Ni-dopant concentration effect of ZrO2 photocatalyst on photoelectrochemical water splitting and efficient removal of toxic organic pollutants
Ni-dopant concentration effect of ZrO2 photocatalyst on photoelectrochemical water splitting and efficient removal of toxic organic pollutants
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DOI：
10.1016/j.seppur.2020.117352
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发表时间：
2020-12
影响因子：
8.6
通讯作者：
C. Reddy;I. N. Reddy;K. Ravindranadh;K. R. Reddy;Dongseob Kim;J. Shim
中科院分区：
文献类型：
--
作者：
C. Reddy;I. N. Reddy;K. Ravindranadh;K. R. Reddy;Dongseob Kim;J. Shim
金属氧化物半导体光电化学(PEC)和光催化技术是近年来在环境和能源领域备受关注的一种绿色环保方法。掺杂镍的二氧化锆已经进行了很多研究，但其PEC裂水和降解有机污染物染料的研究还没有被开发出来。因此，在本研究中，我们用简单的水热法制备了镍掺杂的二氧化锆(0.1、0.3和0.5kmol%)光催化剂，并研究了其在可见光照射下的PEC水解率和对甲基(MB)蓝有机污染物染料的降解。与纯ZrO2光催化剂相比，掺镍光催化剂具有更长的光响应时间和更高的光生载流子分离率，优化后的掺杂(0.3%)光催化剂具有更高的光电流密度(~89倍)和更小的电荷电阻。此外，优化后的掺杂光催化剂在100min的可见光照射下对甲基蓝染料的降解率为90.2%。
Recent years, metal oxide semiconductor photoelectrochemical (PEC) and photocatalytic technology is a compassionate of eco-friendly methods that has displayed significant consideration in the environmental and energy fields. Ni-doped ZrO2has studied several studies but its PEC water splitting and organic pollutant dye degradation have not been exploited yet. Hence, in the present study, we prepared the Ni-doped ZrO2(0.1, 0.3 and 0.5 mol %) photocatalyst using a simple hydrothermal technique and studied their PEC water splitting and methyl (MB) blue organic pollutant dye degradation under visible light irradiation. Compared with pure ZrO2photocatalyst, the Ni-doped photocatalysts displayed extra-prolonged light response and greater separation rate of photo-generated charge carrier’s. The optimized doped (0.3 mol %) photocatalyst showed higher photocurrent (~89 times) density and lesser charge resistance over pure photocatalyst. Moreover, the optimized doped photocatalyst showed 90.2% degradation of methyl blue dye under 100 min of visible light irradiation.