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用于光降解聚丙烯酰胺的SiO@TiO:Eu@TiO核壳双微球的制备

Preparation of SiO@TiO:Eu@TiO core double-shell microspheres for photodegradation of polyacrylamide.

作者信息

Zou Haoyang, Wang Lan, Tao Huaizhi, Liu Yi, Chang Meiqi, Yao Shiyu

机构信息

State Key Laboratory of Supramolecular Structure and Materials, Jilin University Changchun 130012 P. R. China

Research Institute of Drilling and Production Engineering Technology, CNPC Chuanqing Drilling Engineering Co., Ltd Guanghan 618300 P. R. China.

出版信息

RSC Adv. 2019 Sep 30;9(53):30790-30796. doi: 10.1039/c9ra06187h. eCollection 2019 Sep 26.

DOI:10.1039/c9ra06187h
PMID:35529367
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9072158/
Abstract

Recently, polyacrylamide (PAM) has been widely used in polymer flooding technology to enhance oil recovery and oil production. However, the difficulty in removing hydrolysed PAM (HPAM) from wastewater still seriously blocks the further application of polymer flooding in the oilfields. Herein, we demonstrate the preparation of SiO@TiO:Eu@TiO core double-shell microspheres (STT) through a two-step solvothermal and sol-gel coating strategy. The as-prepared STT exhibits an ideal photocatalytic activity for the photodegradation of HPAM. More importantly, by using STT as the model, the correlation between fluorescence intensity and photocatalytic activity of the photocatalysts is investigated. The results suggest their oppositional relationship. Since many kinds of photocatalysts are utilized in the degradation of organic pollutants, it is believed that our work will not only promote the development of photocatalysis in the field of oil extraction, but also offer a convenient method for evaluating the photocatalytic activity of the photocatalysts.

摘要

近年来，聚丙烯酰胺（PAM）已广泛应用于聚合物驱油技术中，以提高原油采收率和产量。然而，从废水中去除水解聚丙烯酰胺（HPAM）的困难仍然严重阻碍了聚合物驱在油田中的进一步应用。在此，我们展示了通过两步溶剂热和溶胶-凝胶包覆策略制备SiO@TiO:Eu@TiO核-双壳微球（STT）。所制备的STT对HPAM的光降解表现出理想的光催化活性。更重要的是，以STT为模型，研究了光催化剂的荧光强度与光催化活性之间的相关性。结果表明它们呈对立关系。由于多种光催化剂被用于有机污染物的降解，我们相信我们的工作不仅将促进光催化在采油领域的发展，而且还将提供一种评估光催化剂光催化活性的便捷方法。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de6e/9072158/5894748c866e/c9ra06187h-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de6e/9072158/a543e18c7418/c9ra06187h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de6e/9072158/8d678e8f7b7a/c9ra06187h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de6e/9072158/c8b87b3b8b2d/c9ra06187h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de6e/9072158/2939a526ad33/c9ra06187h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de6e/9072158/5894748c866e/c9ra06187h-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de6e/9072158/a543e18c7418/c9ra06187h-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de6e/9072158/8d678e8f7b7a/c9ra06187h-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de6e/9072158/c8b87b3b8b2d/c9ra06187h-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de6e/9072158/2939a526ad33/c9ra06187h-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/de6e/9072158/5894748c866e/c9ra06187h-s1.jpg

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