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首页> 外文期刊>Materials Science and Engineering >Mechanistic insight of dye degradation using TiO_2 anchored α-MnO_2 nanorods as promising sunlight driven photocatalyst
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Mechanistic insight of dye degradation using TiO_2 anchored α-MnO_2 nanorods as promising sunlight driven photocatalyst

机译：使用TiO_2锚定α-MnO_2纳米码作为有前途的阳光驱动光催化剂的机械洞察

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摘要

Sunlight driven heterostructured photocatalysts have attracted remarkable attention for the degradation of organic pollutants, including toxic dyes. In present study, the synthesis of TiO_2 NPs anchored α-MnO_2 nanorods based catalyst has been reported for the degradation of CBB R-250, a widely used textile dye. The FE-SEM analysis showed the rod-like structure of α-MnO_2, uniformly decorated with TiO_2 NPs, further confirmed by EDX. The XPS revealed the binding energy and oxidation states of prepared photocatalyst. Designed photo-catalyst efficiently degraded (98.35％) dye after 30 min sunlight irradiation. The narrow bandgap (2.8 eV) of the designed photocatalyst was one of the key factors for enhanced photocatalytic activity. CBB degradation reaction followed pseudo-first order kinetics with maximum removal efficiency of ＞ 85％. The ESI-MS~2 mass spectra has further validated the dye mineralization. The biosafety of designed catalyst was checked in HEK293T cells with IC_(50) = 160.7, which is considered as benign to human and their environment.
机译：阳光驱动的异质结构光催化剂引起了有机污染物的降解的显着关注，包括有毒染料。在本研究中，已经报道了TiO_2NPS的合成锚固基于α-MnO_2纳米棒的催化剂，用于CBB R-250的降解，广泛使用的纺织染料。 Fe-SEM分析显示α-mnO_2的棒状结构，均匀地用TiO_2 NPS装饰，通过EDX进一步证实。 XPS揭示了制备光催化剂的结合能量和氧化态。在30分钟的阳光照射后，设计的光催化剂有效降解（98.35％）染料。设计光催化剂的窄带隙（2.8eV）是增强光催化活动的关键因素之一。 CBB降解反应遵循伪第一阶动力学，最大去除效率> 85％。 ESI-MS〜2质谱进一步验证了染料矿化。用IC_（50）= 160.7的HEK293T细胞中检查设计催化剂的生物安全，被认为是对人类及其环境的良​​性。

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  • 来源
    《Materials Science and Engineering》 |2021年第9期|115257.1-115257.10|共10页
  • 作者

    Ata Ullah; Lutfur Rahman; Syed Zajif Hussain; Wasim Abbas; Abdul Tawab; Asim Jilani; Sadia Zafar Bajwa; Waheed S. Khan; Rabia Riaz; Irshad Hussain; Asma Rehman;

  • 作者单位

    National Institute for Biotechnology & Genetic Engineering (NIBGE) P. O. Box. No. 577 Jhang Road Faisalabad Pakistan;

    National Institute for Biotechnology & Genetic Engineering (NIBGE) P. O. Box. No. 577 Jhang Road Faisalabad Pakistan;

    Department of Chemistry and Chemical Engineering SBA School of Science & Engineering (SBASSE) Lahore University of Management Sciences (LUMS) DHA Lahore Cantt-54792 Pakistan;

    National Institute for Biotechnology & Genetic Engineering (NIBGE) P. O. Box. No. 577 Jhang Road Faisalabad Pakistan;

    National Institute for Biotechnology & Genetic Engineering (NIBGE) P. O. Box. No. 577 Jhang Road Faisalabad Pakistan;

    Center of Nanotechnology King Abdul Aziz University Jeddah Saudi Arabia;

    National Institute for Biotechnology & Genetic Engineering (NIBGE) P. O. Box. No. 577 Jhang Road Faisalabad Pakistan;

    National Institute for Biotechnology & Genetic Engineering (NIBGE) P. O. Box. No. 577 Jhang Road Faisalabad Pakistan;

    Department of Chemistry University of Agriculture Faisalabad 38000 Pakistan;

    Department of Chemistry and Chemical Engineering SBA School of Science & Engineering (SBASSE) Lahore University of Management Sciences (LUMS) DHA Lahore Cantt-54792 Pakistan;

    National Institute for Biotechnology & Genetic Engineering (NIBGE) P. O. Box. No. 577 Jhang Road Faisalabad Pakistan;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Photocatalysis; Organic dyes; Recalcitrant; α-MnO_2/TiO_2;

    机译：光催化;有机染料;顽抗;α-mno_2 / tiO_2;

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