1
|
Haque M, Kalita M, Chamlagai D, Lyndem S, Koley S, Kumari P, Aguan K, Singha Roy A. Human serum albumin directed formation of cadmium telluride quantum dots: Applications in biosensing, anti-bacterial activities and cell cytotoxicity measurements. Int J Biol Macromol 2024; 268:131862. [PMID: 38670183 DOI: 10.1016/j.ijbiomac.2024.131862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2023] [Revised: 04/22/2024] [Accepted: 04/23/2024] [Indexed: 04/28/2024]
Abstract
Although cadmium-based quantum dots (QDs) are highly promising candidates for numerous biological applications, their intrinsic toxicity limits their pertinency in living systems. Surface functionalization of QDs with appropriate molecules could reduce the toxicity level. Herein, we have synthesized the smaller sized (1-5 nm) aqueous-compatible biogenic CdTe QDs using human serum albumin (HSA) as a surface passivating agent via a greener approach. HSA-functionalized CdTe QDs have been explored in multiple in vitro sensing and biological applications, namely, (1) sensing, (2) anti-bacterial and (3) anti-cancer properties. Using CdTe-HSA QDs as a fluorescence probe, a simple fluorometric method has been developed for highly sensitive and selective detection of blood marker bilirubin and hazardous Hg2+ ion with a limit of detection (LOD) of 3.38 and 0.53 ng/mL, respectively. CdTe-HSA QDs also acts as a sensor for standard antibiotics, tetracycline and rifampicin with LOD values of 41.34 and 114.99 ng/mL, respectively. Nano-sized biogenic CdTe-HSA QDs have shown promising anti-bacterial activities against both gram-negative, E. coli and gram-positive, E. faecalis strains confirming more effectiveness against E. faecalis strains. The treatment of human cervical cancer cell lines (HeLa cells) with the synthesized QDs reflected the proficient cytotoxic properties of QDs.
Collapse
Affiliation(s)
- Mahabul Haque
- Department of Chemistry, National Institute of Technology Meghalaya, Shillong 793003, India
| | - Mitul Kalita
- Department of Chemistry, National Institute of Technology Meghalaya, Shillong 793003, India
| | - Dipak Chamlagai
- Department of Chemistry, North-Eastern Hill University, Shillong 793022, India
| | - Sona Lyndem
- Department of Chemistry, National Institute of Technology Meghalaya, Shillong 793003, India
| | - Sudipta Koley
- Department of Physics, Amity Institute of Applied Sciences, Amity University, Kolkata 700135, India
| | - Puja Kumari
- Department of Biotechnology & Bioinformatics, North-Eastern Hill University, Shillong 793022, India
| | - Kripamoy Aguan
- Department of Biotechnology & Bioinformatics, North-Eastern Hill University, Shillong 793022, India
| | - Atanu Singha Roy
- Department of Chemistry, National Institute of Technology Meghalaya, Shillong 793003, India.
| |
Collapse
|
2
|
Batur E, Kutluay S, Baytar O, Şahin Ö, Horoz S. Superior incident photon-to-current conversion efficiency of Mo-doped activated carbon supported CdS-sensitized solar cells. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:19766-19775. [PMID: 36239891 DOI: 10.1007/s11356-022-23552-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2022] [Accepted: 10/06/2022] [Indexed: 06/16/2023]
Abstract
In this study, the performance of activated carbon (AC) produced from defatted black cumin (Nigella sativa L.) by chemical activation with zinc chloride (ZnCl2) activator in photovoltaic application is evaluated. It is of great importance to increase the photovoltaic efficiency of cadmium sulfide (CdS)-based solar cells, which are widely used in photovoltaic applications, with AC support. The main purpose of the study is to determine how the incident photon-to-current conversion efficiency (IPCE) of undoped and Mo-doped AC supported CdS semiconductor materials changes in the presence of AC support material and to interpret the observed effect in the light of literature. For these reasons, in the study, AC supported CdS (CdS/AC) (5%, 10%, and 15% by weight) and Mo-doped CdS/AC semiconductor materials with different molybdenum (Mo) concentrations (0.33%, 1%, 3%) are produced by chemical precipitation method. Produced CdS/AC and Mo-doped CdS/AC semiconductor materials are characterized by IPCE, scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), and X-ray photoelectron spectroscopy (XPS) measurements. Based on the result values, the optimum CdS concentration with the highest IPCE (%) value is determined as 10% (for CdS/AC). As a result of the experimental measurements, the optimum Mo concentration with the maximum IPCE (%) value is found as 1% (for Mo-doped CdS/AC). In particular, it is clear that an appreciable increase (from 4.70 to 39.00%) in IPCE (%) of 1% Mo-doped 10% CdS/AC semiconductor material is achieved when compared to pure CdS. Thus, the ability to increase the photovoltaic efficiency of CdS-based solar cells, which are widely used in photovoltaic applications, with AC support has been clearly demonstrated. This study presents a new strategy to increase the solar cell efficiency of semiconductor-based solar cell structures using biowaste-based AC supported CdS semiconductor materials.
Collapse
Affiliation(s)
- Ebru Batur
- Department of Chemical Engineering, Faculty of Engineering, Siirt University, 56100, Siirt, Turkey
| | - Sinan Kutluay
- Department of Chemical Engineering, Faculty of Engineering, Siirt University, 56100, Siirt, Turkey
- Department of Chemical Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
| | - Orhan Baytar
- Department of Chemical Engineering, Faculty of Engineering, Siirt University, 56100, Siirt, Turkey
| | - Ömer Şahin
- Department of Chemical Engineering, Faculty of Chemical and Metallurgical Engineering, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
- Department of Chemistry, Faculty of Science and Letters, Istanbul Technical University, 34469, Maslak, Istanbul, Turkey
| | - Sabit Horoz
- Department of Metallurgical and Materials Engineering, Faculty of Engineering and Natural Sciences, Sivas University of Science and Technology, 58100, Sivas, Turkey.
| |
Collapse
|
3
|
Glutathione-Capped CdTe Quantum Dots Based Sensors for Detection of H 2O 2 and Enrofloxacin in Foods Samples. Foods 2022; 12:foods12010062. [PMID: 36613278 PMCID: PMC9818724 DOI: 10.3390/foods12010062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 12/08/2022] [Accepted: 12/12/2022] [Indexed: 12/24/2022] Open
Abstract
Additives and antibiotic abuse during food production and processing are among the key factors affecting food safety. The efficient and rapid detection of hazardous substances in food is of crucial relevance to ensure food safety. In this study, a water-soluble quantum dot with glutathione as a ligand was synthesized as a fluorescent probe by hydrothermal method to achieve the detection and analysis of H2O2. The detection limits were 0.61 μM in water and 68 μM in milk. Meanwhile, it was used as a fluorescent donor probe and manganese dioxide nanosheets were used as a fluorescent acceptor probe in combination with an immunoassay platform to achieve the rapid detection and analysis of enrofloxacin (ENR) in a variety of foods with detection limits of 0.05-0.25 ng/mL in foods. The proposed systems provided new ideas for the construction of fluorescence sensors with high sensitivity.
Collapse
|
4
|
Chung NTK, Nguyen PT, Tung HT, Phuc DH. Quantum Dot Sensitized Solar Cell: Photoanodes, Counter Electrodes, and Electrolytes. Molecules 2021; 26:2638. [PMID: 33946485 PMCID: PMC8125700 DOI: 10.3390/molecules26092638] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/25/2021] [Accepted: 04/27/2021] [Indexed: 11/16/2022] Open
Abstract
In this study, we provide the reader with an overview of quantum dot application in solar cells to replace dye molecules, where the quantum dots play a key role in photon absorption and excited charge generation in the device. The brief shows the types of quantum dot sensitized solar cells and presents the obtained results of them for each type of cell, and provides the advantages and disadvantages. Lastly, methods are proposed to improve the efficiency performance in the next researching.
Collapse
Affiliation(s)
- Nguyen Thi Kim Chung
- Thu Dau Mot University, Number 6, Tran Van on Street, Phu Hoa Ward, Thu Dau Mot 55000, Vietnam;
| | - Phat Tan Nguyen
- Department of Physics, Ho Chi Minh City University of Education, Ho Chi Minh City 70250, Vietnam;
| | - Ha Thanh Tung
- Faculty of Physics, Dong Thap University, Cao Lanh City 870000, Vietnam
| | - Dang Huu Phuc
- Laboratory of Applied Physics, Advanced Institute of Materials Science, Ton Duc Thang University, Ho Chi Minh City 70880, Vietnam
- Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 70880, Vietnam
| |
Collapse
|