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Gao H, Xing Z, Liu J, Chen X, Zhou N, Zheng Y, Tang L, Jin L, Gao J, Meng Z. Bioinspired Photoelectronic Synergy Coating with Antifogging and Antibacterial Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:10589-10599. [PMID: 38728854 DOI: 10.1021/acs.langmuir.4c00455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2024]
Abstract
Optically transparent glass with antifogging and antibacterial properties is in high demand for endoscopes, goggles, and medical display equipment. However, many of the previously reported coatings have limitations in terms of long-term antifogging and efficient antibacterial properties, environmental friendliness, and versatility. In this study, inspired by catfish and sphagnum moss, a novel photoelectronic synergy antifogging and antibacterial coating was prepared by cross-linking polyethylenimine-modified titanium dioxide (PEI-TiO2), polyvinylpyrrolidone (PVP), and poly(acrylic acid) (PAA). The as-prepared coating could remain fog-free under hot steam for more than 40 min. The experimental results indicate that the long-term antifogging properties are due to the water absorption and spreading characteristics. Moreover, the organic-inorganic hybrid of PEI and TiO2 was first applied to enhance the antibacterial performance. The Staphylococcus aureus and the Escherichia coli growth inhibition rates of the as-prepared coating reached 97 and 96% respectively. A photoelectronic synergy antifogging and antibacterial mechanism based on the positive electrical and photocatalytic properties of PEI-TiO2 was proposed. This investigation provides insight into designing multifunctional bioinspired surface materials to realize antifogging and antibacterial that can be applied to medicine and daily lives.
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Affiliation(s)
- Hanpeng Gao
- School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Zetian Xing
- School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Jiaxi Liu
- Key Laboratory of Bionic Engineering (Ministry of Education), Jilin University, Changchun 130022, P. R. China
| | - Xiaomin Chen
- Department of Nursing, First Hospital of Qinhuangdao, Qinhuangdao 066000, P. R. China
| | - Na Zhou
- Department of Nursing, First Hospital of Qinhuangdao, Qinhuangdao 066000, P. R. China
| | - Ying Zheng
- Department of Nursing, First Hospital of Qinhuangdao, Qinhuangdao 066000, P. R. China
| | - Lianlian Tang
- Department of Nursing, First Hospital of Qinhuangdao, Qinhuangdao 066000, P. R. China
| | - Liang Jin
- Department of Clinical Laboratory, First Hospital of Qinhuangdao, Qinhuangdao 066000, P. R. China
| | - Jun Gao
- Department of Nursing, First Hospital of Qinhuangdao, Qinhuangdao 066000, P. R. China
| | - Zong Meng
- School of Electrical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
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Jayan JS, Deeraj B, Joseph K, Saritha A. Designed and tailor-made double hydrophilic block copolymer-graphene nanoplatelet hybrids for reinforcing epoxy thermosets. Sci Rep 2024; 14:8812. [PMID: 38627569 PMCID: PMC11021408 DOI: 10.1038/s41598-024-59322-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 04/09/2024] [Indexed: 04/19/2024] Open
Abstract
Because of their propensity to build micellar nanostructures, amphiphilic block copolymers (ABCs) are an appropriate and unique toughening agent for epoxy systems individually on their own and in grafted form. The presence of epoxiphilic and phobic ends in ABCs is responsible for the self-assembly and the micellar structure. Nanofiller-grafted ABCs can effectively enhance the toughness of epoxy via the synergistic interaction of nanofillers and the ABCs. Even though there is sound literature supporting the effect of ABCs in epoxy, the action of double hydrophilic block copolymers (DHBC) in the epoxy matrix is less handled. Hence, the grafting of nanofillers in DHBCs and their subsequent role in tuning the properties of epoxy is a new concept. Hence this paper tries to bridge the gap via studying the effect of grafted fillers based on DHBCs in epoxy matrix. As a result, the current study focuses on the synthesis of double hydrophilic graphene nanoplatelets (rGO-g-DHBC) via nitrogen oxide-mediated polymerization for epoxy toughening application. The prepared rGO-g-DHBC was effectively utilized for epoxy toughening applications, resulting in a 457% improvement in toughness without compromising its inherent tensile strength. The mechanism behind the improved toughness was elucidated with the help of a scanning electron microscope, and the thermal, and rheological characteristics were studied.
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Affiliation(s)
- Jitha S Jayan
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, Kerala, India.
| | - Bds Deeraj
- Department of Chemistry, Indian Institute of Space Science and Technology Valiyamala, Thiruvananthapuram, Kerala, India
| | - Kuruvilla Joseph
- Department of Chemistry, Indian Institute of Space Science and Technology Valiyamala, Thiruvananthapuram, Kerala, India.
| | - Appukuttan Saritha
- Department of Chemistry, Amrita Vishwa Vidyapeetham, Amritapuri, Kollam, Kerala, India.
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Ghasemzadeh MS, Ahmadpour A. Design and synthesis of high performance magnetically separable exfoliated g-C 3N 4/γ-Fe 2O 3/ZnO yolk-shell nanoparticles: a novel and eco-friendly photocatalyst toward removal of organic pollutants from water. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:80162-80180. [PMID: 37294493 DOI: 10.1007/s11356-023-28113-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 06/01/2023] [Indexed: 06/10/2023]
Abstract
Herein, a new visible-light active exfoliated g-C3N4/γ-Fe2O3/ZnO yolk-shell nanoparticles (NPs) was synthesized as a magnetically separable photocatalyst. For an in-depth understanding of the magnetic photocatalyst's structural, morphological, and optical properties, the products were extensively characterized with FT-IR, XRD, TEM, HRTEM, FESEM, EDS, EDS-mapping, VSM, DRS, EIS, and photocurrent. The photocatalyst was then utilized to degrade Levofloxacin (LEVO) and Indigo Carmine (IC) by visible light at room temperature. The exfoliated g-C3N4/γ-Fe2O3/ZnO yolk-shell NPs photocatalyst revealed 80% and 95.6% degradation efficiency for Levofloxacin and Indigo Carmine within 25 and 15 min, respectively. In addition, the optimal factors such as concentration, loading of photocatalyst, and pH were also assessed. Levofloxacin degradation mechanistic studies showed that electrons and holes significantly contribute to the photocatalytic process of photocatalyst degradation. In addition, after 5 times regeneration, exfoliated g-C3N4/γ-Fe2O3/ZnO yolk-shell NPs remained as an excellent magnetic photocatalyst for the eco-friendly degradation of Levofloxacin and Indigo Carmine (76% and 90%), respectively. The superior photocatalytic performance of exfoliated g-C3N4/γ-Fe2O3/ZnO yolk-shell nanoparticles (NPs) was mostly ascribed to the synergistic advantages of stronger visible light response, larger specific surface area, and the more effective separation and transfer of photogenerated charge carriers. Based on these results, the highly effective magnetic photocatalyst achieved better results than numerous studied catalysts in the literature. The degradation of Levofloxacin and Indigo Carmine under environmentally friendly conditions can be achieved using exfoliated g-C3N4/γ-Fe2O3/ZnO yolk-shell NPs (V) as an efficient and green photocatalyst. The magnetic photocatalyst was characterized by spectroscopic and microscopic methods, revealing a spherical shape and particle size of 23 nm. Additionally, the magnetic photocatalyst could be separated from the reaction mixture by a magnet without significantly reducing its catalytic activity.
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Affiliation(s)
- Maryam Sadat Ghasemzadeh
- Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box, Mashhad, 91779-48944, Iran
- Industrial Catalysts, Adsorbents and Environment Lab., Oil and Gas Research Institute, Ferdowsi University of Mashhad, P.O. Box, Mashhad, 91779-48974, Iran
| | - Ali Ahmadpour
- Department of Chemical Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, P.O. Box, Mashhad, 91779-48944, Iran.
- Industrial Catalysts, Adsorbents and Environment Lab., Oil and Gas Research Institute, Ferdowsi University of Mashhad, P.O. Box, Mashhad, 91779-48974, Iran.
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Negahdary M, Akira Ameku W, Gomes Santos B, dos Santos Lima I, Gomes de Oliveira T, Carvalho França M, Angnes L. Recent electrochemical sensors and biosensors for toxic agents based on screen-printed electrodes equipped with nanomaterials. Microchem J 2023. [DOI: 10.1016/j.microc.2022.108281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Yao L, Chen A, Li Li, Liu Y. Preparation, properties, applications and outlook of graphene-based materials in biomedical field: A comprehensive review. JOURNAL OF BIOMATERIALS SCIENCE, POLYMER EDITION 2022; 34:1121-1156. [DOI: 10.1080/09205063.2022.2155781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Luyang Yao
- School of Pharmacy, Liaoning University, Shenyang 110036, People’s Republic of China
| | - Anqi Chen
- School of Pharmacy, Liaoning University, Shenyang 110036, People’s Republic of China
| | - Li Li
- School of Pharmacy, Liaoning University, Shenyang 110036, People’s Republic of China
- Liaoning Key Laboratory of New Drug Research & Development, Shenyang 110036, People’s Republic of China
| | - Yu Liu
- School of Pharmacy, Liaoning University, Shenyang 110036, People’s Republic of China
- Liaoning University, Judicial Expertise Center, Shenyang 110036, People’s Republic of China
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Nanocomposites of PVA/chitosan blend with BiOCl:Eu3+ prepared by Sonochemical route: Forensic and Optoelectronics applications. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.130446] [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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Sun Z, Sun S, Jiang X, Ai Y, Xu W, Xie L, Sun HB, Liang Q. Oligo-layer graphene stabilized fully exposed Fe-sites for ultra-sensitivity electrochemical detection of dopamine. Biosens Bioelectron 2022; 211:114367. [DOI: 10.1016/j.bios.2022.114367] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2022] [Revised: 05/01/2022] [Accepted: 05/05/2022] [Indexed: 11/02/2022]
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Zhao XW, Maimaiti H, Feng LR, Zhai PS, Bao JZ, Sun JY. Preparation of Coal-Based SiO2/GO-Loaded Ag Nanoparticle Composite Photocatalysts for Photocatalysis Nitrogen Fixation to Ammonia. Catal Letters 2022. [DOI: 10.1007/s10562-022-04150-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Wang ZZ, Zhang B, Weng X, Yu XD, Liu X, He TS. Application of electrospun polyimide-based porous nano-fibers separators in ionic liquid electrolyte for electrical double-layer capacitors. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124945] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Zuo H, Wang F, Huang Z, Wang Q, Li J, Rozga P. Synergistic effect of electric field and temperature on POSS modified natural ester insulating oil: A molecular dynamics study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.118923] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Jayan JS, Saritha A, Deeraj BDS, Joseph K. Modelling of the Rheological Behaviour of Epoxy-Polyethylene Glycol-1000 Blends. Top Catal 2022. [DOI: 10.1007/s11244-022-01617-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Zheng ALT, Ohno T, Andou Y. Recent Progress in Photocatalytic Efficiency of Hybrid Three-Dimensional (3D) Graphene Architectures for Pollution Remediation. Top Catal 2022. [DOI: 10.1007/s11244-022-01610-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Optimizing Hydrolysis Resistance and Dispersion Characteristics via Surface Modification of Aluminum Nitride Powder Coated with PVP- b-P(St- alt-ITA) Copolymer. Molecules 2022; 27:molecules27082457. [PMID: 35458655 PMCID: PMC9031262 DOI: 10.3390/molecules27082457] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 04/02/2022] [Accepted: 04/05/2022] [Indexed: 12/10/2022] Open
Abstract
Developing new coating modification technology of aluminum nitride (AlN) powder for higher hydrolysis resistance is the key to prepare high-performance AlN ceramic substrate with water-based wet process in the future. In the this paper, The poly(vinyl pyrrolidone)-b-poly(Styrene/Itaconic anhydride) (PVP-b-P(St/ITA))block copolymer with PVP as the independent chain segment was designed and synthesized through reversible addition fragmentation chain transfer (RAFT) polymerization, which was used for the study on coating modification, hydrolysis resistance, and dispersion performance of AIN powder. The study results show that, when using PVP macromolecular chain transfer agent (PVP-CTA) for the RAFT chain extension and polymerization in St/ITA binary system, the molecular weight increases linearly and the molecular weight distribution tends to decrease with the monomer conversion rate, which is in line with the activity-controlled characteristics of RAFT polymerization. The copolymer PVP-b-P(St/ITA) was used to for surface modification treatment of submicron AlN powder to generate esterification reaction, which was absorbed and bound to the powder surface. Hydrolysis resistance and dispersion experiments were conducted for modified powder, and the crystal phase and micro structure of modified powder were analyzed and observed through XRD, SEM, and TEM. It was found that copolymer modification had no effect on the powder crystal phase. A 8-21 nm passivation layer was coated on the surface, which can exist stably for 10 h in 60 °C water. Zeta potential and laser particle analyzer tests showed that modified powder featured excellent water-based slurry dispersion performance, and certain self-dispersing characteristics. The highest Zeta potential appeared in pH 6~7, and the particle granularity was distributed uniformly with the median particle diameter of 875 nm. The powder hydrolysis resistance and dispersion performance are significantly improved.
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PVP modified rGO/CoFe2O4 magnetic adsorbents with a unique sandwich structure and superior adsorption performance for anionic and cationic dyes. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120484] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Mathew J, Cassese D. Effects of morphology and charge transport of PDIF-CN2 /graphene TFT. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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