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| 1 | 光催化自清洁膜的发展现状及其在厕所污水处理中的应用展望显示文摘膜技术在污水处理方面得到越来越广泛的应用,然而大多数膜材料不具备主动去除表面污染的能力而导致严重的膜污染问题。目前,通过引入光催化剂实现污染膜表面自清洁已经成为当下的研究热点。将膜技术与光催化耦合可以有效地降低膜污染,进而降低运行维护成本。基于此,文中全面介绍光催化自清洁膜的发展现状,阐述抗污染及自清洁机理,并探讨其在厕所污水处理中的潜在应用。 | 杨蕾 于振江 刘洁 张亚雷 周雪飞 | 2021 | 净水技术2021，40，3： | 1 |
| 2 | Optimized photocatalytic regeneration of adsorption-photocatalysis bifunctional composite saturated with Methyl Orange显示文摘Photo-responsive adsorption-photocatalysis nanocomposites are generally used in water and wastewater decontamination;however,the prolonged adsorption capacity of composites and the role of adsorption in concomitant photocatalysis are typically neglected.These composites can be regenerated under light irradiation as their adsorption capacity decreases.Herein,a novel adsorption-photocatalysis bifunctional nanocomposite,Bi-doped TiO2 supported on powdered activated carbon(Bi2O3/TiO2/PAC),was prepared using the solimpregnation-hydrothermal procedure.Bi2O3/TiO2/PAC with a secondary calcination temperature of 700℃under a nitrogen atmosphere was selected for maximum adsorption capacity on Methyl Orange(MO).The composite displayed an excellent adsorption capacity and was easily separated and recycled.The results demonstrate that 71.2%photocatalytic regeneration efficiency could be attained under visible light irradiation for 1 hr at an intensity of 750 W/m^2 and pH 7.Characterization of the as-prepared Bi2O3/TiO2/PAC nanocomposite(700℃)indicates that it possesses a highly specific surface area and great optical properties,showing bifunctional adsorption-photocatalysis characteristics.The p-n heterojunction of the composite played a dominant role in the photocatalytic regeneration process,and effective degradation of MO could be achieved along with composite regeneration. | Yi Shang Xing Li Yanling Yang Nan Wang Xiaoxuan Zhuang Zhiwei Zhou | 2020 | Journal of Environmental Sciences2020，32，8： | 0 |
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