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Preparation and characterization of an Ag3PO4/GaOOH composite with enhanced photocatalytic performance toward rhodamine B
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2020/01/07 , DOI: 10.1039/c9nj05987c Panqi Huang 1, 2, 3, 4, 5 , Jingfei Luan 1, 5, 6, 7, 8
New Journal of Chemistry ( IF 2.7 ) Pub Date : 2020/01/07 , DOI: 10.1039/c9nj05987c Panqi Huang 1, 2, 3, 4, 5 , Jingfei Luan 1, 5, 6, 7, 8
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A highly efficient Ag3PO4/GaOOH composite was innovatively prepared and its photocatalytic performance was evaluated through degrading rhodamine B (RhB) under illumination, in this paper. Characterizations including XRD, SEM-EDS, TEM, FT-IR, XPS, UV-Vis DRS, PL and EPR were performed to analyze the properties of the Ag3PO4/GaOOH composite. The SEM-EDS results indicated that Ag3PO4 particles were dispersed on the surface of GaOOH sticks. The (210) plane of Ag3PO4 particles and the (200) plane of GaOOH sticks were simultaneously observed in the TEM results. UV-Vis DRS analysis indicated that the spectrum of the Ag3PO4/GaOOH composite showed a significant red shift compared to that of pure GaOOH. PL spectra also indicated that the construction of the Ag3PO4/GaOOH composite significantly declined the recombination rate of photogenerated electrons-hole pairs. The photocatalytic degradation experiments showed that the 30 wt% Ag3PO4/GaOOH composite demonstrated excellent performance under illumination. After a reaction time of 60 min, the decolorization rate of RhB was up to 97.83% using the 30 wt% Ag3PO4/GaOOH composite. Further studies confirmed that the 30 wt% Ag3PO4/GaOOH composite had good stability and the contribution of active species during degradation was of the order h+ > ˙O2− > ˙OH. The results of this study would provide a new perspective for improving the applications of wide band gap semiconductors, particularly for light-induced degradation.
中文翻译：
具有增强的若丹明B光催化性能的Ag3PO4 / GaOOH复合材料的制备与表征
本文创新地制备了一种高效的Ag 3 PO 4 / GaOOH复合材料，并通过在光照下降解罗丹明B（RhB）评估了其光催化性能。进行了XRD，SEM-EDS，TEM，FT-IR，XPS，UV-Vis DRS，PL和EPR等表征，以分析Ag 3 PO 4 / GaOOH复合材料的性能。SEM-EDS结果表明Ag 3 PO 4颗粒分散在GaOOH棒的表面上。在TEM结果中同时观察到Ag 3 PO 4粒子的（210）面和GaOOH棒的（200）面。UV-Vis DRS分析表明Ag 3的光谱与纯GaOOH相比，PO 4 / GaOOH复合材料显示出明显的红移。PL光谱还表明，Ag 3 PO 4 / GaOOH复合物的构造显着降低了光生电子-空穴对的复合率。光催化降解实验表明，30 wt％Ag 3 PO 4 / GaOOH复合材料在光照下表现出优异的性能。在60分钟的反应时间之后，使用30wt％的Ag 3 PO 4 / GaOOH复合材料，RhB的脱色率高达97.83％。进一步的研究证实，30 wt％Ag 3 PO 4/ GaOOH复合材料具有良好的稳定性和活性物质的降解过程中的贡献是顺序H的+ > 0 2 - > OH。这项研究的结果将为改善宽带隙半导体的应用，特别是光诱导降解提供新的视角。
更新日期：2020-02-11
中文翻译：
具有增强的若丹明B光催化性能的Ag3PO4 / GaOOH复合材料的制备与表征
本文创新地制备了一种高效的Ag 3 PO 4 / GaOOH复合材料，并通过在光照下降解罗丹明B（RhB）评估了其光催化性能。进行了XRD，SEM-EDS，TEM，FT-IR，XPS，UV-Vis DRS，PL和EPR等表征，以分析Ag 3 PO 4 / GaOOH复合材料的性能。SEM-EDS结果表明Ag 3 PO 4颗粒分散在GaOOH棒的表面上。在TEM结果中同时观察到Ag 3 PO 4粒子的（210）面和GaOOH棒的（200）面。UV-Vis DRS分析表明Ag 3的光谱与纯GaOOH相比，PO 4 / GaOOH复合材料显示出明显的红移。PL光谱还表明，Ag 3 PO 4 / GaOOH复合物的构造显着降低了光生电子-空穴对的复合率。光催化降解实验表明，30 wt％Ag 3 PO 4 / GaOOH复合材料在光照下表现出优异的性能。在60分钟的反应时间之后，使用30wt％的Ag 3 PO 4 / GaOOH复合材料，RhB的脱色率高达97.83％。进一步的研究证实，30 wt％Ag 3 PO 4/ GaOOH复合材料具有良好的稳定性和活性物质的降解过程中的贡献是顺序H的+ > 0 2 - > OH。这项研究的结果将为改善宽带隙半导体的应用，特别是光诱导降解提供新的视角。
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