自愈水凝胶
吸附
苯酚
石墨氮化碳
废水
氮化碳
亚甲蓝
降级(电信)
污染物
混合材料
化学工程
光催化
材料科学
环境科学
化学
有机化学
纳米技术
催化作用
高分子化学
计算机科学
环境工程
工程类
电信
作者
Mo Zhang,Wenjiao Luo,Zhen Wei,Wenjun Jiang,Di Liu,Yongfa Zhu
标识
DOI:10.1016/j.apcatb.2016.04.049
摘要
The separation free graphitic carbon nitride/SiO2 (C3N4/SiO2) hybrid hydrogels with three-dimensional (3D) network structures have been prepared via alkali-solution and acid-gel process. The hybrid hydrogels perform enhanced ability to absorb and in-situ degrade refractory organic pollutants, such as coking wastewater and phenol. Due to the 3D network structures of C3N4/SiO2 hybrid hydrogels, they show efficient pollutants removal ability by synergistic effect of adsorption and in-situ photocatalytic degradation. The total organic carbon content (TOC) of coking wastewater is reduced by 33% with C3N4/SiO2 hybrid hydrogel, which is 5 times of pure g-C3N4. The removal abilities of phenol and methylene blue (MB) via hybrid hydrogels are 3.1 and 6 times of pure g-C3N4 respectively. The 3D network structures guarantee C3N4/SiO2 hybrid hydrogels to be continuously used without adsorption saturation and separation from water, avoiding the photocatalysts aggregation and secondary pollution.
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