hzau.edu.cn.
authors: Bin
authors: B
authors: Li
mesh_terms: D002384:Catalysis; D002686:Chitin / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry*; D003300:Copper / Q000737:chemistry; D006108:Graphite / Q000737:chemistry*; D008027:Light; D053761:Nanocomposites / Q000737:chemistry / Q000648:ultrastructure; D010087:Oxides / Q000737:chemistry*; D055668:Photochemical Processes; D014961:X-Ray Diffraction
chemical_list: D004396:Coloring Agents; D010087:Oxides; D002686:Chitin; D006108:Graphite; D003300:Copper; C000520:cuprous oxide
keywords: Chitin; Cu(2)O; Graphene oxide; Methyl orange; Photocatalysis