title: Nanostructured 3D-porous graphene hydrogel based Ti/Sb-SnO2-Gr electrode with enhanced electrocatalytic activity.
abstract: Nanostructured highly porous 3D-Ti/Sb-SnO2-Gr electrode, based on 3D porous graphene hydrogel was fabricated via a fast-evaporation technique through layer by layer (LBL) deposition. The 3D pores are uniformly distributed on the high fidelity of substrate with pore sizes of 7-12 nm, as confirmed by SEM analysis. Compared to Ti/Sb-SnO2electrode, the fabricated 3D porous electrode possesses high oxygen evolution potential (2.40 V), smaller charge transfer resistance (29.40 Ω cm-2), higher porosity (0.90), enhanced roughness factor (181), and larger voltammetric charge value (57.4 mC cm-2). Electrocatalytic oxidation of Rhodamine B (RhB) was employed to evaluate the efficiency of the fabricated 3D-Ti/Sb-SnO2-Gr anode. The results show that the electrochemical reaction follows pseudo first order kinetics with rate constant (k) value of 4.93 × 10-2min-1, which is about 3.91 times higher compared to flat Ti/Sb-SnO2. The fabricated electrode demonstrates better stability and low specific energy consumption signifying its potential usage in electrocatalysis.
authors.affiliation: Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi, 830011, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
authors.forename: Sumreen
authors.initials: S
authors.lastname: Asim
authors.affiliation: Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi, 830011, China. Electronic address: zhuyq@ms.xjb.ac.cn.
authors.forename: Yunqing
authors.initials: Y
authors.lastname: Zhu
authors.affiliation: Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi, 830011, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
authors.forename: Masud
authors.initials: M
authors.lastname: Rana
authors.affiliation: Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi, 830011, China.
authors.forename: Jiao
authors.initials: J
authors.lastname: Yin
authors.affiliation: Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi, 830011, China; University of Chinese Academy of Sciences, Beijing, 100049, China.
authors.forename: Muhammad Wajid
authors.initials: MW
authors.lastname: Shah
authors.affiliation: Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi, 830011, China.
authors.forename: Yingxuan
authors.initials: Y
authors.lastname: Li
authors.affiliation: Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences, Urumqi, 830011, China. Electronic address: cywang@ms.xjb.ac.cn.
authors.forename: Chuanyi
authors.initials: C
authors.lastname: Wang
mesh_terms: D000965:Antimony / Q000737:chemistry; D002384:Catalysis; D055664:Electrochemical Techniques / Q000379:methods*; D004566:Electrodes; D006108:Graphite / Q000737:chemistry*; D020100:Hydrogels / Q000737:chemistry*; D007700:Kinetics; D049329:Nanostructures / Q000737:chemistry*; D010084:Oxidation-Reduction; D016062:Porosity; D012235:Rhodamines / Q000032:analysis / Q000737:chemistry; D013499:Surface Properties; D017971:Tin Compounds / Q000737:chemistry; D014025:Titanium / Q000737:chemistry; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry; D018508:Water Purification / Q000379:methods*
chemical_list: D020100:Hydrogels; D012235:Rhodamines; D017971:Tin Compounds; D014874:Water Pollutants, Chemical; D006108:Graphite; D000965:Antimony; D014025:Titanium; C029773:rhodamine B; C045358:stannic oxide
keywords: 3D-porous anode; Charge transfer; Electrocatalysis; Graphene hydrogel