Parul Rana, Priya Dhull, Anita Sudhaik, Akshay Chawla, Van‐Huy Nguyen, Savaş Kaya, T. Ahamad, Pardeep Singh, C. Hussain, P. Raizada
Background: The utilization of photocatalytic materials has garnered significant consideration due to their distinctive properties and diverse applications in environmental remediation and energy conversion. In photocatalysis, several wide and narrow band gap photocatalysts have been discovered. Amongst several photocatalysts, g-C3N4 photocatalyst is becoming the interest of the research community due to its unique properties. But as a single photocatalyst, it is inherited with certain confines for instance higher photocarrier recombination rate, lower quantum yield, low specific surface area, etc. However, the heterojunction formation of g-C3N4 with other wide band gap photocatalysts (ZnO) has improved its photocatalytic properties by overcoming its limitations. Methods: The synergistic interaction amid g-C3N4 and ZnO photocatalysts enhanced optoelectrical properties superior mechanical strength and improved photocatalytic activity. The nanocomposite exhibits excellent stability, high surface area, efficient separation, and migration of photocarriers, which are advantageous for applications in photocatalytic energy conversion and environmental remediation. The g-C3N4-ZnO nanocomposite represents a material comprising g-C3N4 and ZnO photocatalysts which exhibit a broad absorption range, efficient electron-hole separation, and strong redox potential. The combination of these two distinct materials imparts enhanced properties to the resulting nanocomposite, making it suitable for various applications. Henceforth, current review, we have discussed the photocatalytic properties of g-C3N4 and ZnO photocatalysts and modification strategies to improve their photocatalytic properties. Significant Findings: This article offers an inclusive overview of the g-C3N4-ZnO-based nanocomposite, highlighting its photocatalytic properties and potential applications in several pollutant degradation and energy conversion including hydrogen production and CO2 reduction.
{"title":"Recent updates on g-C3N4/ZnO-based binary and ternary heterojunction photocatalysts toward environmental remediation and energy conversion","authors":"Parul Rana, Priya Dhull, Anita Sudhaik, Akshay Chawla, Van‐Huy Nguyen, Savaş Kaya, T. Ahamad, Pardeep Singh, C. Hussain, P. Raizada","doi":"10.37819/nanofab.8.1774","DOIUrl":"https://doi.org/10.37819/nanofab.8.1774","url":null,"abstract":"Background: The utilization of photocatalytic materials has garnered significant consideration due to their distinctive properties and diverse applications in environmental remediation and energy conversion. In photocatalysis, several wide and narrow band gap photocatalysts have been discovered. Amongst several photocatalysts, g-C3N4 photocatalyst is becoming the interest of the research community due to its unique properties. But as a single photocatalyst, it is inherited with certain confines for instance higher photocarrier recombination rate, lower quantum yield, low specific surface area, etc. However, the heterojunction formation of g-C3N4 with other wide band gap photocatalysts (ZnO) has improved its photocatalytic properties by overcoming its limitations. \u0000Methods: The synergistic interaction amid g-C3N4 and ZnO photocatalysts enhanced optoelectrical properties superior mechanical strength and improved photocatalytic activity. The nanocomposite exhibits excellent stability, high surface area, efficient separation, and migration of photocarriers, which are advantageous for applications in photocatalytic energy conversion and environmental remediation. The g-C3N4-ZnO nanocomposite represents a material comprising g-C3N4 and ZnO photocatalysts which exhibit a broad absorption range, efficient electron-hole separation, and strong redox potential. The combination of these two distinct materials imparts enhanced properties to the resulting nanocomposite, making it suitable for various applications. Henceforth, current review, we have discussed the photocatalytic properties of g-C3N4 and ZnO photocatalysts and modification strategies to improve their photocatalytic properties. \u0000Significant Findings: This article offers an inclusive overview of the g-C3N4-ZnO-based nanocomposite, highlighting its photocatalytic properties and potential applications in several pollutant degradation and energy conversion including hydrogen production and CO2 reduction.","PeriodicalId":51992,"journal":{"name":"Nanofabrication","volume":"23 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138954836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
O. Bagade, Priyanka E. Doke-Bagade, Siddhesh E. Doke, Krushna S. Wankhade
The development of efficient drug delivery systems is pivotal in modern pharmacotherapy, aiming to enhance biological efficacy while minimizing the adverse effects of pharmaceutical agents. Recent focus has shifted towards lipid as well as polymer-containing nano-phytotherapeutics, amalgamating the benefits of natural and synthetic materials. Lipid-containing nanocarriers, like liposomes and lipid nanoparticles, are particularly suited for encapsulating hydrophobic phytochemicals, thereby augmenting their bioavailability and stability. Incorporating biodegradable polymers like chitosan and polyethylene glycol facilitates controlled release and target-specific delivery. Furthermore, the utilization of plant-derived phytochemicals offers reduced toxicity compared to synthetic drugs. This chapter outlines current research in this domain, emphasizing the synergistic potential of lipid-based nanocarriers and biocompatible polymers for phytochemical delivery. Strategies encompass formulation techniques, surface modifications, and targeted drug release mechanisms. The potential applications of these systems in treating diverse diseases, including cancer, cardiovascular disorders, and infectious diseases, are also discussed. Overall, lipid and polymer-based Nano-phytotherapeutics exhibit promise as adaptable and biocompatible drug delivery platforms, heralding benefits for efficient and targeted phytochemical delivery, potentially revolutionizing modern medicine. Further advancement in this field is anticipated to yield novel therapeutic solutions with enhanced clinical outcomes and reduced side effects.
{"title":"Lipid And Polymer Based Nano-Phytotherapeutics","authors":"O. Bagade, Priyanka E. Doke-Bagade, Siddhesh E. Doke, Krushna S. Wankhade","doi":"10.37819/nanofab.8.1773","DOIUrl":"https://doi.org/10.37819/nanofab.8.1773","url":null,"abstract":"The development of efficient drug delivery systems is pivotal in modern pharmacotherapy, aiming to enhance biological efficacy while minimizing the adverse effects of pharmaceutical agents. Recent focus has shifted towards lipid as well as polymer-containing nano-phytotherapeutics, amalgamating the benefits of natural and synthetic materials. Lipid-containing nanocarriers, like liposomes and lipid nanoparticles, are particularly suited for encapsulating hydrophobic phytochemicals, thereby augmenting their bioavailability and stability. Incorporating biodegradable polymers like chitosan and polyethylene glycol facilitates controlled release and target-specific delivery. Furthermore, the utilization of plant-derived phytochemicals offers reduced toxicity compared to synthetic drugs. This chapter outlines current research in this domain, emphasizing the synergistic potential of lipid-based nanocarriers and biocompatible polymers for phytochemical delivery. Strategies encompass formulation techniques, surface modifications, and targeted drug release mechanisms. The potential applications of these systems in treating diverse diseases, including cancer, cardiovascular disorders, and infectious diseases, are also discussed. Overall, lipid and polymer-based Nano-phytotherapeutics exhibit promise as adaptable and biocompatible drug delivery platforms, heralding benefits for efficient and targeted phytochemical delivery, potentially revolutionizing modern medicine. Further advancement in this field is anticipated to yield novel therapeutic solutions with enhanced clinical outcomes and reduced side effects.","PeriodicalId":51992,"journal":{"name":"Nanofabrication","volume":"4 6","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138954903","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Farzane Memarian, Reza Mohammadi, R. Akrami, M. Bodaghi, Mohammad Fotouhi
Given the escalating concerns surrounding high energy consumption during manufacturing and the environmental impact of piezoelectric materials, the pursuit of sustainable alternatives has emerged as a critical challenge in shaping our technological future. In light of this imperative, this review paper investigates the domain of polymeric piezoelectric materials, with a specific focus on Polyvinylidene fluoride (PVDF) as a promising avenue for sustainable piezoelectric materials with a low-energy production process. The primary objective of this investigation is to conduct a comprehensive assessment of the existing research on the manufacturing processes of polymeric piezoelectric materials to enhance piezoelectric properties while minimizing energy-intensive production techniques. Through rigorous evaluation, the effectiveness of each manufacturing method is scrutinized, enabling the identification of the most energy-efficient approaches. This review paper paves the way for sustainable development and advancement of piezoelectric technologies.
{"title":"A Comprehensive Review of Nanocomposite PVDF as a Piezoelectric Material: Evaluating Manufacturing Methods, Energy Efficiency and Performance","authors":"Farzane Memarian, Reza Mohammadi, R. Akrami, M. Bodaghi, Mohammad Fotouhi","doi":"10.37819/nanofab.8.1775","DOIUrl":"https://doi.org/10.37819/nanofab.8.1775","url":null,"abstract":"Given the escalating concerns surrounding high energy consumption during manufacturing and the environmental impact of piezoelectric materials, the pursuit of sustainable alternatives has emerged as a critical challenge in shaping our technological future. In light of this imperative, this review paper investigates the domain of polymeric piezoelectric materials, with a specific focus on Polyvinylidene fluoride (PVDF) as a promising avenue for sustainable piezoelectric materials with a low-energy production process. The primary objective of this investigation is to conduct a comprehensive assessment of the existing research on the manufacturing processes of polymeric piezoelectric materials to enhance piezoelectric properties while minimizing energy-intensive production techniques. Through rigorous evaluation, the effectiveness of each manufacturing method is scrutinized, enabling the identification of the most energy-efficient approaches. This review paper paves the way for sustainable development and advancement of piezoelectric technologies.","PeriodicalId":51992,"journal":{"name":"Nanofabrication","volume":"13 7","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138956006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The improper disposal of dyes without any prior treatment is one of the main causes of water pollution around the globe. Since dye-contaminated water contains a variety of hazardous elements, which may harm the aquatic ecosystem, impact the aquatic organisms and ultimately enter the food web chain. The most effective ways to recycle dye-contaminated waste water are adsorption, electrolysis, advanced oxidation, etc. Out of these techniques, adsorption strategy, due to its superior physico-chemical features, has been preferably employed for treating polluted water. In this review article, the potential of pure nitrocellulose (NC) hydrogel, metal/metal oxide or photo-adsorbents-based, metal-organic-framework supported, surface functionalized, bio-materials filled NC-based hydrogels for dyes adsorption has been thoroughly reviewed. The impact of different factors such as pH, time, temperature and filler/additives on dye adsorption/degradation capability of NC-based adsorbents, and kinetic and isotherm data of dye adsorption has been assessed systematically. Further, the influence of different eluents on the recycling ability of various NC- based hydrogels has also been fully assessed.
{"title":"Nanocellulose-based Hydrogels: Preparation Strategies, Dye Adsorption and Factors Impacting","authors":"A. Rana","doi":"10.37819/nanofab.8.1757","DOIUrl":"https://doi.org/10.37819/nanofab.8.1757","url":null,"abstract":"The improper disposal of dyes without any prior treatment is one of the main causes of water pollution around the globe. Since dye-contaminated water contains a variety of hazardous elements, which may harm the aquatic ecosystem, impact the aquatic organisms and ultimately enter the food web chain. The most effective ways to recycle dye-contaminated waste water are adsorption, electrolysis, advanced oxidation, etc. Out of these techniques, adsorption strategy, due to its superior physico-chemical features, has been preferably employed for treating polluted water. In this review article, the potential of pure nitrocellulose (NC) hydrogel, metal/metal oxide or photo-adsorbents-based, metal-organic-framework supported, surface functionalized, bio-materials filled NC-based hydrogels for dyes adsorption has been thoroughly reviewed. The impact of different factors such as pH, time, temperature and filler/additives on dye adsorption/degradation capability of NC-based adsorbents, and kinetic and isotherm data of dye adsorption has been assessed systematically. Further, the influence of different eluents on the recycling ability of various NC- based hydrogels has also been fully assessed.","PeriodicalId":51992,"journal":{"name":"Nanofabrication","volume":"3 9","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139240653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Dermal infections present a major health risk and challenge in clinical and community settings. Painful procedures are often involved in conventional diagnostic and treatment methods, causing patient discomfort and non-compliance. Pain-free and minimally invasive approaches are offered by microneedles as a promising technology for the diagnosis and mitigation of dermal infections. The focus of this paper is on the advancements and approaches to fabricating painless microneedles for the mitigation and diagnosis of dermal infections. Microneedles provide a painless and minimally invasive option compared to traditional techniques. Additionally, it emphasizes incorporating sensing technologies to diagnose infections. Microneedles that don't cause pain could change dermatology practices by offering patient-friendly and effective solutions for diagnosing and managing dermal infections. The article covers regulatory concerns, scalability, and cost-effectiveness, stressing the necessity for additional research and development for implementing this technology in clinical settings. The significance of painless microneedles in improving patient comfort, adherence, and early detection of dermal infections is emphasized. In conclusion, the invention of pain-free microneedles is notable progress in preventing and diagnosing skin infections. The successful implementation of painless microneedles has the potential to revolutionize dermatology practices, enabling effective and patient-friendly approaches for the management and diagnosis of dermal infections.
{"title":"Revisiting the advancement with painless microneedles for the diagnosis and treatment of dermal infections: A review","authors":"Popat Mohite, Meenakshi Patel, Abhijeet Puri, Anil Pawar, Sudarshan Singh, Bhupendra Prajapati","doi":"10.37819/nanofab.8.332","DOIUrl":"https://doi.org/10.37819/nanofab.8.332","url":null,"abstract":"Dermal infections present a major health risk and challenge in clinical and community settings. Painful procedures are often involved in conventional diagnostic and treatment methods, causing patient discomfort and non-compliance. Pain-free and minimally invasive approaches are offered by microneedles as a promising technology for the diagnosis and mitigation of dermal infections. The focus of this paper is on the advancements and approaches to fabricating painless microneedles for the mitigation and diagnosis of dermal infections. Microneedles provide a painless and minimally invasive option compared to traditional techniques. Additionally, it emphasizes incorporating sensing technologies to diagnose infections. Microneedles that don't cause pain could change dermatology practices by offering patient-friendly and effective solutions for diagnosing and managing dermal infections. The article covers regulatory concerns, scalability, and cost-effectiveness, stressing the necessity for additional research and development for implementing this technology in clinical settings. The significance of painless microneedles in improving patient comfort, adherence, and early detection of dermal infections is emphasized. In conclusion, the invention of pain-free microneedles is notable progress in preventing and diagnosing skin infections. The successful implementation of painless microneedles has the potential to revolutionize dermatology practices, enabling effective and patient-friendly approaches for the management and diagnosis of dermal infections.","PeriodicalId":51992,"journal":{"name":"Nanofabrication","volume":"17 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139280942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The incorporation of S-g-C3N4 into CuNPs resulted in enhanced electrochemical performance. The introduction of sulfur facilitated the formation of a highly conductive network within the composite material, enabling effective charge transfer and improved specific capacitance. The g-C3N4 matrix served as a support network, controlling the accumulation of CuNPs and delivering stability during electrochemical cycling. The optimized S-g-C3N4/CuNPs composite showed superior electrochemical performance, high specific capacitance, and enhanced cycling stability. In this study, a facile and scalable synthesis method was employed to fabricate S-g-C3N4/CuNPs composite materials on GCE. The resulting composites were characterized using different optical and microscopic techniques. The electrochemical performance of the nanocomposites was assessed via using different techniques such as cyclic voltammetry (CV), and galvanostatic charge-discharge (GCD) techniques. The S-g-C3N4/CuNPs nanocomposite exhibited excellent electrochemical properties with a specific capacitance of 1944.18 F/g at a current density of 0.5 A/g and excellent cycling stability. The resultant composite material exhibits excellent electrochemical performance, making it an advantageous nominee for energy storage applications needing high power density, extended cycling life, and steadfast performance.
加入S-g-C3N4后，其电化学性能得到增强。硫的引入促进了复合材料内部高导电性网络的形成，实现了有效的电荷转移和提高了比电容。g-C3N4基质作为支持网络，控制了CuNPs的积累，并在电化学循环过程中提供了稳定性。优化后的S-g-C3N4/CuNPs复合材料具有优异的电化学性能、较高的比电容和更强的循环稳定性。本研究采用一种简便、可扩展的合成方法，在GCE上制备了S-g-C3N4/CuNPs复合材料。利用不同的光学和显微技术对所得复合材料进行了表征。通过循环伏安法(CV)和恒流充放电(GCD)等技术对纳米复合材料的电化学性能进行了评价。在0.5 a /g电流密度下，S-g-C3N4/CuNPs纳米复合材料的比电容达到1944.18 F/g，具有良好的循环稳定性。合成的复合材料表现出优异的电化学性能，使其成为需要高功率密度、长循环寿命和稳定性能的储能应用的有利人选。
{"title":"Incorporation of sulfur with graphitic carbon nitride into copper nanoparticles toward supercapacitor application","authors":"Karamveer Sheoran, Nishu Devi, Samarjeet Singh Siwal","doi":"10.37819/nanofab.8.336","DOIUrl":"https://doi.org/10.37819/nanofab.8.336","url":null,"abstract":"The incorporation of S-g-C3N4 into CuNPs resulted in enhanced electrochemical performance. The introduction of sulfur facilitated the formation of a highly conductive network within the composite material, enabling effective charge transfer and improved specific capacitance. The g-C3N4 matrix served as a support network, controlling the accumulation of CuNPs and delivering stability during electrochemical cycling. The optimized S-g-C3N4/CuNPs composite showed superior electrochemical performance, high specific capacitance, and enhanced cycling stability. In this study, a facile and scalable synthesis method was employed to fabricate S-g-C3N4/CuNPs composite materials on GCE. The resulting composites were characterized using different optical and microscopic techniques. The electrochemical performance of the nanocomposites was assessed via using different techniques such as cyclic voltammetry (CV), and galvanostatic charge-discharge (GCD) techniques. The S-g-C3N4/CuNPs nanocomposite exhibited excellent electrochemical properties with a specific capacitance of 1944.18 F/g at a current density of 0.5 A/g and excellent cycling stability. The resultant composite material exhibits excellent electrochemical performance, making it an advantageous nominee for energy storage applications needing high power density, extended cycling life, and steadfast performance.","PeriodicalId":51992,"journal":{"name":"Nanofabrication","volume":"6 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134908680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Magnetic nanoparticles (MNPs) are receiving increasing attention from individual scientists and research companies as promising materials for biomedical applications. Mas different methodny other methods can synthesize magnetic nanoparticles can synthesize magnetic nanoparticles. Before proceeding to the synthesis process, the cost of using it and the practicality of the synthesis conditions are well investigated. Especially in their use in the biomedical field, features such as not containing toxic substances, high biocompatibility, and low particle size are desired. However, the use of magnetic nanoparticles in biomedical applications is limited due to various difficulties such as particle agglomeration and oxidation of magnetic cores of MNPs. To overcome these challenges, MNPs can be coated with various natural and synthetic polymers to alter their morphological structure, magnetic character, biocompatibility, and especially surface functional groups. Therefore, this chapter focuses on the synthesis of MNPs by different methods, the effects of these synthesis methods on magnetic properties and size, their modifications with natural and synthetic polymers, and the use of these polymer-coated MNPs in biomedical fields such as targeted drug release, enzyme immobilization, biosensors, tissue engineering, magnetic imaging, and hyperthermia. The review article also provides examples of advanced biomedical applications of polymer-coated MNPs and perspectives for future research to promote polymer-coated MNPs. To this end, we aim to highlight knowledge gaps that can guide future research to improve the performance of MNPs for different applications.
{"title":"Synthesis and Biomedical Applications of Polymer-Functionalized Magnetic Nanoparticles","authors":"Gamze Dik, Ahmet Ulu, B. Ateş","doi":"10.37819/nanofab.8.329","DOIUrl":"https://doi.org/10.37819/nanofab.8.329","url":null,"abstract":"Magnetic nanoparticles (MNPs) are receiving increasing attention from individual scientists and research companies as promising materials for biomedical applications. Mas different methodny other methods can synthesize magnetic nanoparticles can synthesize magnetic nanoparticles. Before proceeding to the synthesis process, the cost of using it and the practicality of the synthesis conditions are well investigated. Especially in their use in the biomedical field, features such as not containing toxic substances, high biocompatibility, and low particle size are desired. However, the use of magnetic nanoparticles in biomedical applications is limited due to various difficulties such as particle agglomeration and oxidation of magnetic cores of MNPs. To overcome these challenges, MNPs can be coated with various natural and synthetic polymers to alter their morphological structure, magnetic character, biocompatibility, and especially surface functional groups. Therefore, this chapter focuses on the synthesis of MNPs by different methods, the effects of these synthesis methods on magnetic properties and size, their modifications with natural and synthetic polymers, and the use of these polymer-coated MNPs in biomedical fields such as targeted drug release, enzyme immobilization, biosensors, tissue engineering, magnetic imaging, and hyperthermia. The review article also provides examples of advanced biomedical applications of polymer-coated MNPs and perspectives for future research to promote polymer-coated MNPs. To this end, we aim to highlight knowledge gaps that can guide future research to improve the performance of MNPs for different applications.","PeriodicalId":51992,"journal":{"name":"Nanofabrication","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47629153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Naveen Thakur, Nikesh Thakur, K. Kumar, V. Arya, Ashwani Kumar
The primary global source of water pollution is textile dyes. Highly stable organic dyes are produced by these industries that are released untreated into nearby ponds, lakes and rivers. This paper is devoted to synthesis of nickle doped anatase phase of TiO2 nanoparticles (Ni-ATD NPs) by encapsulating plant Tinospora cordifolia (TC) through microwave assisted method for degradation of malachite green (MG) dye. The synthesized NPs were calcinated at 400 oC temperature to achieve the anatase phase. The synthesized Ni-ATD NPs were analysed with different characterization methods. X-ray diffraction (XRD) and Raman analysis confirmed the crystalline nature for Ni-ATD NPs with a tetragonal structure having crystallite size of 11 nm. Scanning electron microscope (SEM) determined the spherical surface morphology for synthesized NPs. The absorption peaks of Ni-ATD NPs were originated from 360 to 370 nm from UV-Visible spectroscopy in which the bandgap was found to be 3.45 eV. The photocatalytic activity for MG dye was evaluated under ultra-violet (UV) light using Ni-ATD NPs for 90 minutes which exhibited the degradation up to 100 %.
{"title":"Encapsulation of Tinospora cordifolia plant in Ni doped TiO2 nanoparticles for the degradation of malachite green dye","authors":"Naveen Thakur, Nikesh Thakur, K. Kumar, V. Arya, Ashwani Kumar","doi":"10.37819/nanofab.8.305","DOIUrl":"https://doi.org/10.37819/nanofab.8.305","url":null,"abstract":"The primary global source of water pollution is textile dyes. Highly stable organic dyes are produced by these industries that are released untreated into nearby ponds, lakes and rivers. This paper is devoted to synthesis of nickle doped anatase phase of TiO2 nanoparticles (Ni-ATD NPs) by encapsulating plant Tinospora cordifolia (TC) through microwave assisted method for degradation of malachite green (MG) dye. The synthesized NPs were calcinated at 400 oC temperature to achieve the anatase phase. The synthesized Ni-ATD NPs were analysed with different characterization methods. X-ray diffraction (XRD) and Raman analysis confirmed the crystalline nature for Ni-ATD NPs with a tetragonal structure having crystallite size of 11 nm. Scanning electron microscope (SEM) determined the spherical surface morphology for synthesized NPs. The absorption peaks of Ni-ATD NPs were originated from 360 to 370 nm from UV-Visible spectroscopy in which the bandgap was found to be 3.45 eV. The photocatalytic activity for MG dye was evaluated under ultra-violet (UV) light using Ni-ATD NPs for 90 minutes which exhibited the degradation up to 100 %.","PeriodicalId":51992,"journal":{"name":"Nanofabrication","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46847524","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This study explores the synthesis, properties, and applications of chitosan-encapsulated silver sulphide (Ag2S) quantum dots (QDs) for biological applications. The investigation focuses on the fluctuations in the physico-chemical characteristics of chitosan Ag2S QDs, which can be carefully studied due to their environmental activity. X-ray diffraction (XRD) measurements reveal that chitosan-coated Ag2S QDs exhibit higher-intensity peaks. The XRD analysis reports a range of crystallite sizes, with a minimum size of 8 nm and a maximum size of 12 nm. Fourier-transform infrared (FTIR) spectroscopy confirms the presence of chitosan through the detection of functional group peaks. High-resolution transmission electron microscopy (HRTEM) studies indicate that the size of the artificial quantum dots is 6 nm. Energy-dispersive X-ray spectroscopy (EDX) verifies the composition of chitosan-encapsulated Ag2S QDs. Moreover, the chitosan Ag2S quantum dots demonstrate exceptional photocatalytic activity, as evidenced by the degradation of 92% of methylene blue dye within one hour. This research provides valuable insights into the synthesis, properties, and potential applications of chitosan-encapsulated Ag2S quantum dots in diverse fields.
{"title":"Enhanced Photocatalytic Applications of Chitosan Encapsulated Silver Sulphide Quantum Dots","authors":"Ambalika Sharma, R. Sharma, Asha Kumari","doi":"10.37819/nanofab.8.327","DOIUrl":"https://doi.org/10.37819/nanofab.8.327","url":null,"abstract":"This study explores the synthesis, properties, and applications of chitosan-encapsulated silver sulphide (Ag2S) quantum dots (QDs) for biological applications. The investigation focuses on the fluctuations in the physico-chemical characteristics of chitosan Ag2S QDs, which can be carefully studied due to their environmental activity. X-ray diffraction (XRD) measurements reveal that chitosan-coated Ag2S QDs exhibit higher-intensity peaks. The XRD analysis reports a range of crystallite sizes, with a minimum size of 8 nm and a maximum size of 12 nm. Fourier-transform infrared (FTIR) spectroscopy confirms the presence of chitosan through the detection of functional group peaks. High-resolution transmission electron microscopy (HRTEM) studies indicate that the size of the artificial quantum dots is 6 nm. Energy-dispersive X-ray spectroscopy (EDX) verifies the composition of chitosan-encapsulated Ag2S QDs. Moreover, the chitosan Ag2S quantum dots demonstrate exceptional photocatalytic activity, as evidenced by the degradation of 92% of methylene blue dye within one hour. This research provides valuable insights into the synthesis, properties, and potential applications of chitosan-encapsulated Ag2S quantum dots in diverse fields.","PeriodicalId":51992,"journal":{"name":"Nanofabrication","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49211333","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Reducing CO2 net emissions is one of the most pressing goals in tackling the current global warming emergency. Therefore, the development of carbon recycling strategies has resulted in the application of heterogeneous catalysts toward the electro/photocatalysis reduction of CO2 into hydrocarbons with potential reusability. Their morphology is among the properties that affect the performance and selectivity of catalysts towards this reaction. Nanostructuring methods offer popular strategies for catalytic applications since they allow an increase in the area/volume ratio and versatile control over surface physicochemical properties. In this review, we summarize studies that report the use of versatile synthesis techniques for obtaining nanostructured metallic and semiconductor materials with application in the electro/photocatalytic reduction of CO2. Enhancing mechanisms to the catalytic CO2 reduction yield, such as improved charge carrier separation efficiency, defect engineering, active site concentration, and localized plasmonic behavior, are described in conjunction with the control over the morphologies of the nanostructured platforms. Special attention is given to ZnO and silicon-based matrices as candidates for developing abundant and non-toxic catalytic materials. Therefore, this work represents a guide to the efforts made to design electro/photocatalytic systems that can contribute significantly to this field.
{"title":"CO2 electro/photocatalytic reduction using nanostructured ZnO and silicon-based materials: A short review","authors":"A. Galdámez-Martínez, A. Dutt","doi":"10.37819/nanofab.8.306","DOIUrl":"https://doi.org/10.37819/nanofab.8.306","url":null,"abstract":"Reducing CO2 net emissions is one of the most pressing goals in tackling the current global warming emergency. Therefore, the development of carbon recycling strategies has resulted in the application of heterogeneous catalysts toward the electro/photocatalysis reduction of CO2 into hydrocarbons with potential reusability. Their morphology is among the properties that affect the performance and selectivity of catalysts towards this reaction. Nanostructuring methods offer popular strategies for catalytic applications since they allow an increase in the area/volume ratio and versatile control over surface physicochemical properties. In this review, we summarize studies that report the use of versatile synthesis techniques for obtaining nanostructured metallic and semiconductor materials with application in the electro/photocatalytic reduction of CO2. Enhancing mechanisms to the catalytic CO2 reduction yield, such as improved charge carrier separation efficiency, defect engineering, active site concentration, and localized plasmonic behavior, are described in conjunction with the control over the morphologies of the nanostructured platforms. Special attention is given to ZnO and silicon-based matrices as candidates for developing abundant and non-toxic catalytic materials. Therefore, this work represents a guide to the efforts made to design electro/photocatalytic systems that can contribute significantly to this field.","PeriodicalId":51992,"journal":{"name":"Nanofabrication","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43248147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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