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利用具有优化表面官能团的还原氧化石墨烯-二氧化钛对污染物进行选择性吸附和分解。

Selective adsorption and decomposition of pollutants using RGO-TiO with optimized surface functional groups.

作者信息

Sun Yunfei, He Yanfeng, Tang Bo, Wu Zhengtian, Tao Chongben, Ban Jianmin, Jiang Li, Sun Xiaohong

机构信息

College of Electronic and Information Engineering, Suzhou University of Science and Technology Suzhou Jiangsu 215009 People's Republic of China

School of Petroleum Engineering, Changzhou University Changzhou 213016 People's Republic of China

出版信息

RSC Adv. 2018 Sep 14;8(56):31996-32002. doi: 10.1039/c8ra05345f. eCollection 2018 Sep 12.

DOI:10.1039/c8ra05345f
PMID:35547525
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9085896/
Abstract

Reduced graphene oxide (RGO) samples with optimized types of surface functional groups were hybridized with TiO to achieve the selective adsorption and removal of various pollutants. A high ratio of hydroxyl groups was found to be remarkably advantageous for the adsorbtion and decomposition of rhodamine-B (and similar pollutants), while a high ratio of carboxyl groups was found to promote the ability to adsorb and decompose phenol. Moreover, the presence of carboxyl groups on the RGO edge provides a pre-condition to form a close chemical connection with TiO, which has been proven by the obtained electron paramagnetic resonance (EPR) curve, infrared spectroscopy (IR) and electron lifetime. The resulting composite photocatalysts display excellent photocatalytic activities under both UV- and visible-light illumination, indicating that the well-designed surface micro-circumstances of the RGO are quite significant.

摘要

具有优化表面官能团类型的还原氧化石墨烯（RGO）样品与TiO进行杂交，以实现对各种污染物的选择性吸附和去除。发现高比例的羟基对于罗丹明-B（及类似污染物）的吸附和分解非常有利，而高比例的羧基则促进了对苯酚的吸附和分解能力。此外，RGO边缘羧基的存在为与TiO形成紧密化学连接提供了前提条件，这已通过获得的电子顺磁共振（EPR）曲线、红外光谱（IR）和电子寿命得到证明。所得的复合光催化剂在紫外光和可见光照射下均表现出优异的光催化活性，表明精心设计的RGO表面微环境非常重要。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f6a/9085896/d6bbf00796c1/c8ra05345f-f7.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f6a/9085896/d6bbf00796c1/c8ra05345f-f7.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f6a/9085896/79860e60c405/c8ra05345f-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f6a/9085896/39c033cbdc76/c8ra05345f-f2.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/0f6a/9085896/d6bbf00796c1/c8ra05345f-f7.jpg

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