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Effect of Metal Gradient In Nano Wall of Stratified Type Photocatalyst

机译:梯度型光催化剂纳米壁中金属梯度的影响

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Objective of study was the development of core-shell type ZnS-CdS photocatalyst with the stratified morphology. To form the stratified morphology, condition of the precursor is extremely important. For this purpose, three types of precursors, thus core-shell type, egg-shell type and uniform type, was tried to synthesize by utilizing the results of the calculation. The size of the synthesized precursor particles was about 40-100 nm. Main phase of the particle was gradually changed from ZnO (pH8.0) to Cd(OH)_2 (pH9.5). Detailed analysis of the synthesized precursor was clearly demonstrated that these have the crystalline structure and each metal element was co-existed in one particle. Therefore, it could be concluded that core-shell type or uniform type precursor was successfully synthesized. Core-shell type ZnS-CdS stratified photocatalyst could be successfully synthesized by sulfurization for 1h, and it shows the high photocatalytic activity under visible light irradiation.
机译:研究目的是开发具有分层形态的核壳型ZnS-CdS光催化剂。为了形成分层形态,前驱体的条件极为重要。为此,利用计算结果尝试合成了三种类型的前体,即核壳型,蛋壳型和均一型。合成的前体颗粒的尺寸为约40-100nm。颗粒的主相逐渐从ZnO(pH8.0)变为Cd(OH)_2(pH9.5)。对合成前体的详细分析清楚地表明,它们具有晶体结构,并且每种金属元素共存于一个颗粒中。因此,可以得出结论,成功地合成了核-壳型或均匀型前体。硫化1h可成功合成核-壳型ZnS-CdS分层光催化剂,在可见光照射下具有较高的光催化活性。

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