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首页> 外文期刊>Ultrasonics sonochemistry >Sonophotocatalytic degradation of trypan blue and vesuvine dyes in the presence of blue light active photocatalyst of Ag3PO4/Bi2S3-HKUST-1-MOF: Central composite optimization and synergistic effect study
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Sonophotocatalytic degradation of trypan blue and vesuvine dyes in the presence of blue light active photocatalyst of Ag3PO4/Bi2S3-HKUST-1-MOF: Central composite optimization and synergistic effect study

机译：Ag3PO4 / Bi2S3-HKUST-1-MOF的蓝光活性光催化剂存在下声光降解锥虫蓝和海藻染料的研究：中心复合优化和协同效应研究

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摘要

An efficient simultaneous sonophotocatalytic degradation of trypan blue (TB) and vesuvine (VS) using Ag3PO4/Bi2S3-HKUST-1-MOF as a novel visible light active photocatalyst was carried out successfully in a continuous flow-loop reactor equipped to blue LED light. Ag3PO4/Bi2S3-HKUST-1-MOF with activation ability under blue light illumination was synthesized and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray (EDX), photoluminescence (PL) and diffuse reflectance spectra (DRS). The effect of operational parameters such as the initial TB and VS concentration (5-45 mg/L), flow rate (30-110 mL/min), irradiation and sonication time (10-30 min), pH (3-11) and photocatalyst dosage (0.15-0.35 g/L) has been investigated and optimized using central composite design (CCD) combined with desirability function (DF). Maximum sonophotodegradation percentage (98.44% and 99.36% for TB and VS, respectively) was found at optimum condition set as: 25 mg/L of each dye, 70 mL/min of solution flow rate, 25 min of irradiation and sonication time, pH 6 and 0.25 g/L of photocatalyst dosage. At optimum conditions, synergistic index value was obtained 2.53 that indicated the hybrid systems including ultrasound irradiation and photocatalysis have higher efficiency compared with sum of the individual processes. (C) 2016 Published by Elsevier B.V.
机译：在装备有蓝色LED光的连续流循环反应器中，成功地使用Ag3PO4 / Bi2S3-HKUST-1-MOF作为新型可见光活性光催化剂，有效地同时进行了锥虫蓝（TB）和vesvevine（VS）的声光降解。合成了在蓝光下具有活化能力的Ag3PO4 / Bi2S3-HKUST-1-MOF，并通过X射线衍射（XRD），扫描电子显微镜（SEM），能量色散X射线（EDX），光致发光（PL）和漫反射光谱（DRS）。初始TB和VS浓度（5-45 mg / L），流速（30-110 mL / min），辐照和超声处理时间（10-30 min），pH（3-11）等操作参数的影响结合中心功能设计（CCD）和期望功能（DF），研究并优化了光催化剂用量（0.15-0.35 g / L）。在最佳条件下发现最大声光降解百分比（分别为TB和VS的98.44％和99.36％）设置为：每种染料25 mg / L，70 mL / min的溶液流速，25分钟的照射和超声处理时间，pH 6和0.25 g / L的光催化剂用量。在最佳条件下，获得的协同指数值为2.53，这表明与单个过程的总和相比，包括超声辐射和光催化的混合系统具有更高的效率。 （C）2016由Elsevier B.V.发布

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