Impact of rotational speed and pH on tribocatalytic dye degradation activity of 0.5Ba(Zr0.2Ti0.8)O3‒0.5(Ba0.7Sr0.3)TiO3

IF 1.8 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Ceramic Technology Pub Date : 2024-12-13 DOI:10.1111/ijac.15015

Shivam Dubey, Abhay Singh Thakur, Rahul Vaish, Zaina Algarni, Mohamed A. Ismail, Abdelfattah Amari

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Abstract

The degradation of methylene blue dye via tribocatalysis using 0.5Ba(Zr_0.2Ti_0.8)O₃‒0.5(Ba_0.7Sr_0.3)TiO₃ (BST‒BZT) ceramic powders was investigated under various conditions. The tribocatalytic process was initiated using magnetic stirring with a polytetrafluoroethylene-coated magnetic bar in a glass beaker setup. The degradation efficiency was evaluated at different stirring speeds of 300, 500, and 700 rpm. The results showed significant variation in degradation rates, with the highest degradation efficiency of ∼73% achieved within 12 h at a rotational speed of 700 rpm. Additionally, the impact of pH on the degradation process was examined by adjusting the dye solution to pH levels of 3, 6, and 9. The degradation efficiency increased with higher pH levels, with the maximum degradation occurring in the basic medium (pH 9). Kinetic analysis revealed that the degradation process adhered to pseudo-first-order kinetics, with rate constants of 0.023, 0.035, and 0.104 min⁻¹ at different stirring speeds of 300, 500, and 700 rpm, respectively. This study showcases the potential of BST‒BZT ceramics as efficient tribocatalysts for degrading organic pollutants in wastewater, emphasizing the impact of stirring speed and pH on degradation efficiency.

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转速和pH对0.5Ba(Zr0.2Ti0.8) O3-0.5 (Ba0.7Sr0.3)TiO3摩擦催化降解染料活性的影响

研究了0.5Ba(Zr0.2Ti0.8) O3-0.5 (Ba0.7Sr0.3)TiO3 （BST-BZT）陶瓷粉末在不同条件下对亚甲基蓝染料的摩擦催化降解。摩擦催化过程是通过在玻璃烧杯装置中使用聚四氟乙烯涂层磁棒进行磁力搅拌而启动的。在300、500和700 rpm的不同搅拌速度下，评估了降解效率。结果显示降解率有显著变化，在转速为700转/分的情况下，在12小时内达到最高降解效率约73%。此外，通过调整染料溶液的pH值为3、6和9，研究了pH值对降解过程的影响。pH越高，降解效率越高，在碱性培养基（pH为9）中降解效果最大。动力学分析表明，在300、500和700 rpm的搅拌速度下，降解过程符合准一级动力学，速率常数分别为0.023、0.035和0.104 min - 1。本研究展示了BST-BZT陶瓷作为高效摩擦催化剂降解废水中有机污染物的潜力，强调了搅拌速度和pH对降解效率的影响。

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来源期刊

International Journal of Applied Ceramic Technology 工程技术-材料科学：硅酸盐

CiteScore

3.90

自引率

9.50%

发文量

280

审稿时长

4.5 months

期刊介绍： The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas: Nanotechnology applications; Ceramic Armor; Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors); Ceramic Matrix Composites; Functional Materials; Thermal and Environmental Barrier Coatings; Bioceramic Applications; Green Manufacturing; Ceramic Processing; Glass Technology; Fiber optics; Ceramics in Environmental Applications; Ceramics in Electronic, Photonic and Magnetic Applications;