Enhanced Photoelectrocatalytic Performance Using Chalcogenide Te/TiO2/Ti Nanotube Array Based on COD Analyses for Water Treatment Applications

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2023-03-16 DOI:10.1007/s12678-023-00820-3

Muhammad Nurdin, Ilham Ilham, Maulidiyah Maulidiyah, Muh. Zakir Muzakkar, Dwiprayogo Wibowo, Zul Arham, La Ode Agus Salim, Irwan Irwan, Catherina Bijang, Akrajas Ali Umar

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引用次数: 2

Abstract

The effect of Te doping of the TiO₂/Ti nanotube arrays (NTAs) on the photoelectrochemical chemical oxygen demand (COD) detection has been investigated. It is found that the Te doping has enhanced the photoelectrocatalytic properties of the TiO₂/Ti NTAs electrode. This indicated by the linearity, accuracy, and repeatability of measurement of the test compounds chemicals. The Te-TiO₂/Ti NTAs shows an excellent linearity to all test compounds up to 10 μM of concentration. It is only up to 5 μM in pristine TiO₂/Ti NTAs system. In term of accuracy, the Te-TiO₂/Ti NTAs electrode can provide the measurement accuracy of up to 100% fit to the theoretical value for all test compound chemical. It is only less than 80% for TiO₂/Ti NTAs electrode. Meanwhile, the repeatability of measurement for the electrode, the Te-TiO₂/Ti NTAs exhibits 1.8% RSD value, which is lower than the pristine TiO₂/Ti NTAs, i.e., 2%. The enhancement of the photoelectrocatalytic properties of the TiO₂ by Te doping is due to the lowering of electron and hole recombination during the photoactivation, promoting massive surface reaction with organic compounds and improving the sensing sensitivity. The Te-TiO₂/Ti NTAs should find the extensive application of PECOD detection of organic contamination in the environment.

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基于COD分析的硫系Te/TiO2/Ti纳米管阵列增强水处理中光电催化性能

研究了TiO2/Ti纳米管阵列(NTAs)中Te掺杂对光电化学需氧量(COD)检测的影响。结果表明，Te的掺杂增强了TiO2/Ti NTAs电极的光电催化性能。这表明了测试化合物化学测量的线性，准确性和可重复性。Te-TiO2/Ti NTAs在10 μM浓度范围内对所有测试化合物均表现出良好的线性关系。在原始的TiO2/Ti NTAs体系中，其厚度仅为5 μM。在精度方面，Te-TiO2/Ti NTAs电极对所有被测化合物化学物质的测量精度可达到理论值的100%。对于TiO2/Ti NTAs电极，其回收率仅小于80%。同时，Te-TiO2/Ti NTAs电极测量的重复性RSD值为1.8%，低于原始TiO2/Ti NTAs的2%。Te掺杂对TiO2光电催化性能的增强是由于光活化过程中电子和空穴复合的减少，促进了与有机化合物的大量表面反应，提高了传感灵敏度。Te-TiO2/Ti NTAs在环境有机污染的PECOD检测中有广泛的应用前景。

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来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

期刊介绍： Electrocatalysis is cross-disciplinary in nature, and attracts the interest of chemists, physicists, biochemists, surface and materials scientists, and engineers. Electrocatalysis provides the unique international forum solely dedicated to the exchange of novel ideas in electrocatalysis for academic, government, and industrial researchers. Quick publication of new results, concepts, and inventions made involving Electrocatalysis stimulates scientific discoveries and breakthroughs, promotes the scientific and engineering concepts that are critical to the development of novel electrochemical technologies. Electrocatalysis publishes original submissions in the form of letters, research papers, review articles, book reviews, and educational papers. Letters are preliminary reports that communicate new and important findings. Regular research papers are complete reports of new results, and their analysis and discussion. Review articles critically and constructively examine development in areas of electrocatalysis that are of broad interest and importance. Educational papers discuss important concepts whose understanding is vital to advances in theoretical and experimental aspects of electrochemical reactions.