Tuning of optical, thermal and antimicrobial capabilities of CdS nanoparticles with incorporated Mn prepared by chemical method

Patel, Naresh K.; Deshpande, M. P.; Chaki, Sunil H.; Keharia, Haresh

doi:10.1007/s10854-017-6865-y

Cited by 17 publications

(13 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…On one hand, the addition of heteroatom will create new energy levels in the band structure causing the band gap changes of TMSs; on the other hand, the doped atoms can be dissolved during practical applications which might also play a positive role in enhancing the antibacterial performances [171,172]. Fakhri [174]. In recent years, carbon materials such as carbon quantum dots (CQDs), grapheme, and carbon nanotubes have also be utilized to hybridize TMSs for enhanced bactericidal effect due to their good photostability, low cytotoxicity, and excellent conductivity [60,69,[175][176][177][178].…”

Section: Other Strategiesmentioning

confidence: 99%

Shining light on transition metal sulfides: New choices as highly efficient antibacterial agents

Han

Yang

et al. 2021

Nano Res.

View full text Add to dashboard Cite

Globally, millions of people die of microbial infection-related diseases every year. The more terrible situation is that due to the overuse of antibiotics, especially in developing countries, people are struggling to fight with the bacteria variation. The emergence of super-bacteria will be an intractable environmental and health hazard in the future unless novel bactericidal weapons are mounted. Consequently, it is critical to develop viable antibacterial approaches to sustain the prosperous development of human society. Recent researches indicate that transition metal sulfides (TMSs) represent prominent bactericidal application potential owing to the meritorious antibacterial performance, acceptable biocompatibility, high solar energy utilization efficiency, and excellent photo-to-thermal conversion characteristics, and thus, a comprehensive review on the recent advances in this area would be beneficial for the future development. In this review article, we start with the antibacterial mechanisms of TMSs to provide a preliminary understanding. Thereafter, the state-of-the-art research progresses on the strategies for TMSs materials engineering so as to promote their antibacterial properties are systematically surveyed and summarized, followed by a summary of the practical application scenarios of TMSs-based antibacterial platforms. Finally, based on the thorough survey and analysis, we emphasize the challenges and future development trends in this area.

show abstract

Section: Other Strategiesmentioning

confidence: 99%

Shining light on transition metal sulfides: New choices as highly efficient antibacterial agents

Han

Yang

et al. 2021

Nano Res.

View full text Add to dashboard Cite

show abstract

“…Wali et al [44] reported the antibacterial activity of CdS and Au/CdS nanoparticles on E. coli for concentration higher than 800 µg/ml. Patel et al [45] also reported the antibacterial activity of CdS and Mn-doped CdS nanoparticles and observed that CdS nanoparticles show activity against E. coli for concentration higher than 1 mg/ml. Compared to these reports, it has been observed in the present study that at very low concentrations, CdS nanocrystal is ineffective against E. coli but very effective against S. aureus.…”

Section: Discussionmentioning

confidence: 99%

Enhancement of antibacterial activity of synthesized ligand‐free CdS nanocrystals due to silver doping

et al. 2020

View full text Add to dashboard Cite

Recently, different nanocrystals have been reported to be the alternative, optimistic, and novel antimicrobial agent against the many antibiotic‐resistant bacteria. Here, ligand‐free CdS and Ag‐doped CdS (Ag/CdS) nanocrystals have been synthesized by chemical methods for the study of the antimicrobial activity on Escherichia coli and Staphylococcus aureus by Kirby–Bauer diffusion method to see the effect against Gram‐positive and Gram‐negative bacteria. These prepared nanocrystals have been characterized by transmission electron microscopy (TEM), scanning electron microscopy (SEM), and X‐ray diffraction (XRD). TEM and SEM images confirm the spherical morphology of both the sample and the respective XRD patterns indicate polycrystalline nature having a cubic zinc blende structure. Antibacterial activities have been tested with CdS and Ag/CdS, considering concentrations ranging from 10 to 200 μg/ml. After 24 h of incubation, the zone of inhibition (ZOI) is measured for each concentration, which shows that both the nanocrystals are ineffective against E. coli but much effective against S. aureus at this low concentration range. Furthermore, Ag/CdS nanocrystals have been found to show much more ZOI than CdS. Differences in the antibacterial activity can be due to the presence of different cell wall in E. coli and S. aureus.

show abstract

“…Для легирования ZnS и CdS широко применяются катионы Mn 2+ [13,15,17,36,37]. Их применение объясняется благоприятным структурным соответствием сульфидов цинка, кадмия и марганца, образованием рядов твердых растворов, а также различающейся растворимостью сульфидов матрицы (ZnS, CdS) и легирующего катиона Mn 2+ (MnS) в реакционных средах при проведении химического синтеза с использованием золь−гель технологий.…”

Section: Introductionunclassified

“…При селективном возбуждении в полосы поглощения ионов Mn 2+ (390, 435, 470, 496 и 535 нм) в кристаллах ZnS : Mn 2+ наблюдается только полоса " марганцевой" люминесценции [17]. Авторами работ [17, 36,37] показано, что независимо от концентрации ионов Mn 2+ при незначительном изменении положения полосы (в пределах 10 нм) может существенно измениться ее интенсивность. Это связано с особенностями переноса энергии между уровнями в неэквивалентных активаторных центрах, имеющих различное локальное окружение ионов Mn 2+ , которое, кроме прочих факторов, зависит от условий синтеза легированных кристаллов.…”

unclassified

“…Это связано с особенностями переноса энергии между уровнями в неэквивалентных активаторных центрах, имеющих различное локальное окружение ионов Mn 2+ , которое, кроме прочих факторов, зависит от условий синтеза легированных кристаллов. В композициях CdS : Mn 2+ за счет резонансного механизма передачи энергии возбуждаются " марганцевые" центры, локализованные на поверхности нанокристаллов CdS [37,43,44]. Композиции с наночастицами (Cd,Mn)S, синтезированные совместным осаждением сульфидов, проявляют стабильную и яркую фотолюминесценцию в области 600 нм.…”

unclassified

See 1 more Smart Citation

Синтез И Фотолюминесценция Наноразмерных Структур На Основе Сульфидов Цинка, Кадмия И Марганца В Полиакрилатной Матрице

Исаева¹,

Смагин²

2020

Физика И Техника Полупроводников

View full text Add to dashboard Cite

Photoluminescence of nanoscale structures based on zinc, cadmium and manganese sulfides depending on the conditions of synthesis and doping in the medium (poly)methylmethacrylate (PMMA). Photoluminescence excitation is associated with interband transitions of electrons in the semiconductor structures, absorption of optical radiation energy by defects in the crystal structure, as well as with the transfer of energy to the excited energy levels of Mn2+ ions. Luminescence occurs as a result of recombination processes at the levels of defects in the structure of the surface of particles and 4T1 → 6A1 transitions between the proper energy levels of Mn2+ ions. Based on changes in the photoluminescence spectra and photoluminescence excitation of PMMA/(Zn,Cd,Mn)S compositions, assumptions are made about the structure of particles. It is shown that their photoluminescence is affected by the distribution of Mn2+ ions in the structure of layers and on the surface of particles.

show abstract

Tuning of optical, thermal and antimicrobial capabilities of CdS nanoparticles with incorporated Mn prepared by chemical method

Cited by 17 publications

References 32 publications

Shining light on transition metal sulfides: New choices as highly efficient antibacterial agents

Shining light on transition metal sulfides: New choices as highly efficient antibacterial agents

Enhancement of antibacterial activity of synthesized ligand‐free CdS nanocrystals due to silver doping

Синтез И Фотолюминесценция Наноразмерных Структур На Основе Сульфидов Цинка, Кадмия И Марганца В Полиакрилатной Матрице

Contact Info

Product

Resources

About