1
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Paul S, Daga P, Dey N. Exploring Various Photochemical Processes in Optical Sensing of Pesticides by Luminescent Nanomaterials: A Concise Discussion on Challenges and Recent Advancements. ACS OMEGA 2023; 8:44395-44423. [PMID: 38046331 PMCID: PMC10688216 DOI: 10.1021/acsomega.3c02753] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 08/07/2023] [Accepted: 08/10/2023] [Indexed: 12/05/2023]
Abstract
Food safety is a burning global issue in this present era. The prevalence of harmful food additives and contaminants in everyday food is a significant cause for concern as they can adversely affect human health. More particularly, among the different food contaminants, the use of excessive pesticides in agricultural products is severely hazardous. So, the optical detection of residual pesticides is an effective strategy to counter the hazardous effect and ensure food safety. In this perspective, nanomaterials have played a leading role in defending the open threat against food safety instigated by the reckless use of pesticides. Now, nanomaterial-based optical detection of pesticides has reached full pace and needs an inclusive discussion. This Review covers the advancement of photoprocess-based optical detection of pesticides categorically using nanomaterials. Here, we have thoroughly dissected the photoprocesses (aggregation and aggregation-induced emission (AIE), charge transfer and intramolecular charge transfer (ICT), electron transfer and photoinduced electron transfer (PET), fluorescence resonance energy transfer (FRET), hydrogen bonding, and inner filter effect) and categorically demarcated their significant role in the optical detection of pesticides by luminescent nanomaterials over the last few years.
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Affiliation(s)
- Suvendu Paul
- Department
of Chemistry, BITS-Pilani Hyderabad Campus, Shameerpet, Hyderabad, Telangana 500078, India
| | - Pooja Daga
- Department
of Chemistry, Siksha-Bhavana, Visva-Bharati
University, Santiniketan, West Bengal 731235, India
| | - Nilanjan Dey
- Department
of Chemistry, BITS-Pilani Hyderabad Campus, Shameerpet, Hyderabad, Telangana 500078, India
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2
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Sathishkumar K, Naraginti S, Lavanya K, Zhang F, Ayyamperumal R, Liu X. Intimate coupling of gC 3N 4/CdS semiconductor on eco-friendly biocarrier loofah sponge for enhanced detoxification of ciprofloxacin. ENVIRONMENTAL RESEARCH 2023; 235:116558. [PMID: 37437864 DOI: 10.1016/j.envres.2023.116558] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 06/23/2023] [Accepted: 07/03/2023] [Indexed: 07/14/2023]
Abstract
Ciprofloxacin is one of the antibiotics predominantly used to treat bacterial infections, however excess usage, and release of antibiotic from various sources to the environment can cause severe risks to human health since it was considered as emerging pollutant. This study deals with the intimately coupled photocatalysis and biodegradation (ICPB) of ciprofloxacin using gC3N4/CdS photocatalytic semiconductor and eco-friendly renewable loofah sponge as biocarrier in the ICPB. The photocatalyst gC3N4/CdS was prepared and their synergistic photocatalytic degradation of ciprofloxacin were assessed and the results shows that gC3N4/CdS (20%) exhibit 79% degradation efficiency in 36 h. Further ICPB exhibited enhanced ciprofloxacin degradation 95% at 36 h. The 62.4% and 81.1% of chemical oxygen demand (COD) removal was obtained in the photocatalysis and ICPB respectively. Enhanced degradation of ciprofloxacin and COD removal was due to the synergetic photoelectrons generated from the gC3N4/CdS (20%) transferred to the bacterial communities which intensely mineralize the degradation products produced from the photocatalysis process. Furthermore, production of hydroxyl •OH and superoxide radical anion O2• were identified actively involved in the degradation of ciprofloxacin. The biocarrier loofah sponge provided favourable environment to the bacterial communities for the formation of biofilm and production of extracellular polymeric substances (EPS). Excess quantity of EPS production in the ICPB helps in the prevention of toxicity of photocatalyst to bacterial communities as well as facilitate the extracellular electron transfer process. This work provides a novel path for enhanced degradation of ciprofloxacin using eco-friendly, low cost and renewable biocarrier loofah sponge in the ICPB system.
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Affiliation(s)
- Kuppusamy Sathishkumar
- School of Physics and Electronic Information, Yan'an University, Yan'an 716000, China; Rhizosphere Biology Laboratory, Department of Microbiology, Bharathidasan University, Tiruchirappalli, Tamil Nadu 620 024, India
| | | | - Kubendiran Lavanya
- Department of Environmental Science, School of Life Sciences, Periyar University, Salem, Tamil Nadu 636 011, India
| | - Fuchun Zhang
- School of Physics and Electronic Information, Yan'an University, Yan'an 716000, China.
| | - Ramamoorthy Ayyamperumal
- Key Laboratory of Western China's Environmental System, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, 730000, China
| | - Xinghui Liu
- School of Physics and Electronic Information, Yan'an University, Yan'an 716000, China; Department of Materials Physics, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences (SIMTS), Thandalam, Chennai, 602105, Tamil Nadu, India; Department of Chemistry, Sungkyunkwan University (SKKU), 2066 Seoburo, Jangan-Gu, Suwon 16419, Republic of Korea.
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3
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Patel S, Shrivas K, Sinha D, Karbhal I, Patle TK. A portable smartphone-assisted digital image fluorimetry for analysis of methiocarb pesticide in vegetables: Nitrogen-doped carbon quantum dots as a sensing probe. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 299:122824. [PMID: 37192578 DOI: 10.1016/j.saa.2023.122824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/17/2023] [Revised: 04/21/2023] [Accepted: 05/03/2023] [Indexed: 05/18/2023]
Abstract
The increasing use of pesticides in the agriculture fields strengthen the crop production to meet the needs of increasing population. The residues in water and food materials cause several health hazards. Herein, nitrogen-doped carbon quantum dot (N-CQDs) is designed for determination of methiocarb pesticide in vegetables by fluorescent paper sensor and compared the results with fluorimetry. The fluorescent paper-based detection is performed by recording the change in fluorescence of N-CQDs with introduction of methiocarb using smartphone and ImageJ software. Good linear range was acquired for analysis of methiocarb from 10 to 1000 μgL-1 with a low detection limit (LOD) of 3.5 μgL-1 in fluorimetry; and 700-10,000 μgL-1 with a LOD of 500 μgL-1 in fluorescent paper sensor. A better recovery from 92.0 to 95.4% illustrating the selectivity of both methods for analysis of methiocarb in vegetables. Thus, the advantage of using N-CQDs as a fluorescent sensor for analysis of methiocarb in vegetables is instrument free, portable and user-friendly.
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Affiliation(s)
- Sanyukta Patel
- Department of Chemistry, Government Nagarjuna Post Graduate College of Science, Raipur, CG 492010, India
| | - Kamlesh Shrivas
- School of Studies in Chemistry, Pt. Ravishanakar Shukla University, Raipur 492010, CG, India.
| | - Deepak Sinha
- Department of Chemistry, Government Nagarjuna Post Graduate College of Science, Raipur, CG 492010, India.
| | - Indrapal Karbhal
- School of Studies in Chemistry, Pt. Ravishanakar Shukla University, Raipur 492010, CG, India
| | - Tarun Kumar Patle
- Department of Chemistry, Pt. Sundarlal Sharma Open University, Bilaspur 495009, Chhattisgarh, India
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4
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Optical and structural properties of Ni-doped Cd0.9Zn0.1S nanostructures. Int J Health Sci (Qassim) 2022. [DOI: 10.53730/ijhs.v6ns1.6192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The present work describes the synthesis of Cd0.9Zn0.1S and Cd0.87Zn0.1Ni0.03S by chemical co-precipitation method. The XRD profile proved the cubic crystal structure of the samples without any impurity related phases. The reduced size from 63 to 51 Å has been discussed by Ni addition in Cd0.87Zn0.1Ni0.03S structure. The noticed anomalous optical studies and the elevated transmittance at Ni doped sample suggested them for the fabrication of efficient opto-electronic devices. The energy gap reduction during the substitution of Ni = 3% is explained by the generation of extra energy levels associated with defects within the two bands.
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5
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Van KN, Huu HT, Nguyen Thi VN, Thi Le TL, Hoang QD, Dinh QV, Vo V, Tran DL, Vasseghian Y. Construction of S-scheme CdS/g-C 3N 4 nanocomposite with improved visible-light photocatalytic degradation of methylene blue. ENVIRONMENTAL RESEARCH 2022; 206:112556. [PMID: 34951992 DOI: 10.1016/j.envres.2021.112556] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 12/08/2021] [Accepted: 12/09/2021] [Indexed: 06/14/2023]
Abstract
Within moderate band gap, g-C3N4 and CdS are both promising visible light driven photocatalysts. However, their intrinsic high recombination rate of photo-induced electron-hole pairs along with the poor susceptibility in photocorrosion of CdS is main limitations hindering their practical application. In this study, the CdS/g-C3N4 composites with various weight ratios of CdS to g-C3N4 were solvothermal prepared from the dispersion of components, g-C3N4 and CdS, in ethanol. The physicochemical characterizations demonstrate the success in the fabrication of well-dispersed CdS nanoparticles in the g-C3N4 matrix. The enhanced photocatalytic activity of the g-C3N4/CdS composite over the degradation of methylene blue under visible light was ascribed to the effective photo-induced electron-hole separation via the step scheme (S-scheme) pathway in which the main contribution of high oxidative hydroxyl radicals (•OH) was demonstrated. Furthermore, via S-scheme model, we also clarify the depletion of photo-induced holes on CdS which is ascribed as the reason for improvement in resistance to photocorrosion of composites.
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Affiliation(s)
- Kim Nguyen Van
- Faculty of Natural Sciences, Quy Nhon University, Quy Nhon, 55000, Binh Dinh, Viet Nam.
| | - Ha Tran Huu
- Faculty of Natural Sciences, Quy Nhon University, Quy Nhon, 55000, Binh Dinh, Viet Nam
| | - Viet Nga Nguyen Thi
- Faculty of Education, Quy Nhon University, Quy Nhon, 55000, Binh Dinh, Viet Nam
| | - Thanh-Lieu Thi Le
- Faculty of Natural Sciences, Quy Nhon University, Quy Nhon, 55000, Binh Dinh, Viet Nam
| | - Quoc Dat Hoang
- Vietnam Ministry of Science and Technology, 113 Tran Duy Hung, Cau Giay, Hanoi, 10000, Viet Nam
| | - Quoc Viet Dinh
- Faculty of Natural Sciences, Quy Nhon University, Quy Nhon, 55000, Binh Dinh, Viet Nam
| | - Vien Vo
- Faculty of Natural Sciences, Quy Nhon University, Quy Nhon, 55000, Binh Dinh, Viet Nam.
| | - Dai Lam Tran
- Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Viet Nam
| | - Yasser Vasseghian
- Department of Chemical Engineering, Quchan University of Technology, Quchan, Iran
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6
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Solid-State Thermolysis of 1D and 3D Cd-Coordination Polymers of l-methionine Derived Ligand to CdS Nanospheres: Facile Synthesis, Charecterization and Dye degredation Studies. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130817] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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7
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Jothi S, Ganesh RC, Muthukumaran S, Rathiha SK, Seenivasan RK. Enhanced Photo-Catalytic and Antibacterial Properties of Ni-Doped Cd 0.9Zn 0.1S Nanostructures. J Inorg Organomet Polym Mater 2021; 32:297-310. [PMID: 34642581 PMCID: PMC8496631 DOI: 10.1007/s10904-021-02120-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Accepted: 10/01/2021] [Indexed: 11/08/2022]
Abstract
The present work describe the synthesis of Cd0.9Zn0.1S and Cd0.87Zn0.1Ni0.03S nanostructures by chemical co-precipitation method. The XRD profile proved the cubic crystal structure of the samples without any impurity related phases. The reduced size from 63 to 51 Å and the dissimilarities in lattice parameters and micro-strain has been discussed by Ni addition in Cd0.87Zn0.1Ni0.03S structure. The noticed anomalous optical studies and the elevated transmittance at Ni doped sample suggested them for the fabrication of efficient opto-electronic devices. The energy gap reduction during the substitution of Ni = 3% is explained by the generation of extra energy levels associated with defects within the two bands. The release of additional charge carriers, improved optical property, reduced particle size and more defect generation are responsible for the enhanced photo-catalytic performance of Ni doped Cd0.9Zn0.1S. The enhanced anti-bacterial capacity in Cd0.87Zn0.1Ni0.03S is described by the collective response of reduced particle size and higher reactive oxygen species (ROS) like O2 ⋅- , H2O2 and OH ⋅ generating capacity.
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Affiliation(s)
- S. Jothi
- Department of Chemistry, Government Arts College for Women, Sivagangai, Tamilnadu 630 562 India
| | - Rane Caroleena Ganesh
- Department of Chemistry, Sidharth College, Badlapur, University of Mumbai, Mumbai, Maharashtra India
| | - S. Muthukumaran
- PG & Research Department of Physics, Government Arts College, Melur, Madurai, Tamilnadu 625106 India
| | - S. K. Rathiha
- PG & Research Department of Physics, Government Arts College, Melur, Madurai, Tamilnadu 625106 India
| | - R. K. Seenivasan
- Department of Chemistry, Government Arts College, Melur, Madurai, Tamilnadu 625106 India
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8
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Sharma S, Kumar D, Khare N. Hierarchical PANI/CdS nanoarchitecture system for visible light induced photocatalytic dye degradation and photoelectrochemical water splitting. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.124117] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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9
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Levine M. Fluorescence-Based Sensing of Pesticides Using Supramolecular Chemistry. Front Chem 2021; 9:616815. [PMID: 33937184 PMCID: PMC8085505 DOI: 10.3389/fchem.2021.616815] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/11/2021] [Indexed: 01/02/2023] Open
Abstract
The detection of pesticides in real-world environments is a high priority for a broad range of applications, including in areas of public health, environmental remediation, and agricultural sustainability. While many methods for pesticide detection currently exist, the use of supramolecular fluorescence-based methods has significant practical advantages. Herein, we will review the use of fluorescence-based pesticide detection methods, with a particular focus on supramolecular chemistry-based methods. Illustrative examples that show how such methods have achieved success in real-world environments are also included, as are areas highlighted for future research and development.
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Affiliation(s)
- Mindy Levine
- Ariel University, Department of Chemical Sciences, Ariel, Israel
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10
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Effects of CdS Nanoparticles on the Physical Properties of T-CdS Nanocomposite Materials. J Inorg Organomet Polym Mater 2021. [DOI: 10.1007/s10904-020-01722-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Choi SK. Nanomaterial-Enabled Sensors and Therapeutic Platforms for Reactive Organophosphates. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:224. [PMID: 33467113 PMCID: PMC7830340 DOI: 10.3390/nano11010224] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Revised: 12/29/2020] [Accepted: 01/14/2021] [Indexed: 01/15/2023]
Abstract
Unintended exposure to harmful reactive organophosphates (OP), which comprise a group of nerve agents and agricultural pesticides, continues to pose a serious threat to human health and ecosystems due to their toxicity and prolonged stability. This underscores an unmet need for developing technologies that will allow sensitive OP detection, rapid decontamination and effective treatment of OP intoxication. Here, this article aims to review the status and prospect of emerging nanotechnologies and multifunctional nanomaterials that have shown considerable potential in advancing detection methods and treatment modalities. It begins with a brief introduction to OP types and their biochemical basis of toxicity followed by nanomaterial applications in two topical areas of primary interest. One topic relates to nanomaterial-based sensors which are applicable for OP detection and quantitative analysis by electrochemical, fluorescent, luminescent and spectrophotometric methods. The other topic is directed on nanotherapeutic platforms developed as OP remedies, which comprise nanocarriers for antidote drug delivery and nanoscavengers for OP inactivation and decontamination. In summary, this article addresses OP-responsive nanomaterials, their design concepts and growing impact on advancing our capability in the development of OP sensors, decontaminants and therapies.
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Affiliation(s)
- Seok Ki Choi
- Michigan Nanotechnology Institute for Medicine and Biological Sciences, University of Michigan Medical School, Ann Arbor, MI 48109, USA;
- Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, MI 48109, USA
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12
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A resonance Rayleigh scattering and fluorescence quenching dual-channel sensor for sensitive detection of chitosan based on Eosin Y. Anal Bioanal Chem 2021; 413:1429-1440. [PMID: 33403425 DOI: 10.1007/s00216-020-03107-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Revised: 11/07/2020] [Accepted: 12/01/2020] [Indexed: 10/22/2022]
Abstract
The sensitive chitosan (CTS) detection methods based on the resonance Rayleigh scattering (RRS) quenching method and fluorescence quenching of Eosin Y were put forward. In the HAC-NaAC buffer solution, Eosin Y interacted with Triton X-100 to generate the binary complex which served as the RRS spectral probe. When CTS was interacted with the binary complex, the RRS intensity decreased with the increase of CTS. At the same time, the fluorescence intensity of Eosin Y decreased in the presence of Triton X-100, and the fluorescence intensity of "Eosin Y+Triton X-100" system further decreased when CTS was added. So it was further proved that there was a forming complex in "Eosin Y+Triton X100+CTS" system. The interaction was characterized by zeta potential, RRS, fluorescence spectrum, and UV-Vis spectroscopy. Under optimal conditions, there was a good linear relationship between the RRS decreased intensity (ΔI) and the concentration of CTS in the range of 0.05-1.30 μg/mL, with a regression equation of ΔI = 1325c + 73.66 and correlation coefficient (R2) of 0.9907. The detection limit was 0.0777 μg/mL. Likewise, the linear range of the fluorescence quenching was 0.03-1.30 μg/mL; the regression equation was ΔF = 1926c + 294.0 with R2 = 0.9800 under fluorescence quenching. The detection limit was 0.0601 μg/mL. Therefore, the dual-channel sensor for the determination of CTS was applied to the health products, and the results were satisfactory. The t test result showed that there was no statistical difference between the two methods.
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13
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Liu Y, Chen Y, Shi Y, Wan D, Chen J, Xiao S. Adsorption of toxic dye Eosin Y from aqueous solution by clay/carbon composite derived from spent bleaching earth. WATER ENVIRONMENT RESEARCH : A RESEARCH PUBLICATION OF THE WATER ENVIRONMENT FEDERATION 2021; 93:159-169. [PMID: 32564442 DOI: 10.1002/wer.1376] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 06/04/2020] [Accepted: 06/05/2020] [Indexed: 06/11/2023]
Abstract
The environmentally friendly clay/carbon composite (SBE/C) was prepared by one-step pyrolysis under N2 atmosphere at 700°C of spent bleaching earth (SBE) from the industrial waste of the refined oil industry. SBE/C was tested to remove anionic dye Eosin Y from aqueous water. The results revealed that SBE/C had larger specific surface area than SBE, and the equilibrium adsorption capacity of SBE/C (11.15 mg/g) was about 3 times than that of SBE (4.04 mg/g). The adsorption process was found to be exothermic and spontaneous. The adsorption capacity of SBE/C was independent on pH (5-12), and exhibits satisfactorily recyclable performance. Combined with characterization analysis, the adsorption mechanism likely includes electrostatic interaction, hydrogen bonding, hydrophobic interaction, halogen bonding, and π-π interaction. Overall, this exploration of SBE/C might open a window to the design of an efficient and low-cost adsorbent for Eosin Y dye elimination from wastewater. PRACTITIONER POINTS: The resource utilization of industrial waste SBE was achieved. SBE/C was synthesized and tested to adsorb Eosin Y for the first time. SBE/C had characteristics with porous structure and large surface area. pH had little effect on adsorption capacity of SBE/C for Eosin Y. SBE/C exhibited potential for dye elimination from wastewater.
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Affiliation(s)
- Yongde Liu
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, China
- Henan Combined Pollution Control Research Academician Workstation, Zhengzhou, China
| | - Yao Chen
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, China
| | - Yahui Shi
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, China
| | - Dongjin Wan
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, China
- Henan Combined Pollution Control Research Academician Workstation, Zhengzhou, China
| | - Jing Chen
- School of Environmental Engineering, Henan University of Technology, Zhengzhou, China
- Henan Combined Pollution Control Research Academician Workstation, Zhengzhou, China
| | - Shuhu Xiao
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China
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14
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Dey PC, Ingti B, Bhattacharjee A, Choudhury MD, Das R, Nath SS. Enhancement of antibacterial activity of synthesized ligand-free CdS nanocrystals due to silver doping. J Basic Microbiol 2020; 61:27-36. [PMID: 33164242 DOI: 10.1002/jobm.202000296] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 09/13/2020] [Accepted: 10/24/2020] [Indexed: 01/19/2023]
Abstract
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.
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Affiliation(s)
- Pijush C Dey
- Nano-Physics & Nanotechnology Research Lab, Department of Physics, Tripura University, Agartala, Tripura, India
| | - Birson Ingti
- Department of Microbiology, Assam University, Silchar, Assam, India
| | | | | | - Ratan Das
- Nano-Physics & Nanotechnology Research Lab, Department of Physics, Tripura University, Agartala, Tripura, India
| | - Siddhartha S Nath
- Central Instrumental Lab (CIL), Assam University, Silchar, Assam, India
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15
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Effective charge separation through the sulfur vacancy interfacial in n-CdO/p-CdS bulk heterojunction particle and its solar-induced hydrogen production. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.07.049] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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16
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Kuriakose AC, Nampoori V, Thomas S. Enhancement of optical properties in Neutral Red Dye through energy transfer from CdS Quantum Dots. Chem Phys Lett 2020. [DOI: 10.1016/j.cplett.2019.136851] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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17
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Liu Q, Wang H, Han P, Feng X. Fluorescent aptasensing of chlorpyrifos based on the assembly of cationic conjugated polymer-aggregated gold nanoparticles and luminescent metal–organic frameworks. Analyst 2019; 144:6025-6032. [DOI: 10.1039/c9an00943d] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fluorescent aptasensor of chlorpyrifos based on terbium(iii) based on metal–organic frameworks and PDDA-aggregated-gold nanoparticles.
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Affiliation(s)
- Qingju Liu
- Beijing Research Center for Agriculture Standards and Testing
- Beijing 100097
- China
- Risk Assessment Lab for Agro-products (Beijing)
- Ministry of Agriculture
| | - Hui Wang
- Beijing Research Center for Agriculture Standards and Testing
- Beijing 100097
- China
- Risk Assessment Lab for Agro-products (Beijing)
- Ministry of Agriculture
| | - Ping Han
- Beijing Research Center for Agriculture Standards and Testing
- Beijing 100097
- China
- Risk Assessment Lab for Agro-products (Beijing)
- Ministry of Agriculture
| | - Xiaoyuan Feng
- Beijing Research Center for Agriculture Standards and Testing
- Beijing 100097
- China
- Risk Assessment Lab for Agro-products (Beijing)
- Ministry of Agriculture
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18
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Li B, Zhang Y, Duanmu F, Shen Y, Shen Z, Zhong S. Eosin Y sensitized BiPO4 nanorods for bi-functionally enhanced visible-light-driven photocatalysis. Photochem Photobiol Sci 2019; 18:1408-1418. [DOI: 10.1039/c8pp00387d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Eosin Y sensitized BiPO4 nanorods enhanced the degradation efficiency of MB and 2,4-DCP compared to pristine BiPO4 by 46.7 and 10.5 fold with a 100% mineralization rate.
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Affiliation(s)
- Boyuan Li
- School of Materials Science and Engineering
- Key Laboratory of Advanced Ceramics and Machining Technology
- Ministry of Education
- Tianjin University
- Tianjin 300350
| | - Yuting Zhang
- School of Materials Science and Engineering
- Key Laboratory of Advanced Ceramics and Machining Technology
- Ministry of Education
- Tianjin University
- Tianjin 300350
| | - Fanpeng Duanmu
- School of Materials Science and Engineering
- Key Laboratory of Advanced Ceramics and Machining Technology
- Ministry of Education
- Tianjin University
- Tianjin 300350
| | - Yongtao Shen
- School of Materials Science and Engineering
- Key Laboratory of Advanced Ceramics and Machining Technology
- Ministry of Education
- Tianjin University
- Tianjin 300350
| | - Zhurui Shen
- School of Materials Science and Engineering
- Key Laboratory of Advanced Ceramics and Machining Technology
- Ministry of Education
- Tianjin University
- Tianjin 300350
| | - Shuhui Zhong
- School of Mathematics
- Tianjin University
- Tianjin 300350
- PR China
| |
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