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Making Pb Adsorption-Saturated Attapulgite with Excellent Photocatalysis Properties through a Vulcanization Reaction and Its Application for MB Wastewater Degradation

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  • Xiao Zhang

    (School of Environmental Ecology, Jiangsu City Vocational College, Nanjing 210017, China)

  • Chen Chen

    (School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China)

  • Ting Cheng

    (School of Environmental Ecology, Jiangsu City Vocational College, Nanjing 210017, China)

  • Mingyue Wen

    (School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China)

  • Lei Wang

    (School of Environmental and Chemical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China)

  • Fenxu Pan

    (School of Environmental Ecology, Jiangsu City Vocational College, Nanjing 210017, China)

Abstract

Attapulgite (AT) is a clay mineral with rich reserves in China, and it has good adsorption activity for Pb-containing wastewater. However, as a hazardous waste, the treatment of Pb adsorption-saturated attapulgite was quite difficult. In this work, through a simple vulcanization reaction, the waste Pb adsorption-saturated attapulgite (AT@Pb) was transformed into composite materials (AT@PbS) with good photocatalytic performance. After comprehensive material characterization (including XRD, TEM, XPS, and UV-Vis), the photocatalytic degradation performance and mechanism of AT@PbS for methylene blue (MB) were investigated. The results revealed that AT@PbS was a composite material of attapulgite nanorods (500–600 nm) and nanosquare PbS particles (80–100 nm). Additionally, AT@PbS displayed good visible light absorption, improved photo-electric properties, excellent photodegradation performance for MB, and recycling stability. Moreover, the energy band range of AT@PbS was about −0.043 V to 1.367 V. The photo-generated holes and their derived hydroxyl radicals were the main active species for MB degradation. This work not only provides a new approach to construct the composite photocatalyst, but also demonstrates the possibility of the comprehensive utilization of heavy metal adsorbents for wastewater degradation.

Suggested Citation

  • Xiao Zhang & Chen Chen & Ting Cheng & Mingyue Wen & Lei Wang & Fenxu Pan, 2022. "Making Pb Adsorption-Saturated Attapulgite with Excellent Photocatalysis Properties through a Vulcanization Reaction and Its Application for MB Wastewater Degradation," IJERPH, MDPI, vol. 19(16), pages 1-16, August.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:16:p:10457-:d:894764
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    References listed on IDEAS

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    1. Hongyang Lin & Yang Yang & Zhenxiao Shang & Qiuhong Li & Xiaoyin Niu & Yanfei Ma & Aiju Liu, 2022. "Study on the Enhanced Remediation of Petroleum-Contaminated Soil by Biochar/g-C 3 N 4 Composites," IJERPH, MDPI, vol. 19(14), pages 1-14, July.
    2. Hong Ha Thi Vu & Shuai Gu & Thenepalli Thriveni & Mohd Danish Khan & Lai Quang Tuan & Ji Whan Ahn, 2019. "Sustainable Treatment for Sulfate and Lead Removal from Battery Wastewater," Sustainability, MDPI, vol. 11(13), pages 1-8, June.
    3. Yanmin Yu & Ke Liu & Yangyang Zhang & Xuan Xing & Hua Li, 2022. "High Photocatalytic Activity of g-C 3 N 4 /La-N-TiO 2 Composite with Nanoscale Heterojunctions for Degradation of Ciprofloxacin," IJERPH, MDPI, vol. 19(8), pages 1-17, April.
    4. Xiang Guo & Lei Rao & Zhenyu Shi, 2022. "Preparation of High-Porosity B-TiO 2 /C 3 N 4 Composite Materials: Adsorption–Degradation Capacity and Photo-Regeneration Properties," IJERPH, MDPI, vol. 19(14), pages 1-16, July.
    5. Hong Liu & Houwang Chen & Ning Ding, 2022. "Visible Light-Based Ag 3 PO 4 /g-C 3 N 4 @MoS 2 for Highly Efficient Degradation of 2-Amino-4-acetylaminoanisole (AMA) from Printing and Dyeing Wastewater," IJERPH, MDPI, vol. 19(5), pages 1-14, March.
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