g-C3N4/MoS2/SnO2杂化物2D/2D/1D结构染料敏化太阳能电池对电极的构建及废水中药物的光降解

IF 7.5 Q1 CHEMISTRY, PHYSICAL
D. Karthigaimuthu , Murad Alsawalha , Aya A.H. Mourad , Anuja A. Yadav , Yuvaraj M. Hunge , Elangovan Thangavel , Abdel Hamid I. Mourad
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引用次数: 0

摘要

本文采用水热法制备了一种非均相g-C3N4/MoS2/SnO2杂化催化剂。用XRD、FTIR和XPS对所制备的杂化物进行了表征和验证。BET分析证实,g-C3N4/MoS2/SnO2的比表面积和孔体积值(65.8 m2 g-1, 0.29 cm3 g-1)均高于g-C3N4。进一步的FE-SEM和HR-TEM分析清楚地表明,自组装的SnO2纳米棒随机自由地分散在g-C3N4和MoS2纳米片上,形成了2D/2D/1D纳米结构。所制备的杂化物可作为制备染料敏化太阳能电池(DSSC)的对电极。所制备的DSSC具有Jsc, Voc参数值为8.6 mA/cm2和0.558 V,得到的FF %和PCE %分别为0.7024%和3.38%。基于g-C3N4/MoS2/SnO2混合材料制备的太阳能电池在15天后保持90%的PCE %。制备的样品在紫外-可见光照射下对环丙沙星(CIP)和布洛芬(IBU)污染物的光催化性能进行了测试,g-C3N4/MoS2/SnO2杂化催化剂对CIP和IBU的光催化降解活性分别为96%和95%。所构建的g-C3N4/MoS2/SnO2杂化体系的光催化机理是基于2D/2D/1D Z-scheme协同作用,并通过清除剂试验和ESR研究进一步探讨了Z-scheme协同作用。以g-C3N4和SnO2为还原剂,以MoS2为助催化剂,实现了光催化剂中电荷分离效率高的降解效率,并进一步研究了其稳定性和可重复使用性。这项工作有效地为构建一种新颖且极具可执行性的UV-Vis光催化剂z方案提供了见解,该方案可降解废水中的药物污染物,并可用于可再生能源的低成本能源收集。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Construction of g-C3N4/MoS2/SnO2 hybrid as 2D/2D/1D architecture for counter electrode of dye-sensitized solar cells and photodegradation of pharmaceutical drugs from wastewater
In this work, we developed a heterogeneous g-C3N4/MoS2/SnO2 hybrid catalyst by a facile hydrothermal technique. A prepared hybrid was characterized and validated by XRD, FTIR and XPS. The BET analysis confirms that the surface area and pore volume values ​​of g-C3N4/MoS2/SnO2 (65.8 m2 g-1, 0.29 cm3 g-1) are higher than those of g-C3N4. Further FE-SEM and HR-TEM analyses clearly show that self-assembled SnO2 nanorods are randomly and freely dispersed in g-C3N4 and MoS2 nanosheets as formed 2D/2D/1D nanostructure. The prepared hybrid served as counter electrodes (CE) for the fabrication of dye-sensitized solar cells (DSSC). The developed DSSC has Jsc, and Voc parameter values of 8.6 mA/cm2 and 0.558 V, then the resulting FF % and PCE % values were 0.7024 % and 3.38 %, respectively. The fabricated solar cells based on g-C3N4/MoS2/SnO2 hybrid maintain 90 % of PCE % after 15 days. The photocatalytic function of the produced samples was tested against the ciprofloxacin (CIP) and ibuprofen (IBU) pollutants degradation under UV–Vis light irradiation and the g-C3N4/MoS2/SnO2 hybrid catalyst showed higher photocatalytic degradation activity of 96 and 95 % towards CIP and IBU, respectively, which have higher efficiency than other synthesized samples within 80 and 100 min. The proposed photocatalytic mechanism of the constructed g-C3N4/MoS2/SnO2 hybrid system is based on 2D/2D/1D Z-scheme synergy, and further Z-scheme synergy was investigated by a scavenger test and ESR studies. The high charge separation efficiency in the photocatalyst is responsible for the improved degradation efficiency, which is achieved using g-C3N4 and SnO2 as the reducing agents and MoS2 as the co-catalyst and further studied its stability and reusability. This work effectively provides insight into the construction of a novel and extremely enforceable Z-scheme for UV–Vis light-based photocatalysts to degrade pharmaceutical pollutants from wastewater and low-cost energy harvesting for renewable energy.
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CiteScore
8.10
自引率
1.60%
发文量
128
审稿时长
66 days
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