Facile synthesis of hierarchical NiO/NiFe_(2)O_(4) microsphere composite as efficient visible photocatalyst for 2,4-DCP degradation  

作　　者：Shabana Shaheen Shuai Xu Ji Bian Amir Zada Zi-Qing Zhang Yang Qu Li-Qiang Jing 

机构地区：[1]Key Laboratory of Functional Inorganic Materials Chemistry(Ministry of Education),International Joint Research Center and Lab for Catalytic Technology,School of Chemistry and Materials Science,Heilongjiang University,Harbin,150080,China [2]Department of Chemistry,Abdul Wali Khan University,Mardan,23200,Pakistan

出　　处：《Rare Metals》2024年第4期1580-1588,共9页稀有金属（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.U2102211);China Postdoctoral Science Foundation(No.2022M721069);Postdoctoral Science Foundation of Heilongjiang Province(No.LBHZ22034);the Basic Scientific Research Operating Expenses in colleges and universities of Heilongjiang Province(No.2021-KYYWF-0008)。

摘　　要：It is highly desired to develop efficient photocatalysts with recycling property for practical application to degrade toxic pollutants.Herein,nanosheet-assembled NiFe_(2)O_(4)microspheres with commendable activity are successfully synthesized by a facile solvothermal reaction with NH4F as the modifier,and their photoactivities are further improved by coupling with NiO through an in situ growth process.The optimized nickel oxide(NiO)/nickel ferrite(NiFe_(2)O_(4))microsphere composite(5NiO/NFO-4)exhibits a satisfactory photocatalytic activity for 2,4-dichlorophenol(2,4-DCP)degradation under visible-light irradiation,which is attributed to its wide visible-light response,well-designed hierarchical structure and enhanced charge transfer and separation by coupling NiO as a high-level energy platform to accept electrons.Moreover,it is found that the NiO/NiFe_(2)O_(4)microsphere photocatalysts can be easily collected and recycled owing to the distinctive magnetic properties.This work provides a feasible route to rational design visible-light-driven photocatalysts with high-activity for environmental remediation and purification with good recyclability.

关 键 词：NiFe_(2)O_(4) microspheres NiO/Fe_(2)O_(4) composite Charge separation Visible-light photocatalysis 2 4-Dichlorophenol degradation 

分 类 号：TB33[一般工业技术—材料科学与工程] O643.36[理学—物理化学]