锌掺杂赤铁矿的固相还原法合成及其光催化性能  

Preparation of Zn dopedα-Fe_(2)O_(3)nanoparticles by solid-phase reduction method and their photocatalytic performance

作　　者：任根宽 REN Genkuan(Key Lab of Process Analysis and Control of Sichuan Universities,Yibin 644000,China;Department of Materials and Chemical Engineering,Yibin University,Yibin 644000,China)

机构地区：[1]过程分析与控制四川省高校重点实验室,四川宜宾644000 [2]宜宾学院材料与化学工程学院,四川宜宾644000

出　　处：《印染》2025年第3期12-16,共5页China Dyeing and Finishing

基　　金：四川省科技厅重点研发项目(22YFS0461)。

摘　　要：为了提高纳米α-Fe_(2)O_(3)光催化降解效果,在α-Fe_(2)O_(3)纳米材料制备过程中加入少量的硫酸锌,合成Zn@Fe_(2)O_(3)纳米材料,并以甲基橙为目标物对纳米Zn@Fe_(2)O_(3)材料光催化性能进行评价。结果表明:固相还原法制备的纳米Zn@Fe_(2)O_(3)颗粒呈不规则的类球形结构,平均粒径约45 nm;当锌掺杂量为0.50%时,制备的Zn@Fe_(2)O_(3)纳米颗粒具有良好的催化性能,对20 mg/L甲基橙溶液光照120 min时降解率接近100%;循环5次后,甲基橙的降解率约为81.15%,具有良好的稳定性。In order to improve photocatalytic degradation property ofα-Fe_(2)O_(3)nanoparticles,a certain amount of zinc sulfate is added to synthesize Zn@Fe_(2)O_(3)nanoparticles during the preparation ofα-Fe_(2)O_(3)nanoparticles.Then,Methyl Orange(MO)is used as the target substance to evaluate photocatalytic performance of Zn@Fe_(2)O_(3)nanoparticles.The results show that Zn@Fe_(2)O_(3)nanoparticles with an average particle size of 45 nm have an irregular spherical-like structure.Zn@Fe_(2)O_(3)nanoparticles exhibit good catalytic properties when the zinc doping amount is 0.50%.After 120 min illumination,the degradation rate of MO solution with a concentration of 20 mg/L reaches 100%.After 5 cycles,its degradation rate can still reach 81.15%,indicating good photocatalytic stability.

关 键 词：光催化剂 Zn@Fe_(2)O_(3) 硫酸亚铁 甲基橙 固相还原法 

分 类 号：O644.1[理学—物理化学] O643.36[理学—化学] X703[环境科学与工程—环境工程]