LaNiO_(3)/g-C_(3)N_(4) nanocomposite:An efficient Z-scheme photocatalyst for wastewater treatment using direct sunlight

作     者：Kalyan Ghorai Atanu Panda Akbar Hossain Monotosh Bhattacharjee Malay Chakraborty Swapan Kumar Bhattacharya Bibhutibhushan Show Abhimanyu Sarkar Parthasarathi Bera Hansang Kim Md.Motin Seikh Arup Gayen Kalyan Ghorai;Atanu Panda;Akbar Hossain;Monotosh Bhattacharjee;Malay Chakraborty;Swapan Kumar Bhattacharya;Bibhutibhushan Show;Abhimanyu Sarkar;Parthasarathi Bera;Hansang Kim;Motin Seikh;Arup Gayen

作者机构：Department of ChemistryJadavpur UniversityKolkata 700032India Department of Mechanical EngineeringGachon UniversitySungnam 13120Republic of Korea Surface Engineering DivisionCSIR-National Aerospace LaboratoriesBengaluru 560017India Department of ChemistryVisva-BharatiSantiniketan 731235India 

出 版 物：《Journal of Rare Earths》 (稀土学报（英文版）)

年 卷 期：2022年第40卷第5期

页      面：725-736,I0002页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0709[理学-地质学] 0819[工学-矿业工程] 081704[工学-应用化学] 081705[工学-工业催化] 07[理学] 08[工学] 0817[工学-化学工程与技术] 070304[理学-物理化学(含∶化学物理)] 0708[理学-地球物理学] 0703[理学-化学] 

基　　金：Project supported by the Science and Engineering Research Board(SERB) Government of India(EMR/2016/001811 EMR/2016/000083) 

主　　题：LaNiO_(3)/g-C_(3)N_(4)nanocomposite Direct Z-scheme photocatalyst Natural sunlight Reactive black 5 Methylene blue Tetracycline hydrochloride 

摘      要：The major findings in this report are(ⅰ)development of nanocomposite photocatalyst working through Z-scheme charge transfer pathway across the heterojunction,(ⅱ)utilization of direct sunlight as the photo-source,and(ⅲ)prospect of ligand-hole in photocatalysis through enhanced sub-band gap absorption,The photocatalysts,namely LaNiO_(3),g-C_(3)N_(4) and LaNiO_(3)/g-C_(3)N_(4) nanocomposites were synthesized via facile route and were characterized for their structure,morphology,microstructure,texture,elemental mapping and surface oxidation states by using several physicochemical *** photocatalytic performance of the nanocomposite was tested through the degradation of hazardous azo dye pollutants,namely reactive black 5 and methylene blue as well as the colorless antibiotic-pollutant tetracycline hydrochloride in aqueous solution in presence of natural sunlight with excellent recycling *** 10%LaNiO_(3)/g-C_(3)N_(4) nanocomposite sample shows the best catalytic activity,degrading respectively 94%,98.6%and 88.1%of reactive black 5,methylene blue and tetracycline hydrochloride in60,180 and 120 *** photocatalytic activity of the nanocomposite phase is several times superior to that of the pure *** improvements of photocatalytic activity of g-C_(3)N_(4) in the nanocomposite have been rationalized through the construction of direct Z-scheme heterojunction and suppression of electron-hole pair recombination *** enhanced photo-absorption of the nanocomposite can possibly be related to sub-bandgap absorption,which is associated to the midgap state originating from ligand-hole formation or defects in the *** photodegradation process is mediated through the formation of super oxide radical(O_(2))and hole(h^(+))as the main responsible species.