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.
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)
出处
《日用化学工业（中英文）》
CAS
北大核心
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)。
