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Influence of operational parameters on photocatalytic decolorization of a cationic azo dye under visible-light in aqueous Ag3PO4
Inorganic Chemistry Communications ( IF 3.8 ) Pub Date : 2020-05-01 , DOI: 10.1016/j.inoche.2020.107850
Chaosheng Zhu , Yunlin Li , Yanwu Yang , Yongxing Chen , Zhiguang Yang , Ping Wang , Wenli Feng

Abstract The Ag3PO4 nanoparticles were facilely prepared via the liquid precipitation method, and the physical property, optical properties, crystalline and morphologic properties were explored using various techniques. The XRD and SEM results show Ag3PO4 nanoparticles possessed the cubic phase structure and spheroid-like morphology with a particle size of about 300–500 nm. Spectra analysis results indicated that nanoparticles prepared had the same functional groups as Ag3PO4 and can absorb visible light with wavelengths less than 530 nm. The photocatalytic degradation of a cationic azo dye methylthionine chloride (MB) using Ag3PO4 as a photocatalyst in aqueous solution has been investigated under visible-light irradiation. The effects of different parameters on the photodegradation of MB were analyzed. During visible light photocatalytic degradation of MB in the water at different pH values by the Ag3PO4 catalyst, the process was found along with a regular dependency between the degradation rate and adsorption capacity. Both the adsorption efficiency and degradation efficiency of MB on Ag3PO4 increased with increasing initial solution pH value. Ag3PO4 nanoparticles show excellent photocatalytic activity against cationic azo dye under visible-light irradiation and are expected to be effective as a promising visible-light photocatalyst for textile-dyeing wastewater remediation.

中文翻译:

操作参数对Ag3PO4水溶液中可见光下阳离子偶氮染料光催化脱色的影响

摘要 采用液相沉淀法制备了Ag3PO4纳米颗粒,并采用多种技术对其物理性质、光学性质、结晶和形态性质进行了研究。XRD 和 SEM 结果表明 Ag3PO4 纳米颗粒具有立方相结构和类球体形态,粒径约为 300-500 nm。光谱分析结果表明,制备的纳米颗粒具有与Ag3PO4相同的官能团,可以吸收波长小于530nm的可见光。在可见光照射下研究了在水溶液中使用 Ag3PO4 作为光催化剂对阳离子偶氮染料氯化甲硫氨酸 (MB) 的光催化降解。分析了不同参数对MB光降解的影响。在 Ag3PO4 催化剂对不同 pH 值水中 MB 的可见光光催化降解过程中,发现该过程以及降解速率和吸附能力之间的规律性依赖关系。MB 在 Ag3PO4 上的吸附效率和降解效率都随着初始溶液 pH 值的增加而增加。Ag3PO4纳米粒子在可见光照射下对阳离子偶氮染料表现出优异的光催化活性,有望作为一种有前途的纺织印染废水修复的可见光光催化剂。MB 在 Ag3PO4 上的吸附效率和降解效率都随着初始溶液 pH 值的增加而增加。Ag3PO4纳米粒子在可见光照射下对阳离子偶氮染料表现出优异的光催化活性,有望作为一种有前途的纺织印染废水修复的可见光光催化剂。MB 在 Ag3PO4 上的吸附效率和降解效率都随着初始溶液 pH 值的增加而增加。Ag3PO4纳米粒子在可见光照射下对阳离子偶氮染料表现出优异的光催化活性,有望作为一种有前途的纺织印染废水修复的可见光光催化剂。
更新日期:2020-05-01
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