Photocatalytic performance and characterization of tungsten oxide powders recycled from cutting tool wastes

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Ceramic Technology Pub Date : 2025-07-15 DOI:10.1111/ijac.70017

Nusret Kaya, Ahmet Yavaş, Mücahit Sütçü, Merve Karaman

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Abstract

In this study, with recycling process from waste sludge formed by the wear of WC cutting tools used as a cutting tool in the machining industry has been presented. WC waste transformed to WO₃₋_x have been characterized by the X-ray diffraction, and scanning electron microscopy–EDS analysis. The formation of WO₃₋_x from the waste WC bulk materials was further confirmed by Fourier transform infrared spectroscopy and Raman spectroscopy. To understand its photocatalytic performance, the photophysical properties of the material were investigated with UV–vis. The photocatalytic degradation of organic impurities in the water from a recycled material was carried out. According to the results, the best photodegradation efficiency was obtained with the 0.4 × 10⁻⁵M catalyst concentration. The maximum degradation efficiency reached 93.34% for an initial MB concentration of 0.4 × 10⁻⁵ M using 7.5 mg catalyst (0.25 g·L⁻¹), with an apparent reaction rate constant (k_app) of 4.401 × 10⁻¹ h⁻¹. The presence of the WO₃₋x catalyst enhanced the degradation rate by up to 6 times compared to photolysis. These findings demonstrate the high photocatalytic performance of WO₃₋x obtained from industrial waste, presenting a promising solution for wastewater treatment.

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刀具废料氧化钨粉的光催化性能及表征

本研究介绍了WC刀具磨损后形成的废污泥作为切削刀具在机械加工行业中的回收利用工艺。用x射线衍射、扫描电镜和能谱分析对WC废转化为WO3−x进行了表征。傅里叶变换红外光谱和拉曼光谱进一步证实了废WC块体材料中WO3−x的形成。为了了解其光催化性能，用紫外可见光谱研究了材料的光物理性质。以回收材料为原料，进行了光催化降解水中有机杂质的研究。结果表明，催化剂浓度为0.4 × 10−5 M时，光降解效率最高。使用7.5 mg催化剂（0.25 g·L⁻¹），当初始MB浓度为0.4 × 10⁻- M时，最大降解效率达到93.34%，表观反应速率常数（k_app）为4.401 × 10⁻¹h⁻。与光解相比，WO3−x催化剂的存在使降解率提高了6倍。这些发现证明了从工业废水中获得的WO3−x具有良好的光催化性能，为废水处理提供了一种有前途的解决方案。

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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;