Graphene-wrapped Ag3PO4/LaCO3OH heterostructures for water purification under visible light

作     者：Santosh S.Patil Mukund G.Mali Animesh Roy Mohaseen S.Tamboli Virendrakumar G.Deonikar Deepak R.Patil Milind V.Kulkarni Salem S.Al-Deyab Sam S.Yoon Sanjay S.Kolekar Bharat B.Kale 

作者机构：Centre for Materials for Electronics Technology(C-MET)Departnent of Electronics and Information Technology(DeitY)Govt.of IndiaPuneIndia Analytical Chemistry and Material Science LaboratoryDepartment of ChemitryShivaji UniversityKolhapurMS India Solar Cell■Aerosol Science LaboratorySchool of Mech.EngKorea UniversitySeoulSouth Korea and School of Chemical SciencesSolapur UniversitySolapurMSIndia Petrochemical Research ChairDepartment of ChemistryKing Saud UniversityRiyadhSaudi Arabia 

出 版 物：《Journal of Energy Chemistry》 (能源化学（英文版）)

年 卷 期：2016年第25卷第5期

页      面：845-853页

核心收录：

学科分类：081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

基　　金：Department of Electronics and Information Technology (Deit Y, New Delhi) for financial support UGC-SAP, DST-FIST Department of Chemistry, Shivaji University Kolhapur supported by the Commercialization Promotion Agency for R&D Outcomes (COMPA) funded by the Ministry of Science, ICT and Future Planning (MISP) and NRF-2013R1A2A2A05005589 

主　　题：Ag3PO4 LaCO3OH Graphene Heterostructures Photocatalytic MB degradation Co-catalyst 

摘      要：We demonstrated a unique synthesis approach of graphene（GR）-wrapped AgPO/LaCOOH（APO/LCO）heterostructures by an in-situ wet chemical method. FESEM analysis reveals the formation of rhombic dodecahedrons of APO decorated with LCO and later wrapped with GR flakes. Optical studies shows two absorption edges corresponding to the band gap energies of APO（2.41 eV） and LCO（4.1 eV）. Considering the absorption edge of the heterostructures in the visible region, the photocatalytic activities of photocatalysts containing different APO/LCO mass ratios were evaluated by the degradation of MB. GR-decorated composite with 20% LCO（APO/LCO20/GR） exhibited the highest photocatalytic activity for MB degradation, with a rate constant, k of 0.541 min. The photocatalytic activity of APO/LCO20/GR more greatly enhanced than those of the individual constituents（APO, LCO, APO/LCO20）. The enhanced photocatalytic activity of the heterostructure can be attributed to the co-catalytic effect of LCO as well as intriguing physicochemical properties of GR. To understand the enhanced photocatalytic activity of the heterostructures the photocatalytic reaction mechanism is proposed in detail. The recyclability of the APO/LCO/GR composite photocatalyst is further evaluated by reusing the catalyst in replicate photocatalytic experiments which shows consistent photocatalytic activity thereby confirms the stability and reusability of heterostructure photocatalyst.