α-Fe_(2)O_(3)@SiO_(2)@Cu_(2)O核壳结构复合物的合成及其光催化性质的研究  

Synthesis and photocatalytic properties ofα-Fe_(2)O_(3)@SiO_(2)@Cu_(2)O core-shell structure complexes

作　　者：郭小峰 刘诗语 杨磊 付宇凡 李欣欣 杨丰韩 GUO Xiaofeng;LIU Shiyu;YANG Lei;FU Yufan;LI Xinxin;YANG Fenghan(School of Materials Science and Engineering,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学材料科学与工程学院,重庆400074

出　　处：《应用化工》2024年第6期1343-1346,共4页Applied Chemical Industry

基　　金：重庆市科学技术委员会基础与前沿研究计划(cstc2014jcyjA2/30017);重庆交通大学实验教学改革与研究基金重点项目(Syj201703);大学生创新创业训练计划项目(X202010618077,S202110618005)。

摘　　要：采用水热法,以FeCl_(3)·6H_(2)O和NaH_(2)PO_(4)·2H2O为原料,制备了α-Fe_(2)O_(3)纳米颗粒,然后以TEOS作为硅源,CTAB作为造孔剂,制备α-Fe_(2)O_(3)包覆SiO_(2)的介孔材料,然后对SiO_(2)包覆的α-Fe_(2)O_(3)掺杂过渡金属Cu_(2)O,得到α-Fe_(2)O_(3)@SiO_(2)@Cu_(2)O核壳结构复合物,并且利用XRD对制备的产品进行表征,进行光催化活性的评价。结果表明,以高压汞灯为光源,亚甲基蓝浓度为15 mg/L,当催化剂用量为5 mg,90 min的降解率达到47.3%。α-Fe_(2)O_(3) Nanoparticles are prepared using FeCl_(3)·6H_(2)O and NaH_(2)PO_(4)·2H_(2)O as raw materials by hydrothermal method.α-Fe_(2)O_(3) Coated mesoporous material of SiO_(2)were synthesized using TEOS as the silicon source and CTAB as the pore forming agent,and thenα-Fe_(2)O_(3)@SiO_(2)@Cu_(2)O core-shell structure composites are prepared by combining transition metal CuO_(2) andα-Fe_(2)O_(3) coated mesoporous material of SiO_(2).Samples are characterized using XRD,and the photocatalytic activity was evaluated.The effect of photocatalytic activity on the prepared product are done using methylene blue.The results showed that degradation rate for methylene blue(15 mg/L)reached 47.3%within 90 min with a catalyst dosage of 5 mg under a high-pressure mercury lamp as the light source.

关 键 词：α-Fe_(2)O_(3)纳米材料 SiO_(2)介孔材料 过渡金属Cu_(2)O 光催化 亚甲基蓝 

分 类 号：TQ12[化学工程—无机化工]