Sunlight assisted degradation of a pollutant dye in water by a WO3@g-C3N4 nanocomposite catalyst

Borthakur Sukanya; Basyach Purashri; Kalita Lisamoni; Sonowal Karanika; Tiwari Arnritanjali; Chetia Pubali; Saikia Lakshi

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Sunlight assisted degradation of a pollutant dye in water by a WO3@g-C3N4 nanocomposite catalyst

机译：阳光通过WO3 @ G-C3N4纳米复合催化剂辅助水中污染物染料的降解

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A series of WO3@g-C3N4 nanocomposites were synthesized and characterized by different physico-chemical techniques. The photocatalytic performance was investigated by degradation of Rhodamine B (100 ppm) in the presence of H2O2 under sunlight irradiation. The optimum loading of WO3 for the best performance is 2 wt%, at which the WO3@g-C3N4 nanocomposite exhibits the highest degradation efficiency of 99.5% under sunlight irradiation. The degradation with 2 wt% WO3@g-C3N4 follows pseudo first order kinetics and the rate constant is almost 2.6 and 7.7 times higher than that of 'neat' g-C3N4 and WO3. This WO3@g-C3N4 showed good recyclability with 94.2% efficiency after the seventh cycle. The enhancement of the photocatalytic efficiency of as-synthesized WO3@g-C3N4 nanocomposites may be due to the synergistic effect between WO3 and g-C3N4, high separation and easy transfer of photo-excited charge carriers at the interface of nanocomposites and the high specific area of the nanocomposites. The finding suggests that the as-synthesized WO3@g-C3N4 can exhibit high potential towards solar energy harvesting and environmental remediation.

机译：通过不同的物理化学技术合成了一系列WO3 @ G-C3N4纳米复合材料，其特征。通过在阳光照射下的H 2 O 2存在下通过罗丹明B（100ppm）的降解来研究光催化性能。 WO3最佳性能的最佳负载是2wt％，其中WO3 @ G-C3N4纳米复合材料在阳光照射下表现出99.5％的最高降解效率。具有2wt％WO3 @ G-C3N4的降解遵循伪第一阶动力学，速率常数几乎比“整齐”G-C3N4和WO3高出2.6％，7.7倍。该WO3 @ G-C3N4在第七循环后效率为94.2％，效率良好。增强的AS合成的WO3 @ G-C3N4纳米复合材料的增强可能是由于WO3和G-C3N4之间的协同效应，高分分离和纳米复合物界面处的光激炭载体的易于转移和高特异性纳米复合材料的区域。该发现表明，AS合成的WO3 @ G-C3N4可以表现出高潜力的太阳能收集和环境修复。

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来源
《New Journal of Chemistry》 |2020年第7期|共14页
作者
Borthakur Sukanya; Basyach Purashri; Kalita Lisamoni; Sonowal Karanika; Tiwari Arnritanjali; Chetia Pubali; Saikia Lakshi;
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作者单位

North East Inst Sci &

Technol CSIR Mat Sci &

Technol Div Jorhat 785006 Assam India;

North East Inst Sci &

Technol CSIR Mat Sci &

Technol Div Jorhat 785006 Assam India;

North East Inst Sci &

Technol CSIR Mat Sci &

Technol Div Jorhat 785006 Assam India;

North East Inst Sci &

Technol CSIR Mat Sci &

Technol Div Jorhat 785006 Assam India;

Indian Inst Chem Technol CSIR Dept Energy &

Environm Engn Uppal Rd Hyderabad 500007 India;

North East Inst Sci &

Technol CSIR Mat Sci &

Technol Div Jorhat 785006 Assam India;

North East Inst Sci &

Technol CSIR Mat Sci &

Technol Div Jorhat 785006 Assam India;

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1. Sunlight assisted degradation of a pollutant dye in water by a WO3@g-C3N4 nanocomposite catalyst [J] . Borthakur Sukanya, Basyach Purashri, Kalita Lisamoni, New Journal of Chemistry . 2020,第7期

机译：阳光通过WO3 @ G-C3N4纳米复合催化剂辅助水中污染物染料的降解
2. Synthesis of N-F-codoped TiO2/SiO2 nanocomposites as a visible and sunlight response photocatalyst for simultaneous degradation of organic water pollutants and reduction of Cr (VI) [J] . Ghanbari Sina, Givianrad Mohammad Hadi, Azar Parviz Aberoomand Journal of Sol-Gel Science and Technology . 2019,第2期

机译：N-F编号的TiO2 / SiO2纳米复合材料作为可见和阳光响应光催化剂，用于同时降解有机水污染物和Cr（VI）的减少
3. Preparation and Photocatalytic Activities of TiO_2-rGO Nanocomposite Catalysts for MB Dye Degradation over Sunlight Irradiation [J] . Chaval Sriwong, Kittisak Choojun, Worapol Tejangkura, Materials science forum . 2018,第期

机译：TiO_2-rGO纳米复合催化剂的制备及其光催化降解MB染料的性能
4. Efficient Sunlight Active Nanocomposite Photocatalyst for Degradation of Pollutant Organic Dyes [C] . Limei Duan, Jinghai Liu, Qingyu Pang, International Conference on Energy and Environmental Protection . 2013

机译：高效阳光活性纳米复合光催化剂，用于降解污染物有机染料
5. Sunlight Active (CoTiO3) - Titania (TiO2) Catalyst with Effective Activity for Dye Degradation and H+ Evolution [D] . Singh, Mudit Mohan. 2018

机译：具有活性的染料降解和H +分解有效活性的阳光活性（CoTiO3）-二氧化钛（TiO2）催化剂
6. Large-scale study for the photocatalytic degradation of paracetamol using Fe2O3/TiO2 nanocomposite catalyst and CPC reactor under natural sunlight radiations [O] . Omar Fawzi Suleiman Khasawneh, Puganeshwary Palaniandy, Lum Pei Teng 2019

机译：Fe2O3 / TiO2纳米复合催化剂和CPC反应器在自然阳光辐射下大规模催化对乙酰氨基酚的降解
7. Synthesis of N-Doped ZnO Nanocomposites for Sunlight Photocatalytic Degradation of Textile Dye Pollutants [O] . Rowshon Kabir, Md. Abu Khalid Saifullah, Abrar Zadeed Ahmed, 2020

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Sunlight assisted degradation of a pollutant dye in water by a WO3@g-C3N4 nanocomposite catalyst

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