Potassium Tantalate K6Ta10.8O30 with Tungsten Bronze Structure and Its Photocatalytic Property
Potassium Tantalate K6Ta10.8O30 with Tungsten Bronze Structure and Its Photocatalytic Property
复制标题
钨青铜结构钽酸钾K6Ta10.8O30及其光催化性能
DOI：
10.1002/cjoc.201600642
复制
发表时间：
2017-02-01
影响因子：
5.4
通讯作者：
Zhang, Gaoke
中科院分区：
文献类型：
--
作者：
Wang, Junting;Xiao, Chun;Zhang, Gaoke
钨青铜结构钽酸盐光催化剂具有可调的、灵活的物化性质，是一种值得研究的光催化剂。本论文采用一种简单的固相反应路线，成功地合成了一种新型的钨青铜结构钽酸钾K6Ta_（10. 8）O_（30）。通过XRD和SEM分析研究了煅烧时间对样品的物相组成、形貌和结晶度的影响。此外，通过紫外光照射下降解ARG染料评价了样品的光催化活性。结果表明，K6Ta_（10. 8）O_（30）对ARG的光催化降解表现出较高的活性，ARG的光催化降解符合一级动力学。结合钨青铜结构特征和清除剂实验结果，提出了K6Ta10.8O30光催化剂的可能光催化机理。该研究为钽酸盐光催化剂的研究提供了新的思路。
With the tunable and flexible physicochemical properties, tantalate photocatalysts with tungsten bronze structure are worth being studied. In this work, we successfully synthesized a novel potassium tantalate K6Ta10.8O30 with tungsten bronze structure using a facile solid-state reaction route. The effects of calcination time on the phase composition, morphology and crystallinity of the obtained samples were studied by XRD and SEM analyses. In addition, the photocatalytic activity of the samples was evaluated by the degradation of ARG dye under UV light irradiation. The results indicated that the K6Ta10.8O30 showed high photocatalytic activity for degradation of ARG and the photocatalytic degradation of ARG followed the first order kinetics. Furthermore, the possible photocatalytic mechanism of the K6Ta10.8O30 photocatalyst was proposed based on tungsten bronze structure feature and the scavengers experimental results. This study would give a new insight into tantalate photocatalysts.