| C/Cr2O3/TiO2复合材料的制备及其光催化性能研究 |
| |
| 引用本文： | 赵黎明,张映娇,郭丽君,唐余玲,周建飞,石碧. C/Cr2O3/TiO2复合材料的制备及其光催化性能研究[J]. 化学研究与应用, 2022, 34(1): 134-140. DOI: 10.3969/j.issn.1004-1656.2022.01.017 |
| |
| 作者姓名： | 赵黎明 张映娇 郭丽君 唐余玲 周建飞 石碧 |
| |
| 作者单位： | 制革清洁技术国家工程实验室(四川大学),四川 成都 610065;制革清洁技术国家工程实验室(四川大学),四川 成都 610065;皮革化学与工程教育部重点实验室(四川大学),四川 成都 610065 |
| |
| 基金项目： | 国家重点研发计划项目(2018YFC1802201)资助;皮革化学与工程教育部重点实验室(四川大学)开放课题基金项目(SCU2021D005)资助。 |
| |
| 摘 要： | 本文以制革含铬革屑为原材料,基于矿物鞣剂复鞣的原理,将Ti(IV)均匀、稳定地负载到含铬革屑上,在氮气氛围下,经高温热解制备得到C/Cr2O3/TiO2光催化剂,并研究了其对四环素(TC)的光催化降解效果及机理。结果表明,C/Cr2O3/TiO2光催化剂具有明显的介孔结构,比表面积较大,为277.47 m2·g-1,Cr2O3和TiO2已实现复合并负载在生物炭(C)上。通过光催化降解发现,在模拟自然光照下,当催化剂用量为0.04 g,TC初始浓度为50 mg·L-1,溶液pH为2时,TC的去除率可高达99.99%。结合自由基捕获实验发现,C/Cr2O3/TiO2光催化剂对TC的降解作用主要依靠反应体系中产生的大量·O2-,·OH和h+。
|
| 关 键 词： | 含铬革屑 TiO2 光催化 四环素 |
Preparation and photocatalytic degradation property of C/Cr2O3/TiO2 composite photocatalyst |
| |
| ZHAO Li-ming,ZHANG Ying-jiao,GUO Li-jun,TANG Yu-ling,ZHOU Jian-fei,SHI Bi. Preparation and photocatalytic degradation property of C/Cr2O3/TiO2 composite photocatalyst[J]. Chemical Research and Application, 2022, 34(1): 134-140. DOI: 10.3969/j.issn.1004-1656.2022.01.017 |
| |
| Authors: | ZHAO Li-ming ZHANG Ying-jiao GUO Li-jun TANG Yu-ling ZHOU Jian-fei SHI Bi |
| |
| Affiliation: | (National Engineering Laboratory for Clean Technology of Leather Manufacture,Sichuan University,Chengdu 610065,China;The Key Laboratory of Leather Chemistry and Engineering of Ministry of Education,Sichuan University,Chengdu 610065,China) |
| |
| Abstract: | A novel C/Cr2O3/TiO2 photocatalyst was fabricated using chrome shavings as raw materials by traditional pyrolysis method under a nitrogen atmosphere,and the photocatalytic ability and mechanism of C/Cr2O3/TiO2 photocatalyst were studied using tetracycline(TC)as target pollutant.The results showed that C/Cr2O3/TiO2 photocatalyst possessed an obvious mesoporous structure and large specific surface area(277.47 m2·g-1),and both Cr2O3 and TiO2 were successfully recombined and loaded on the biochar(C)to obtain the C/Cr2O3/TiO2 photocatalyst.Under the simulated light irradiation,when the initial concentration of TC was 50 mg·L-1,the removal rate of TC could reach 99.99%with a catalyst dosage of 0.04 g,at pH of 2.Furthermore,the results of radical trapping experiments indicated that the high degradation rates of TC by C/Cr2O3/TiO2 photocatalyst mainly depended on the large amount of·O2-,·OH and h+ generated in the system. |
| |
| Keywords: | chrome shavings TiO2 photocatalytic tetracycline |
| 本文献已被 维普 万方数据 等数据库收录！ |
|
