Yasmeen Khan, Sajid Mahmood, Mohsin Javed, Sana Mansoor, Misbah Umar, Sammia Shahid, Ammar Zidan, Rabia Nawaz, Shahid Iqbal, Abd-ElAziem Farouk, Salman Aloufi, Hala M. Abdelmigid, Toheed Akhter
{"title":"设计一种环保的Co/MnS/S-g-C3N4纳米复合材料：革命性的光催化染料降解和抗菌效率","authors":"Yasmeen Khan, Sajid Mahmood, Mohsin Javed, Sana Mansoor, Misbah Umar, Sammia Shahid, Ammar Zidan, Rabia Nawaz, Shahid Iqbal, Abd-ElAziem Farouk, Salman Aloufi, Hala M. Abdelmigid, Toheed Akhter","doi":"10.1007/s10971-024-06592-6","DOIUrl":null,"url":null,"abstract":"<div><p>This study utilized an eco-friendly, simple, and cost-effective co-precipitation method to synthesize pure MnS and a series of Co/MnS nanoparticles (NPs) with varying cobalt contents (2%, 4%, 6%, 8%, and 10%). Thiourea was calcined at 552 °C to prepare S-g-C<sub>3</sub>N<sub>4</sub> (SCN) nanosheets. The optimal doped NPs were combined with S-g-C<sub>3</sub>N<sub>4</sub> to create a series of nanocomposites (10%, 30%, 50%, 70%, and 90%). The materials band gap (Eg) values were determined using Tauc plots. Photodegradation of MB dye was conducted with a UV-Vis spectrophotometer. According to the best of our knowledge, Sulfur-doped graphitic carbon nitride (S-g-C₃N₄) has been used for the first time in combination with cobalt and manganese sulfide nanoparticles to synergistically enhance visible-light photocatalytic activity, enabling efficient degradation of a toxic organic dye methylene blue. Besides photocatalytic treatment, the antibacterial results reveal that (Co /MnS/ S-g-C₃N₄) effectively destroyed bacteria with a synergy effect among cobalt elements, MnS and S-g-C₃N₄. Results indicated that doping 6% cobalt into the MnS lattice enhanced photocatalytic oxidation/reduction. The highest photodegradation performance was observed in 6% Co/MnS@10% SCN nanocomposites, attributed to improved charge separation and reduced charge recombination. The synthesized nano-catalysts maintained significant degradation percentages even after three cycles. The structural morphologies of pure MnS, 6% Co/MnS, S-g-C<sub>3</sub>N<sub>4</sub>, and 6% Co/MnS@ 10% SCN nanocomposites were analyzed using XRD and FTIR. Kinetic studies of the prepared nanomaterials were conducted to determine their rate constants. The antibacterial performance of the best photocatalysts was tested against Bacillus subtilis and Escherichia coli. The results suggest that composite synthesis and doping enhanced the antibacterial activity of MnS, with the trend for antimicrobial activity being MnS < 6% Co/MnS < 6% Co/MnS@10% SCN.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":664,"journal":{"name":"Journal of Sol-Gel Science and Technology","volume":"113 1","pages":"145 - 158"},"PeriodicalIF":2.3000,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Designing an eco-friendly Co/MnS/S-g-C3N4 nanocomposites: revolutionizing photocatalytic dye degradation and antibacterial efficiency\",\"authors\":\"Yasmeen Khan, Sajid Mahmood, Mohsin Javed, Sana Mansoor, Misbah Umar, Sammia Shahid, Ammar Zidan, Rabia Nawaz, Shahid Iqbal, Abd-ElAziem Farouk, Salman Aloufi, Hala M. 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Designing an eco-friendly Co/MnS/S-g-C3N4 nanocomposites: revolutionizing photocatalytic dye degradation and antibacterial efficiency
This study utilized an eco-friendly, simple, and cost-effective co-precipitation method to synthesize pure MnS and a series of Co/MnS nanoparticles (NPs) with varying cobalt contents (2%, 4%, 6%, 8%, and 10%). Thiourea was calcined at 552 °C to prepare S-g-C3N4 (SCN) nanosheets. The optimal doped NPs were combined with S-g-C3N4 to create a series of nanocomposites (10%, 30%, 50%, 70%, and 90%). The materials band gap (Eg) values were determined using Tauc plots. Photodegradation of MB dye was conducted with a UV-Vis spectrophotometer. According to the best of our knowledge, Sulfur-doped graphitic carbon nitride (S-g-C₃N₄) has been used for the first time in combination with cobalt and manganese sulfide nanoparticles to synergistically enhance visible-light photocatalytic activity, enabling efficient degradation of a toxic organic dye methylene blue. Besides photocatalytic treatment, the antibacterial results reveal that (Co /MnS/ S-g-C₃N₄) effectively destroyed bacteria with a synergy effect among cobalt elements, MnS and S-g-C₃N₄. Results indicated that doping 6% cobalt into the MnS lattice enhanced photocatalytic oxidation/reduction. The highest photodegradation performance was observed in 6% Co/MnS@10% SCN nanocomposites, attributed to improved charge separation and reduced charge recombination. The synthesized nano-catalysts maintained significant degradation percentages even after three cycles. The structural morphologies of pure MnS, 6% Co/MnS, S-g-C3N4, and 6% Co/MnS@ 10% SCN nanocomposites were analyzed using XRD and FTIR. Kinetic studies of the prepared nanomaterials were conducted to determine their rate constants. The antibacterial performance of the best photocatalysts was tested against Bacillus subtilis and Escherichia coli. The results suggest that composite synthesis and doping enhanced the antibacterial activity of MnS, with the trend for antimicrobial activity being MnS < 6% Co/MnS < 6% Co/MnS@10% SCN.
期刊介绍：
The primary objective of the Journal of Sol-Gel Science and Technology (JSST), the official journal of the International Sol-Gel Society, is to provide an international forum for the dissemination of scientific, technological, and general knowledge about materials processed by chemical nanotechnologies known as the "sol-gel" process. The materials of interest include gels, gel-derived glasses, ceramics in form of nano- and micro-powders, bulk, fibres, thin films and coatings as well as more recent materials such as hybrid organic-inorganic materials and composites. Such materials exhibit a wide range of optical, electronic, magnetic, chemical, environmental, and biomedical properties and functionalities. Methods for producing sol-gel-derived materials and the industrial uses of these materials are also of great interest.
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