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Integration of Microfiltration and Visible-Light-Driven Photocatalysis on a ZnWO4 Nanoparticle/Nickel–Aluminum-Layered Double Hydroxide Membrane for Enhanced Water Purification
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-03-25 , DOI: 10.1021/acs.iecr.9b06831 Guoqing Zhao 1 , Jiao Zou 1 , Xiaoqing Chen 1 , Taiheng Zhang 1 , Jingang Yu 1 , Shu Zhou 1 , Caifeng Li 1 , Feipeng Jiao 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-03-25 , DOI: 10.1021/acs.iecr.9b06831 Guoqing Zhao 1 , Jiao Zou 1 , Xiaoqing Chen 1 , Taiheng Zhang 1 , Jingang Yu 1 , Shu Zhou 1 , Caifeng Li 1 , Feipeng Jiao 1
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Facing the increasing organic wastewater pollutants in the world, it is curious to discover novel materials for efficient wastewater separation and organic pollutants degradation. Hence, in order to solve the above problems, zinc tungstate nanoparticle/nickel–aluminum-layered double hydroxides/polyvinylidene fluoride composite photocatalytic membranes (ZnWO4/NiAl-LDH/PVDF) were constructed via vacuum filtration technology. In the following, multiple techniques were selected to characterize its physical and chemical structures. Results showed that the photocatalytic degradation performance of methylene blue was 93.97% with ZnWO4/NiAl-LDH composites and the corresponding rate constants were nearly 9.70, 2.42, and 2.06 times higher than commercial P25, NiAl-LDH, and ZnWO4 nanoparticles, respectively. After five cycles, the photocatalytic degradation rate still reached 85%. In addition, the rejection rate and water flux of ZnWO4/NiAl-LDH/PVDF membranes were 76.78% and 179.197 L·m–2·h–1 at 0.1 bar. Hence, the thoughts about ZnWO4/NiAl-LDH/PVDF membrane design can open a new insight to develop the new related photocatalysts and membrane separation techniques.
中文翻译：
ZnWO 4纳米颗粒/镍铝层状双氢氧化物膜上微滤和可见光驱动光催化的集成，以提高水的纯度
面对世界上日益增长的有机废水污染物，很好奇地发现了可有效分离废水和降解有机污染物的新型材料。因此，为了解决上述问题，通过真空过滤技术构建了钨酸锌纳米粒子/镍铝层双氢氧化物/聚偏二氟乙烯复合光催化膜（ZnWO 4 / NiAl-LDH / PVDF）。在下文中，选择了多种技术来表征其物理和化学结构。结果表明，ZnWO 4 / NiAl-LDH复合材料对亚甲基蓝的光催化降解性能为93.97％，对应的速率常数分别比市售P25，NiAl-LDH和ZnWO 4分别高9.70、2.42和2.06倍。纳米颗粒。在五个循环之后，光催化降解率仍然达到85％。另外，ZnWO 4 / NiAl-LDH / PVDF膜的截留率和水通量在0.1 bar时为76.78％和179.197 L·m –2 ·h –1。因此，有关ZnWO 4 / NiAl-LDH / PVDF膜设计的思想可以为开发新的相关光催化剂和膜分离技术开辟新的见解。
更新日期：2020-03-26
中文翻译：
ZnWO 4纳米颗粒/镍铝层状双氢氧化物膜上微滤和可见光驱动光催化的集成，以提高水的纯度
面对世界上日益增长的有机废水污染物，很好奇地发现了可有效分离废水和降解有机污染物的新型材料。因此，为了解决上述问题，通过真空过滤技术构建了钨酸锌纳米粒子/镍铝层双氢氧化物/聚偏二氟乙烯复合光催化膜（ZnWO 4 / NiAl-LDH / PVDF）。在下文中，选择了多种技术来表征其物理和化学结构。结果表明，ZnWO 4 / NiAl-LDH复合材料对亚甲基蓝的光催化降解性能为93.97％，对应的速率常数分别比市售P25，NiAl-LDH和ZnWO 4分别高9.70、2.42和2.06倍。纳米颗粒。在五个循环之后，光催化降解率仍然达到85％。另外，ZnWO 4 / NiAl-LDH / PVDF膜的截留率和水通量在0.1 bar时为76.78％和179.197 L·m –2 ·h –1。因此，有关ZnWO 4 / NiAl-LDH / PVDF膜设计的思想可以为开发新的相关光催化剂和膜分离技术开辟新的见解。
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