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Recent Progress in the Electrochemical Exfoliation of Colloidal Graphene: A Review 胶体石墨烯电化学剥离研究进展综述
Colloids - Types, Preparation and Applications [Working Title] Pub Date : 2021-02-17 DOI: 10.5772/INTECHOPEN.95522
Randhir Singh
{"title":"Recent Progress in the Electrochemical Exfoliation of Colloidal Graphene: A Review","authors":"Randhir Singh","doi":"10.5772/INTECHOPEN.95522","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.95522","url":null,"abstract":"Graphene is a wonder nanomaterial which is used in a wide variety of electronics applications because of its excellent electrical, optical, chemical and mechanical properties. For the efficient use of graphene in the preparation of modern electronics devices it is imperative to first prepare a colloidal solution of graphene. Although various techniques are being used for the synthesis of colloidal form of graphene, the synthesis of colloidal graphene via electrochemical exfoliation is time saving and easy, facile method which can be easily performed in the laboratory without any expensive and sophisticated equipment as required in other techniques. Through electrochemical exfoliation of colloidal graphene, high quality graphene can be obtained within short time. Further, after the electrochemical exfoliation of colloidal graphene, the colloidal solution is stable in the organic solvent for few weeks. The conducting electrodes prepared by this colloidal solution of graphene have wide application in the areas of flexible energy storage devices and sensors fabrication.","PeriodicalId":337776,"journal":{"name":"Colloids - Types, Preparation and Applications [Working Title]","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132194841","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}
引用次数: 2
Colloidal Nanocrystal-Based Electrocatalysts for Combating Environmental Problems and Energy Crisis 用于应对环境问题和能源危机的胶体纳米晶体电催化剂
Colloids - Types, Preparation and Applications [Working Title] Pub Date : 2021-02-11 DOI: 10.5772/INTECHOPEN.95338
R. Nazir, Abhay Prasad, Ashi Parihar, Mohammed S. Alqahtani, Rabbani Syed
{"title":"Colloidal Nanocrystal-Based Electrocatalysts for Combating Environmental Problems and Energy Crisis","authors":"R. Nazir, Abhay Prasad, Ashi Parihar, Mohammed S. Alqahtani, Rabbani Syed","doi":"10.5772/INTECHOPEN.95338","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.95338","url":null,"abstract":"The serious threat that human beings face in near future will be shortage of fossil fuel reserves and abrupt changes in global climate. To prepare for these serious concerns, raised due to climate change and shortage of fuels, conversion of excessive atmospheric CO2 into valuable chemicals and fuels and production of hydrogen from water splitting is seen most promising solutions to combat the rising CO2 levels and energy crises. Amoung the various techniques that have been employed electrocatalytic conversion of CO2 into fuels and hydrogen production from water has gained tremendous interest. Hydrogen is a zero carbon-emitting fuel, can be an alternative to traditional fossil fuels. Therefore, researchers working in these areas are constantly trying to find new electrocatalysts that can be applied on a real scale to deal with environmental issues. Recently, colloidal nanocrystals (C-NCs)-based electrocatalysts have gained tremendous attention due to their superior catalytic selectivity/activity and durability compared to existing bulk electrodes. In this chapter, the authors discuss the colloidal synthesis of NCs and the effect of their physiochemical properties such as shape, size and chemical composition on the electrocatalytic performance and durability towards electrocatalytic H2 evolution reaction (EH2ER) and electrocatalytic CO2 reduction reactions (ECO2RR). The last portion of this chapter presents a brief perspective of the challenges ahead.","PeriodicalId":337776,"journal":{"name":"Colloids - Types, Preparation and Applications [Working Title]","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123852049","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}
引用次数: 0
Gemini Imidazolinium Surfactants: A Versatile Class of Molecules Gemini咪唑类表面活性剂:多用途分子
Colloids - Types, Preparation and Applications [Working Title] Pub Date : 2020-12-09 DOI: 10.5772/intechopen.94209
Kajol Bhati, D. Tripathy, A. Gupta
{"title":"Gemini Imidazolinium Surfactants: A Versatile Class of Molecules","authors":"Kajol Bhati, D. Tripathy, A. Gupta","doi":"10.5772/intechopen.94209","DOIUrl":"https://doi.org/10.5772/intechopen.94209","url":null,"abstract":"Gemini imidazolinium surfactants fascinated the researchers and many industries towards it due to their distinct molecular structure. It belongs to the cationic surfactant group. The variation in the physicochemical properties of the gemini surfactant can be achieved by changing the characteristics in the structure. There are several applications of imidazolinium such as antistatic agents, fabric softener that makes it a demanding surfactant in detergent industries as well as in the laundry industries due to the immense number of properties like dispersibility, viscosity, desirable storage stability, emulsification, critical micelle concentration and fabric conditioning etc. This book chapter discussed about the Gemini imidazolinium surfactants and its various properties, synthesis methods and applications in various fields.","PeriodicalId":337776,"journal":{"name":"Colloids - Types, Preparation and Applications [Working Title]","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125808711","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}
引用次数: 0
A Simple and “Green” Technique to Synthesize Metal Nanocolloids by Ultrashort Light Pulses 一种利用超短光脉冲合成金属纳米胶体的简单“绿色”技术
Colloids - Types, Preparation and Applications [Working Title] Pub Date : 2020-11-19 DOI: 10.5772/intechopen.94750
J. M. Santillán, D. M. Arboleda, V. Arce, L. Scaffardi, D. Schinca
{"title":"A Simple and “Green” Technique to Synthesize Metal Nanocolloids by Ultrashort Light Pulses","authors":"J. M. Santillán, D. M. Arboleda, V. Arce, L. Scaffardi, D. Schinca","doi":"10.5772/intechopen.94750","DOIUrl":"https://doi.org/10.5772/intechopen.94750","url":null,"abstract":"In this chapter Ag, Ni and Fe nanocolloids synthesized by “green” ultrashort pulse laser ablation of solid metal targets using different pulse energies and liquid media are characterized by different techniques. Optical extinction spectroscopy (OES), micro-Raman spectroscopy (MRS), transmission electron microscopy (TEM) and electron diffraction (ED) were independently used to analyze optical, morphological and compositional properties of the generated nanocolloids. In a deeper way, the stability characteristics of Ag nanocolloids in aqueous solutions with different stabilizers were studied owing to their potential use in biocompatible compounds. Besides, due to their interesting applications, few atoms Ag nanoclusters (NCs) were synthesized using the same ablation technique, analyzing their fluorescent and photocatalytic properties. On the other hand, to expand the characterization of the nanocolloids, their magnetic behavior was inspected for the Ni and Fe by vibrating sample magnetometry (VSM).","PeriodicalId":337776,"journal":{"name":"Colloids - Types, Preparation and Applications [Working Title]","volume":"297 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132689510","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}
引用次数: 0
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