Silver decorated 2D nanosheets of GO and MoS2 serve as nanocatalyst for water treatment and antimicrobial applications as ascertained with molecular docking evaluation

Qumar U.; Hassan J.; Naz S.; Haider A.; Raza A.; Ul-Hamid A.; Haider J.; Shahzadi I; Ahmad I; Ikram M.

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Silver decorated 2D nanosheets of GO and MoS2 serve as nanocatalyst for water treatment and antimicrobial applications as ascertained with molecular docking evaluation

机译：Silver装饰2D纳米胸部Go和MOS2用作水处理和抗菌应用的纳米催化剂，如分子对接评估所确定的

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In this work, synthesis of graphene oxide (GO) and reduced graphene oxide (rGO) was realized through a modified Hummers route. Different concentrations (5 and 10 wt%) of Ag were doped in MoS2 and rGO using a hydrothermal technique. Synthesized Ag-MoS2 and Ag-rGO were evaluated through XRD that confirmed the hexagonal structure of MoS2 along with the transformation of GO to Ag-rGO as indicated by a shift in XRD peaks while Mo-O bonding and S=O functional groups were confirmed with FTIR. Morphological information of GO and formation of MoS2 nanopetals as well as interlayer spacing were verified through FESEM and HRTEM respectively. Raman analysis was employed to probe any evidence regarding defect densities of GO. Optical properties of GO, MoS2, Ag-rGO, and Ag-MoS2 were visualized through UV-vis and PL spectroscopy. Prepared products were employed as nanocatalysts to purify industrial wastewater. Experimental results revealed that Ag-rGO and Ag-MoS2 showed 99% and 80% response in photocatalytic activity. Besides, the nanocatalyst (Ag-MoS2 and Ag-rGO) exhibited 6.05 mm inhibition zones against S. aureus gram positive (G+) and 3.05 mm for E. coli gram negative (G-) in antibacterial activity. To rationalize biocidal mechanism of Ag-doped MoS2 NPs and Ag-rGO, in silico molecular docking study was employed for two enzymes i.e. beta-lactamase and D-alanine-D-alanine ligase B (ddlB) from cell wall biosynthetic pathway and enoyl-[acylcarrier-protein] reductase (FabI) from fatty acid biosynthetic pathway belonging to S. aureus. The present study provides evidence for the development of cost-effective, environment friendly and viable candidate for photocatalytic and antimicrobial applications.

机译：在这项工作中，通过改进的Hummers路线实现了氧化石墨烯（GO）和还原氧化石墨烯（rGO）的合成。采用水热技术在MoS2和rGO中掺杂了不同浓度（5和10 wt%）的Ag。通过XRD对合成的Ag-MoS2和Ag-rGO进行了评估，证实了MoS2的六角结构以及GO向Ag-rGO的转化，XRD峰的移动表明了这一点，而通过FTIR确认了Mo-O键和S=O官能团。通过FESEM和HRTEM分别验证了GO的形态信息、MoS2纳米花瓣的形成以及层间间距。拉曼分析被用来探测任何关于GO缺陷密度的证据。通过紫外可见光谱和光致发光光谱观察了GO、MoS2、Ag-rGO和Ag-MoS2的光学性质。制备的产物被用作纳米催化剂来净化工业废水。实验结果表明，Ag-rGO和Ag-MoS2的光催化活性分别为99%和80%。此外，纳米催化剂（Ag-MoS2和Ag-rGO）对金黄色葡萄球菌革兰氏阳性（G+）和大肠杆菌革兰氏阴性（G-）的抑菌活性分别为6.05mm和3.05mm。为了理顺掺银的MoS2 NP和Ag rGO的杀生机制，采用了电子分子对接研究，对两种酶进行了研究，即来自细胞壁生物合成途径的β-内酰胺酶和D-丙氨酸-D-丙氨酸连接酶B（ddlB）以及来自属于金黄色葡萄球菌的脂肪酸生物合成途径的烯醇基-[酰基载体蛋白]还原酶（FabI）。本研究为开发具有成本效益、环境友好且可行的光催化和抗菌应用候选材料提供了证据。

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来源
《Nanotechnology》 |2021年第25期|共22页
作者
Qumar U.; Hassan J.; Naz S.; Haider A.; Raza A.; Ul-Hamid A.; Haider J.; Shahzadi I; Ahmad I; Ikram M.;
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作者单位

Riphah Int Univ Riphah Inst Comp &

Appl Sci RICAS Dept Phys 14 Ali Rd Lahore Pakistan;

Riphah Int Univ Riphah Inst Comp &

Appl Sci RICAS Dept Phys 14 Ali Rd Lahore Pakistan;

Chinese Acad Sci Tianjin Inst Ind Biotechnol Tianjin 300308 Peoples R China;

Univ Vet &

Anim Sci Dept Clin Med &

Surg Lahore 54000 Punjab Pakistan;

Riphah Int Univ Riphah Inst Comp &

Appl Sci RICAS Dept Phys 14 Ali Rd Lahore Pakistan;

King Fahd Univ Petr &

Minerals Res Inst Ctr Engn Res Dhahran 31261 Saudi Arabia;

Chinese Acad Sci Tianjin Inst Ind Biotechnol Tianjin 300308 Peoples R China;

Univ Punjab Coll Pharm Lahore 54000 Pakistan;

Allama Iqbal Open Univ Dept Chem Islamabad 44000 Pakistan;

Univ Lahore Dept Phys Solar Cell Applicat Res Lab Govt Coll Lahore 54000 Punjab Pakistan;

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原文格式 PDF
正文语种 eng
中图分类特种结构材料;
关键词
silver; rGO; MoS2; nanopetals; photocatalytic; wastewater; molecular docking;

机译：银rGO;MoS2;纳米花瓣;光催化;废水;分子对接;

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2. Unsaturated-sulfur-rich MoS2 nanosheets decorated on free-standing SWNT film： Synthesis, characterization and electrocatalytic application [J] . Daobin Liu1, Weiyu Xu1, Qin Liu1, 纳米研究：英文版 . 2016,第007期
3. Unsaturated-sulfur-rich MoS2 nanosheets decorated on free-standing SWNT film: Synthesis, characterization and electrocatalytic application [J] . Daobin Liu, Weiyu Xu, Qin Liu, 纳米研究（英文版） . 2016,第007期
4. Constructing novel visible-light-driven ternary photocatalyst of AgBr nanoparticles decorated 2D/2D heterojunction of g-C3N4/BiOBr nanosheets with remarkably enhanced photocatalytic activity for water-treatment [J] . Tang Guogang, Zhang Feixia, Huo Pengwei, CERAMICS INTERNATIONAL . 2019,第15期

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5. Outstanding performance of silver-decorated MoS2 nanopetals used as nanocatalyst for synthetic dye degradation [J] . Ikram M., Khan M. I., Raza A., Physica, E. Low-dimensional systems & nanostructures . 2020,第1期

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机译：用于反渗透 - 纳滤应用的分子筛中空纤维陶瓷膜。水处理技术计划报告，第40号

Silver decorated 2D nanosheets of GO and MoS2 serve as nanocatalyst for water treatment and antimicrobial applications as ascertained with molecular docking evaluation

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