Ce-TiO_(2)-RGO催化剂的制备及在印染废水处理中的应用研究  

Preparation of Ce-TiO_(2)-RGO catalyst and its application in the treatment of printing and dyeing wastewater

作　　者：朱宝 潘艳 Bao Zhu;Yan Pan(School of Traditional Chinese Medicine,Jiangsu College of Nursing,Huai’an,Jiangsu 223003,China;Department of Science and Education,Lianshui People’s Hospital Affiliated to Jiangsu College of Nursing,Huai’an,Jiangsu 223400,China)

机构地区：[1]江苏护理职业学院中医药学院,江苏淮安223003 [2]江苏护理职业学院附属涟水县人民医院科教科,江苏淮安223400

出　　处：《日用化学工业（中英文）》2024年第12期1465-1472,共8页China Surfactant Detergent & Cosmetics

基　　金：2023江苏省高校哲学社会科学研究一般项目(2023SJYB1955);淮安市2022年度自然科学研究联合专项项目(HABL202264)。

摘　　要：以溶胶-凝胶法和超声复合法制备了Ce-TiO_(2)-RGO复合光催化剂,研究了Ce掺杂质量分数对光催化剂降解纺织印染废水性能的影响。通过XRD、SEM、TEM、UV-vis、PL对复合光催化剂进行了表征。研究结果表明:Ce-TiO_(2)颗粒均匀吸附在GO表面,Ce-TiO_(2)的粒径约25~110 nm。Ce的掺杂后使TiO_(2)-RGO复合光催化剂的吸收带边发生了红移,禁带宽度减小。随着Ce掺杂质量分数的增大,Ce-TiO_(2)-RGO复合光催化剂的PL强度先降低后轻微增大,6%Ce-TiO_(2)-RGO复合光催化剂在410和470 nm的发射峰强度最低。以纺织印染废水为降解对象,在180 min时,6%Ce-TiO_(2)-RGO对COD的去除率达到最大值82.21%,降解后COD值为88.95 mg/L,符合废水排放标准。在180 min时,6%Ce-TiO_(2)-RGO对纺织印染废水的降解率达到了最大值99.21%。Ce-TiO_(2)-RGO复合光催化剂在染色纺织废水的处理方面表现出巨大的应用潜力。Ce-TiO_(2)-RGO composite photocatalyst was prepared by sol-gel method and ultrasonic treatment.The effect of Ce doping mass fraction on the degradation of textile printing and dyeing wastewater was studied.The catalysts were characterized by XRD,SEM,TEM,UV-vis and PL.The results showed that,Ce-TiO_(2)particles uniformly adsorbed on the GO surface,and the particle diameter of Ce-TiO_(2)was approximately 25-110 nm.After Ce doping,the absorption band edge of TiO_(2)-RGO composite photocatalyst was redshifted and the band gap was reduced.With the increase of Ce doping mass fraction,the PL intensity of Ce-TiO_(2)-RGO composite photocatalyst first decreased and then slightly increased,and the emission peak intensity of 6%Ce-TiO_(2)-RGO composite photocatalyst was the lowest at 410 nm and 470 nm.Taking textile printing and dyeing wastewater as the research object of degradation,the COD removal rate of 6%Ce-TiO_(2)-RGO reached the maximum of 82.21%at 180 min,and the COD value after degradation was 88.95 mg/L which was in line with the wastewater discharge standard.On the other hand,at 180 min,the degradation rate for textile printing and dyeing wastewater by 6%Ce-TiO_(2)-RGO also reached the maximum(99.21%).Therefore,the Ce-TiO_(2)-RGO composite photocatalyst showed great application potential in the treatment of textile dyeing wastewater.

关 键 词：溶胶-凝胶法 纺织印染废水 Ce-TiO_(2)-RGO 光催化 光谱性能 

分 类 号：X791[环境科学与工程—环境工程]