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Bisht NS, Tripathi AH, Pant M, Kumar Upadhyay S, Sahoo NG, Mehta SPS, Dandapat A. A facile synthesis of palladium nanoparticles decorated bismuth oxybromide nanostructures with exceptional photo-antimicrobial activities. Colloids Surf B Biointerfaces 2022; 217:112640. [PMID: 35752021 DOI: 10.1016/j.colsurfb.2022.112640] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 05/30/2022] [Accepted: 06/12/2022] [Indexed: 02/06/2023]
Abstract
Assessing the interaction between microbes and nanocatalysts for finding an inclusive, proactive and deep understanding of nanoparticles-based toxicity is vital for discovering their broad range of applications. Palladium based photocatalysts owing to their unique fundamental characteristics and brilliant physicochemical potential have gained immense interest in environment remediation as disinfection system. In the present study, we report synthesis of a novel palladium nanoparticles decorated bismuth oxybromide (Pd/BiOBr) nanostructures using an energy efficient solution-based method, having excellent photocatalytic antibacterial action. The synthesized nanomaterials was thoroughly characterized using various analytical techniques. The photocatalytic antibacterial efficiency of Pd/BiOBr was evaluated against some common pathogenic strains of Gram-positive and Gram-negative bacteria (Pseudomonas fluorescens, Pseudomonas aeruginosa, Escherichia coli, Aeromonas salmonicida, Salmonella typhimurium, Klebsiella pneumoniae, Bacillus subtilis). In our results Pd/BiOBr showed excellent photocatalytic disinfection efficacy with > 99.9% bacterial inactivation. A very low concentration of Pd/BiOBr (0.5 µg/mL) effectively inhibited the bacterial growth in response to just 2 h of visible light irradiation, while 1 µg/mL of Pd/BiOBr completely killed all the tested bacterial strains proving their magnificent bactericidal potential. The developed materials with exceptional antibacterial broad range efficiency can be used in different photocatalytic disinfection systems including water purification systems, biofilm exclusion and combating differential antibiotic resistance.
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Affiliation(s)
- Narendra Singh Bisht
- Department of Chemistry, D.S.B Campus, Kumaun University, Nainital 260002, Uttarakhand
| | - Ankita H Tripathi
- Department of Biotechnology, Sir J. C. Bose Technical Campus, Bhimtal, Kumaun University, Nainital 263136, Uttarakhand
| | - Megha Pant
- Department of Biotechnology, Sir J. C. Bose Technical Campus, Bhimtal, Kumaun University, Nainital 263136, Uttarakhand
| | - Santosh Kumar Upadhyay
- Department of Biotechnology, Sir J. C. Bose Technical Campus, Bhimtal, Kumaun University, Nainital 263136, Uttarakhand
| | - Nanda Gopal Sahoo
- Department of Chemistry, D.S.B Campus, Kumaun University, Nainital 260002, Uttarakhand
| | - S P S Mehta
- Department of Chemistry, D.S.B Campus, Kumaun University, Nainital 260002, Uttarakhand
| | - Anirban Dandapat
- Department of Chemistry, D.S.B Campus, Kumaun University, Nainital 260002, Uttarakhand.
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Bera S, Sahoo S, Pal J, Dhara D. Effect of copolymer chain length and additives on the catalytic efficiency of thermo-sensitive block copolymer stabilized gold nanoparticles. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.125122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Eco-friendly synthesis of gold nanoparticles using carboxymethylated gum Cochlospermum gossypium (CMGK) and their catalytic and antibacterial applications. CHEMICAL PAPERS 2019. [DOI: 10.1007/s11696-019-00722-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Tsai TH, Yu CC, Liu YC, Yang KH. Effectively catalytic decomposition of acetaldehydes in spirits by using chitosan-capped gold nanoparticles. J Appl Polym Sci 2013. [DOI: 10.1002/app.39127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Herrera GM, Padilla AC, Hernandez-Rivera SP. Surface Enhanced Raman Scattering (SERS) Studies of Gold and Silver Nanoparticles Prepared by Laser Ablation. NANOMATERIALS (BASEL, SWITZERLAND) 2013; 3:158-172. [PMID: 28348328 PMCID: PMC5304923 DOI: 10.3390/nano3010158] [Citation(s) in RCA: 91] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2012] [Revised: 02/01/2013] [Accepted: 02/07/2013] [Indexed: 01/22/2023]
Abstract
Gold and silver nanoparticles (NPs) were prepared in water, acetonitrile and isopropanol by laser ablation methodologies. The average characteristic (longer) size of the NPs obtained ranged from 3 to 70 nm. 4-Aminobenzebethiol (4-ABT) was chosen as the surface enhanced Raman scattering (SERS) probe molecule to determine the optimum irradiation time and the pH of aqueous synthesis of the laser ablation-based synthesis of metallic NPs. The synthesized NPs were used to evaluate their capacity as substrates for developing more analytical applications based on SERS measurements. A highly energetic material, TNT, was used as the target compound in the SERS experiments. The Raman spectra were measured with a Raman microspectrometer. The results demonstrate that gold and silver NP substrates fabricated by the methods developed show promising results for SERS-based studies and could lead to the development of micro sensors.
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Affiliation(s)
- Gloria M Herrera
- ALERT-DHS Center of Excellence/Center for Chemical Sensors Development, University of Puerto Rico-Mayagüez, P.O. Box 9000, Mayaguez, PR 00681-9000, USA.
| | - Amira C Padilla
- ALERT-DHS Center of Excellence/Center for Chemical Sensors Development, University of Puerto Rico-Mayagüez, P.O. Box 9000, Mayaguez, PR 00681-9000, USA.
| | - Samuel P Hernandez-Rivera
- ALERT-DHS Center of Excellence/Center for Chemical Sensors Development, University of Puerto Rico-Mayagüez, P.O. Box 9000, Mayaguez, PR 00681-9000, USA.
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Wang W, Wang F, Kang Y, Wang A. Facile self-assembly of Au nanoparticles on a magnetic attapulgite/Fe3O4 composite for fast catalytic decoloration of dye. RSC Adv 2013. [DOI: 10.1039/c3ra41836g] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
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Ukiwe C, Mansouri A, Kwok DY. The dynamics of impacting water droplets on alkanethiol self-assembled monolayers with co-adsorbed CH3 and CO2H terminal groups. J Colloid Interface Sci 2005; 285:760-8. [PMID: 15837495 DOI: 10.1016/j.jcis.2004.12.027] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2004] [Accepted: 12/01/2004] [Indexed: 11/17/2022]
Abstract
The impact of water droplets (diameter 3.6 mm) at a fixed Weber number of 59 on solid surfaces with precisely tailored surface wettabilities was studied experimentally using a high-speed imaging camera at 2500 frames per second. Solid surface wettability was varied using four fractional mixtures of self-assembled monolayers of 1-octadecanethiol and 16-mercaptohexadecanoic acid. The surfaces so obtained are characterized for contact angle and chemical functionality using the axisymmetric drop shape analysis profile (ADSA-P) technique and Fourier transform infrared spectroscopy (FT-IR). Our results correlate the wetting effects of the impacting droplets with the surface energy and contact angle measurements of the tailored surfaces. Literature models for the maximum spreading diameter are employed and compared with those from our experiments. An equation is also proposed for the maximum spreading diameter which makes use of the correct contact angles and results in the least error among the models considered. As a consequence of Young's equation, the correct contact angles to be used for droplet impact dynamics should be the corresponding advancing angles on a smooth substrate of interest. We also conclude that accurate examination of literature models requires careful experimentation on impact dynamic data on well-prepared and characterized surfaces such as those presented here.
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Affiliation(s)
- Chijioke Ukiwe
- Nanoscale Technology and Engineering Laboratory, Department of Mechanical Engineering, University of Alberta, Edmonton, Alberta T6G 2G8, Canada
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Kwok DY, Lam CNC, Li A, Zhu K, Wu R, Neumann AW. Low-rate dynamic contact angles on polystyrene and the determination of solid surface tensions. POLYM ENG SCI 2004. [DOI: 10.1002/pen.10338] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Bateni A, Susnar S, Amirfazli A, Neumann A. A high-accuracy polynomial fitting approach to determine contact angles. Colloids Surf A Physicochem Eng Asp 2003. [DOI: 10.1016/s0927-7757(03)00053-0] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Dynamic Cycling Contact Angle Measurements: Study of Advancing and Receding Contact Angles. J Colloid Interface Sci 2001. [DOI: 10.1006/jcis.2001.7840] [Citation(s) in RCA: 64] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Lam C, Kim N, Hui D, Kwok D, Hair M, Neumann A. The effect of liquid properties to contact angle hysteresis. Colloids Surf A Physicochem Eng Asp 2001. [DOI: 10.1016/s0927-7757(01)00589-1] [Citation(s) in RCA: 121] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Kwok DY, Ng H, Neumann AW. Experimental Study on Contact Angle Patterns: Liquid Surface Tensions Less Than Solid Surface Tensions. J Colloid Interface Sci 2000; 225:323-328. [PMID: 11254269 DOI: 10.1006/jcis.2000.6749] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The interpretation of contact angles in terms of solid surface tensions is not trivial. In the past, we and others have postulated that contact angles should be measured with liquid of surface tension larger than the anticipated solid surface tension, i.e., gamma(lv)>gamma(sv). This has recently been disputed. It is also not entirely obvious how to proceed experimentally since gamma(sv) is not known initially. Typically, one starts with a liquid of high gamma(lv) (such as water) and goes lower. We have stopped in the past when the contact angles became small. A question arises as to what would happen if we would go on. Contact angles of liquids with gamma(lv) less than or near gamma(sv) were measured on eight polymer-coated solid surfaces. The experimental contact angle patterns for gamma(lv)<gamma(sv) and for gamma(lv)>gamma(sv) were compared. Results suggest that contact angle interpretation in terms of solid surface tensions requires contact angles to be measured for gamma(lv)>gamma(sv) because the Young equation is not applicable for gamma(lv)<gamma(sv). Thus contact angle approaches that disregard this requirement are questionable. Copyright 2000 Academic Press.
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Affiliation(s)
- Daniel Y. Kwok
- Department of Mechanical and Industrial Engineering, University of Toronto, 5 King's College Road, Toronto, Ontario, M5S 3G8, Canada
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Wulf M, Grundke K, Kwok DY, Neumann AW. Influence of different alkyl side chains on solid surface tension of polymethacrylates. J Appl Polym Sci 2000. [DOI: 10.1002/1097-4628(20000912)77:11<2493::aid-app19>3.0.co;2-h] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kwok DY, Li A, Neumann AW. Low-rate dynamic contact angles on poly(methyl methacrylate/ethyl methacrylate, 30/70) and the determination of solid surface tensions. ACTA ACUST UNITED AC 1999. [DOI: 10.1002/(sici)1099-0488(19990815)37:16<2039::aid-polb8>3.0.co;2-o] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Contact angle measurements by axisymmetric drop shape analysis and an automated polynomial fit program. Colloids Surf A Physicochem Eng Asp 1998. [DOI: 10.1016/s0927-7757(98)00257-x] [Citation(s) in RCA: 49] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kwok D, Lam C, Li A, Leung A, Wu R, Mok E, Neumann A. Measuring and interpreting contact angles: a complex issue. Colloids Surf A Physicochem Eng Asp 1998. [DOI: 10.1016/s0927-7757(98)00354-9] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kwok DY, Leung A, Lam CNC, Li A, Wu R, Neumann AW. Low-Rate Dynamic Contact Angles on Poly(methyl methacrylate) and the Determination of Solid Surface Tensions. J Colloid Interface Sci 1998; 206:44-51. [PMID: 9761626 DOI: 10.1006/jcis.1998.5610] [Citation(s) in RCA: 75] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Low-rate dynamic contact angles of nine liquids on a poly(methyl methacrylate) (PMMA) polymer are measured by an automated axisymmetric drop shape analysis-profile (ADSA-P). It is found that two liquids dissolved the polymer on contact. From the experimental contact angles of the other seven polar and nonpolar liquids, it is found that the liquid-vapor surface tension times cosine of the contact angle changes smoothly with the liquid-vapor surface tension (i.e., gammalnucos theta depends only on gammalnu for a given solid surface). The dependence of gammalnucos theta on gammasnu is explicitly illustrated by replacing the solid surface from the PMMA to other methacrylate polymers: such a procedure shifts the curves in a very regular manner. Thus, because of Young's equation, gammasl depends only on gammalnu and gammasnu. This contact angle pattern is in harmony with those from other inert and noninert (polar and nonpolar) surfaces. The solid-vapor surface tension of PMMA calculated from the equation of state approach for solid-liquid interfacial tensions is found to be 38.5 mJ/m2, with a 95% confidence limit of +/-0.5 mJ/m2 from the experimental contact angles of the seven liquids. Copyright 1998 Academic Press.
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Affiliation(s)
- DY Kwok
- Department of Mechanical and Industrial Engineering, University of Toronto, Toronto, Ontario, M5S 3G8, Canada
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