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Rabbani SS, Mustafa H, Zafar A, Javaid S, Bakar MA, Nisar A, Liu Y, Karim S, Sun H, Hussain S, Zafar Z, Faiz Y, Faiz F, Yu Y, Ahmad M. Nickel foam supported hierarchical NiCo2S4@NiFe LDH heterostructures as highly efficient electrode for long cycling stability supercapacitor. Electrochim Acta 2023. [DOI: 10.1016/j.electacta.2023.142098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Ali F, Zafar A, Nisar A, Liu Y, Karim S, Faiz F, Zafar Z, Sun H, Hussain S, Faiz Y, Ali T, Javed S, Yu Y, Ahmad M. Development of MoS 2-ZnO heterostructures: an efficient bifunctional catalyst for the detection of glucose and degradation of toxic organic dyes. NEW J CHEM 2023. [DOI: 10.1039/d2nj04758f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The heterostructure catalyst MoS2-ZnO possesses binary properties and provides a novel platform for the remediation of environmental as well as health issues.
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Affiliation(s)
- Farhan Ali
- Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad, 44000, Pakistan
- School of Chemical and Materials Engineering National University of Sciences and Technology (NUST), Islamabad, 44000, Pakistan
| | - Amina Zafar
- Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad, 44000, Pakistan
- Central Analytical Facility Division, PINSTECH, Islamabad, 44000, Pakistan
| | - Amjad Nisar
- Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad, 44000, Pakistan
| | - Yanguo Liu
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, P. R. China
| | - Shafqat Karim
- Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad, 44000, Pakistan
| | - Faisal Faiz
- State Key Laboratory of Analytical Chemistry for Life Science, School of Chemistry & Chemical Engineering and Center of Materials Analysis, Nanjing University, Nanjing, 210023, China
| | - Zainab Zafar
- Experimental Physics Division, National Centre for Physics, Islamabad, 44000, Pakistan
| | - Hongyu Sun
- School of Resources and Materials, Northeastern University at Qinhuangdao, Qinhuangdao, 066004, P. R. China
| | - Shafqat Hussain
- Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad, 44000, Pakistan
| | - Yasir Faiz
- Chemistry Division, PINSTECH, Islamabad, 44000, Pakistan
| | - Tahir Ali
- Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad, 44000, Pakistan
| | - Sofia Javed
- School of Chemical and Materials Engineering National University of Sciences and Technology (NUST), Islamabad, 44000, Pakistan
| | - Yanlong Yu
- College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing, 163318, P. R. China
| | - Mashkoor Ahmad
- Nanomaterials Research Group, Physics Division, PINSTECH, Islamabad, 44000, Pakistan
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Amakali T, Živković A, Warwick MEA, Jones DR, Dunnill CW, Daniel LS, Uahengo V, Mitchell CE, Dzade NY, de Leeuw NH. Photocatalytic Degradation of Rhodamine B Dye and Hydrogen Evolution by Hydrothermally Synthesized NaBH4—Spiked ZnS Nanostructures. Front Chem 2022; 10:835832. [PMID: 35494625 PMCID: PMC9046778 DOI: 10.3389/fchem.2022.835832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 03/28/2022] [Indexed: 12/29/2022] Open
Abstract
Metal sulphides, including zinc sulphide (ZnS), are semiconductor photocatalysts that have been investigated for the photocatalytic degradation of organic pollutants as well as their activity during the hydrogen evolution reaction and water splitting. However, devising ZnS photocatalysts with a high overall quantum efficiency has been a challenge due to the rapid recombination rates of charge carriers. Various strategies, including the control of size and morphology of ZnS nanoparticles, have been proposed to overcome these drawbacks. In this work, ZnS samples with different morphologies were prepared from zinc and sulphur powders via a facile hydrothermal method by varying the amount of sodium borohydride used as a reducing agent. The structural properties of the ZnS nanoparticles were analysed by X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS) techniques. All-electron hybrid density functional theory calculations were employed to elucidate the effect of sulphur and zinc vacancies occurring in the bulk as well as (220) surface on the overall electronic properties and absorption of ZnS. Considerable differences in the defect level positions were observed between the bulk and surface of ZnS while the adsorption of NaBH4 was found to be highly favourable but without any significant effect on the band gap of ZnS. The photocatalytic activity of ZnS was evaluated for the degradation of rhodamine B dye under UV irradiation and hydrogen generation from water. The ZnS nanoparticles photo-catalytically degraded Rhodamine B dye effectively, with the sample containing 0.01 mol NaBH4 being the most efficient. The samples also showed activity for hydrogen evolution, but with less H2 produced compared to when untreated samples of ZnS were used. These findings suggest that ZnS nanoparticles are effective photocatalysts for the degradation of rhodamine B dyes as well as the hydrogen evolution, but rapid recombination of charge carriers remains a factor that needs future optimization.
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Affiliation(s)
- Theopolina Amakali
- Department of Physics, Chemistry and Material Science, University of Namibia, Windhoek, Namibia
| | - Aleksandar Živković
- School of Chemistry, Cardiff University, Cardiff, United Kingdom
- Department of Earth Sciences, Utrecht University, Utrecht, Netherlands
- *Correspondence: Aleksandar Živković,
| | | | - Daniel R. Jones
- Energy Safety Research Institute, Swansea University, Swansea, United Kingdom
| | - Charles W. Dunnill
- Energy Safety Research Institute, Swansea University, Swansea, United Kingdom
| | - Likius S. Daniel
- Department of Physics, Chemistry and Material Science, University of Namibia, Windhoek, Namibia
- Multidisciplinary Research, Centre for Research Service, University of Namibia, Windhoek, Namibia
| | - Veikko Uahengo
- Department of Physics, Chemistry and Material Science, University of Namibia, Windhoek, Namibia
| | | | - Nelson Y. Dzade
- School of Chemistry, Cardiff University, Cardiff, United Kingdom
| | - Nora H. de Leeuw
- School of Chemistry, Cardiff University, Cardiff, United Kingdom
- Department of Earth Sciences, Utrecht University, Utrecht, Netherlands
- School of Chemistry, University of Leeds, Leeds, United Kingdom
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Chen J, Jing Q, Xu Y, Lin Y, Mai Y, Chen L, Wang G, Chen Z, Deng L, Chen J, Yuan C, Jiang L, Xu P, Huang M. Functionalized zinc oxide microparticles for improving the antimicrobial effects of skin-care products and wound-care medicines. BIOMATERIALS ADVANCES 2022; 135:212728. [PMID: 35929206 DOI: 10.1016/j.bioadv.2022.212728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 02/16/2022] [Accepted: 02/19/2022] [Indexed: 06/15/2023]
Abstract
ZnO is an important component in skin-protection products and wound-care medicines. However, ZnO's antibacterial activity is moderate. We developed two types of ZnO microparticles loading with phthalocyanine-type photosensitizers (ZnO/PSs) introducing the photodynamic effects. These photosensitive ZnO microparticles exhibited long-term while moderate antimicrobial effects by continuously releasing Zn2+ ions. The antimicrobial efficacies were remarkably enhanced by triggering the photodynamic antimicrobial effects. Compared to the sole ZnO which showed non-measurable antimicrobial activity at a concentration of 10 mg/L, both ZnO/PSs demonstrated antimicrobial rates ranged 99%-99.99% against Escherichia coli, normal and drug-resistant Staphylococcus aureus. In a dorsal wound infection mouse model, treatment with ZnO/PSs significantly accelerated the wound recovery rates. ZnO/PSs promoted wound healing by a dual effect: 1) the release of Zn2+ ions from ZnO facilitating tissue remodeling; 2) the photodynamic effect efficiently eliminates pathogens avoiding infection. Notably, ZnO/PSs inherited the high biosafety of ZnO without causing noticeable toxicity against erythrocyte and endothelial cells. This study not only provides a highly safe and efficient antimicrobial ZnO material for skin cares and wound modulations, but also proposes a strategy to functionalize ZnO materials.
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Affiliation(s)
- Jingyi Chen
- College of Chemistry, Fuzhou University, Fujian 350116, China
| | - Qian Jing
- College of Chemistry, Fuzhou University, Fujian 350116, China
| | - Yuanjie Xu
- College of Chemistry, Fuzhou University, Fujian 350116, China
| | - Yuxin Lin
- College of Chemistry, Fuzhou University, Fujian 350116, China
| | - Yuhan Mai
- College of Chemistry, Fuzhou University, Fujian 350116, China
| | - Liyun Chen
- College of Chemistry, Fuzhou University, Fujian 350116, China
| | - Guodong Wang
- College of Chemistry, Fuzhou University, Fujian 350116, China
| | - Zheng Chen
- College of Chemistry, Fuzhou University, Fujian 350116, China
| | - Lina Deng
- College of Chemistry, Fuzhou University, Fujian 350116, China
| | - Jincan Chen
- State Key Laboratory of Structural Chemistry and Danish-Chinese Centre for Proteases and Cancer, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Cai Yuan
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian 350116, China
| | - Longguang Jiang
- College of Chemistry, Fuzhou University, Fujian 350116, China
| | - Peng Xu
- College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian 350116, China.
| | - Mingdong Huang
- College of Chemistry, Fuzhou University, Fujian 350116, China; College of Biological Science and Engineering, Fuzhou University, Fuzhou, Fujian 350116, China.
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