A novel Fe/HNT visible light-driven heterogeneous photocatalyst:Development as a semiconductor and photocatalytic application  

作　　者：Gizem Basaran Dindas Derya Y.Koseoglu-Imer Huseyin Cengiz Yatmaz 

机构地区：[1]Gebze Technical University,Environmental Engineering Department,41400,Gebze,Kocaeli,Turkey [2]Istanbul Technical University,Environmental Engineering Department,34469,Maslak,Istanbul,Turkey

出　　处：《Progress in Natural Science:Materials International》2022年第3期273-281,共9页自然科学进展·国际材料（英文版）

摘　　要：Fe/HNT(Iron/Halloysite-nanotube)heterogeneous semiconductor catalysts operating effectively under visible light were developed by using FeCl3,FeSO4 and Fe(OH)3 sludge precipitated after electro-Fenton process and named as Fe/HNT-I,Fe/HNT-II and Fe/HNT-III,respectively.Chemical configuration and particle morphology of the catalysts were characterized with XRD,SEM-EDS and UV–vis DRS.Effect of the developed Fe/HNT photocatalysts was investigated for the degradation of Reactive Orange 16(RO16)textile dye under visible light.The photocatalytic decolorization of RO16 was 95.6%,99.3%and 96.6%,respectively.It was found that the photocatalytic performance of Fe/HNT-III catalyst under visible light was effective compared to Fe/HNT-I and Fe/HNTII.The iron ratio in the catalyst's structure(Fe:HNT ratio 0.25,0.5 and 0.75(w/w))and pH value(4,7 and 9)in production phase were also changed to investigate the photocatalytic effect of Fe/HNT-III.An Fe:HNT ratio of 0.25 and a pH of 4 were determined as the optimum conditions for catalyst production.Optimum H_(2)O_(2) dosage value was also investigated for photocatalytic oxidation process and determined to be 10 mM.Finally,the optimum conditions were further used for the degradation of Terbinafine hydrochloride(TerHCl)active drug and the treatment of wastewater from the textile and pharmaceutical industries.

关 键 词：Halloysite nanoclay Fe/HNT nanoparticle Catalyst SEMICONDUCTOR Photocatalytic degradation Visible light 

分 类 号：O643.36[理学—物理化学] O644.1[理学—化学]