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首页> 外文期刊>Journal of Materials Science >Facile synthesis of exfoliated graphitic carbon nitride for photocatalytic degradation of ciprofloxacin under solar irradiation
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Facile synthesis of exfoliated graphitic carbon nitride for photocatalytic degradation of ciprofloxacin under solar irradiation

机译：剥落石墨氮化物中脱裂性石墨氮化物在太阳辐照下的光催化降解

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Exfoliated g-C3N4 nanoparticles prepared by a green route (an aqueous bi-thermal method) were characterized by techniques such as XRD, UV-VDRS, FESEM, PL, TEM. Degradation of an aqueous solution of ciprofloxacin (CPN), when exposed to solar irradiation in the presence of g-C3N4 nanoparticles, was studied to evaluate the photocatalytic activities of semiconductor photocatalyst. The photocatalytic activities of g-C3N4 have enhanced after its exfoliation. The exfoliated g-C3N4 obtained with the aqueous bi-thermal method provided about three times the large surface area and about two and half times effective photocatalyst as bulk g-C3N4. The results of electrochemical tests like linear sweep voltammetry, MS graphs of exfoliated g-C3N4 nanoparticles together with electrochemical impendence (EIS) corroborated the results of photocatalytic activities of g-C3N4 after exfoliation. The enhanced photocatalytic behavior of exfoliated g-C3N4 is the result of its efficient separation, low recombination of photogenerated charge carriers and high surface area. The effects of exfoliated g-C3N4 catalyst concentration, irradiation time and initial CPN concentration on the degradation of CPN were carefully studied. We found that 1g/L nano-exfoliated g-C3N4 can degrade up to 78% a 20ppm CPN solution exposed to solar light for 1h. The studies also incorporated scavenger tests to possibly identify reactive species and mechanism for CPN degradation. This work provided a new method for scalable exfoliation of g-C3N4.
机译：剥离G-C3N4纳米颗粒由绿色路线（水性双热法）进行了表征技术如X射线衍射，UV-VDRS，FESEM，PL，TEM制备。环丙沙星（CPN）的水溶液中的降解，当暴露于在G-C3N4纳米颗粒的存在太阳辐射，进行了研究以评估半导体光催化剂的光催化活性。 G-C3N4的光催化活性的剥脱后有增强。剥离G-C3N4与设置的约三倍大的表面积和大约两倍半有效光催化剂作为散装G-C3N4水性双热法获得。像线性扫描伏安法电化学测试的结果，剥离的G-C3N4的MS图电化学阻抗（EIS）一起纳米颗粒证实的G-C3N4的光催化活性的结果剥离后。剥离G-C3N4的增强光催化性能是它的有效的分离，光生电荷载流子和高表面积的低复合的结果。脱落G-C3N4催化剂浓度，照射时间和CPN的降解初始CPN浓度的影响进行了认真研究。我们发现，1克/ L纳米剥离G-C3N4可以降解高达78％暴露于太阳光线下1H一个20ppm的CPN溶液。该研究也纳入清道夫测试，以找出可能的活性物质和机制CPN降解。这项工作提供了G-C3N4的可扩展性去角质的新方法。

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  • 来源
    《Journal of Materials Science》 |2019年第7期|共17页
  • 作者

    Pattnaik Sambhu Prasad; Behera Arjun; Martha Satyabadi; Acharya Rashmi; Parida Kulamani;

  • 作者单位

    Siksha O Anusandhan Univ ITER Ctr Nano Sci &

    Nano Technol Bhubaneswar 751030 Odisha India;

    Siksha O Anusandhan Univ ITER Ctr Nano Sci &

    Nano Technol Bhubaneswar 751030 Odisha India;

    Siksha O Anusandhan Univ ITER Ctr Nano Sci &

    Nano Technol Bhubaneswar 751030 Odisha India;

    Siksha O Anusandhan Univ ITER Ctr Nano Sci &

    Nano Technol Bhubaneswar 751030 Odisha India;

    Siksha O Anusandhan Univ ITER Ctr Nano Sci &

    Nano Technol Bhubaneswar 751030 Odisha India;

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  • 正文语种 eng
  • 中图分类 工程材料学;
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