Abstract

In the present research work, sol-gel derived smart nanocomposite of tin antimonophosphate mixed with different concentration of TiO₂ (0–40%) has been synthesized and further characterized through XRD, SEM, EDS, and HRTEM. The aim of this study is to relate the electrical conductivity dependence behavior with the different doping concentration of TiO₂ (0–40%) in the composite. For this, ion exchange capacity (IEC) has been selected as a preliminary criterion for the measurement of other electrochemical properties like; membrane potential, transport number and permselectivity. The composite with 20% TiO₂ in tin antimonophosphate possesses a maximum value, i.e. 0.97 meq/g for IEC, and has been further studied as a case for the material characterisation. Membrane potential, transport number, permselectivity values for the nanocomposite membrane have been found to be better than pristine membrane, for both monovalent and bivalent ions. The composite with 20% TiO₂ in tin antimonophosphate further used a photocatalyst for the degradation MB dye. It shows 97% removal efficiency with apparent rate constant of 0.01314 min^–1. The photocatalytic degradation of MB follows pseudo-first order kinetics.

中文翻译：

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新型视野：具有增强的电化学和光催化性能的智能TiO 2 / Sn（IV）SbP纳米复合材料

摘要

在本研究工作中，已经合成了溶胶-凝胶衍生的智能型纳米复合单反锡磷酸盐与不同浓度的TiO ₂（0-40％）混合，并通过XRD，SEM，EDS和HRTEM对其进行了表征。这项研究的目的是将电导率的依赖行为与复合物中不同的TiO ₂掺杂浓度（0-40％）联系起来。为此，已选择离子交换容量（IEC）作为测量其他电化学性质的初步标准，例如：膜电位，转运数和渗透选择性。含20％TiO ₂的复合材料在单磷酸锡中，Pb的最大值为IEC的0.97 meq / g，并已作为材料表征的案例进行了进一步研究。对于单价和二价离子，已经发现纳米复合膜的膜电势，迁移数，渗透选择性值优于原始膜。在抗一磷酸锡中具有20％TiO ₂的复合材料进一步将光催化剂用于降解MB染料。它显示出97％的去除效率，表观速率常数为0.01314 min ^–1。MB的光催化降解遵循伪一级反应动力学。