This comprehensive review examines hydrogen’s potential as a pivotal clean energy carrier,focusing on its role in replacing fossil fuels across various industries.This study also examines recent advancements in hydro...This comprehensive review examines hydrogen’s potential as a pivotal clean energy carrier,focusing on its role in replacing fossil fuels across various industries.This study also examines recent advancements in hydrogen production technologies,including electrolysis,steam methane reforming,and biomass gasification,emphasizing their economic and environmental impacts.Special attention is given to hydrogen produced from renewable sources like solar and wind energy,emphasizing its benefits in reducing carbon emissions and contributing to a sustainable energy future.The review discusses technological challenges,cost factors,and the necessary infrastructure for hydrogen production and storage,particularly in relation to achieving global energy transition goals.Furthermore,the study stresses the importance of government policies and international collaboration to drive the adoption of hydrogen technologies.The study concludes by outlining the transformative potential of hydrogen in decarbonizing key sectors such as transportation and heavy industry.It demonstrates the significant contribution of hydrogen to a low-carbon global energy system and provides valuable insights into its role in improving grid stability,energy security,and supporting sustainable industrial practices.展开更多
In recent times,solar energy has become one of the largest available sources of renewable energy at our disposal.However,the design of highly efficient solar cells is increasingly becoming crucial as there has been a ...In recent times,solar energy has become one of the largest available sources of renewable energy at our disposal.However,the design of highly efficient solar cells is increasingly becoming crucial as there has been a surge for economically viable alternative energy sources with the lowest cost.Significant advances have been made through different routes to make photovoltaic(PV)/solar technologies economically viable,eco-friendly and consequently scalable.As a result,cellulose nanomaterials have become one of the emerging technologies in this regard because of the advantages of high-value bio-based nanostructured materials,such as their abundance and sustainability.Nanocellulose-based photoactive nanocomposite materials can be made by integrating conducting photoactive and electroconductive materials with hydrophilic biocompatible cellulose.Inorganic nanoparticles,such as graphene/reduced graphene oxide cadmium sulphide quantum dots,amongst others,can be introduced into the nanocellulose matrix and can be applied either as charge transporters or photoactive materials in different types of solar cells.Thus,in this review,we highlight the optoelectronic properties of different photoactive materials,particularly nanocellulose-based graphene nanocomposites;their efficiencies and drawbacks were X-rayed.The effect of doping each PV material on the PV performance is also discussed.It is anticipated that the novel material would result in a reduction in the cost of solar cells,jointly enhancing their efficacy in generating environmentally friendly electricity.Since the fabrication techniques and equipment play a crucial role in the development of solar cells,the fabrication techniques of bulk-heterojunction(BHJ)cells containing a nanocellulose-based graphene composite and case studies of already fabricated BHJ PV cells with nanocellulose-based graphene composite are discussed.展开更多
This study highlights the significant potential of activated carbon(AC)-based materials in environmental remediation and energy production,particularly in converting carbon dioxide(CO_(2))and hydrogen(H_(2))into metha...This study highlights the significant potential of activated carbon(AC)-based materials in environmental remediation and energy production,particularly in converting carbon dioxide(CO_(2))and hydrogen(H_(2))into methane(CH_(4))and water(H_(2)O)using transition metal-based catalysts.It emphasizes the role of porous AC in waste reduction and resource utilization,examining various applications of CO_(2) and evaluating environmental impacts.The research explores commercialization opportunities and specifically investigates CO_(2) methanation using AC-based materials.Using bibliometric analyses of 4196 articles from the Web of Science database,the study identifies a growing research interest in porous AC-related CO_(2) methanation from 2014 to 2024.The top three journals in this field are Environment Development and Sustainability,Biomass Conversion and Biorefinery,and Journal of Environment Science and Pollution.However,there is limited inter-institutional collaboration in this field,suggesting room for development towards commercializing sustainable CH_(4) production pathways.CH_(4) is highlighted as a crucial intermediate in industrial processes,and research directions are identified through co-occurring author keywords analysis.The study suggests the need for a comprehensive approach integrating AC materials into carbon-neutral energy processes while addressing the potential adverse effects of AC nanoparticles on biological and environmental factors.Ultimately,it clarifies the potential uses and commercialization prospects for porous AC materials,especially in conjunction with carbon capture and utilization technologies,promoting sustainable practices in energy production and environmental management.展开更多
基金supported by the DUT Scholarship Scheme Doctoral:2024(RFA-ENERGY).
文摘This comprehensive review examines hydrogen’s potential as a pivotal clean energy carrier,focusing on its role in replacing fossil fuels across various industries.This study also examines recent advancements in hydrogen production technologies,including electrolysis,steam methane reforming,and biomass gasification,emphasizing their economic and environmental impacts.Special attention is given to hydrogen produced from renewable sources like solar and wind energy,emphasizing its benefits in reducing carbon emissions and contributing to a sustainable energy future.The review discusses technological challenges,cost factors,and the necessary infrastructure for hydrogen production and storage,particularly in relation to achieving global energy transition goals.Furthermore,the study stresses the importance of government policies and international collaboration to drive the adoption of hydrogen technologies.The study concludes by outlining the transformative potential of hydrogen in decarbonizing key sectors such as transportation and heavy industry.It demonstrates the significant contribution of hydrogen to a low-carbon global energy system and provides valuable insights into its role in improving grid stability,energy security,and supporting sustainable industrial practices.
文摘In recent times,solar energy has become one of the largest available sources of renewable energy at our disposal.However,the design of highly efficient solar cells is increasingly becoming crucial as there has been a surge for economically viable alternative energy sources with the lowest cost.Significant advances have been made through different routes to make photovoltaic(PV)/solar technologies economically viable,eco-friendly and consequently scalable.As a result,cellulose nanomaterials have become one of the emerging technologies in this regard because of the advantages of high-value bio-based nanostructured materials,such as their abundance and sustainability.Nanocellulose-based photoactive nanocomposite materials can be made by integrating conducting photoactive and electroconductive materials with hydrophilic biocompatible cellulose.Inorganic nanoparticles,such as graphene/reduced graphene oxide cadmium sulphide quantum dots,amongst others,can be introduced into the nanocellulose matrix and can be applied either as charge transporters or photoactive materials in different types of solar cells.Thus,in this review,we highlight the optoelectronic properties of different photoactive materials,particularly nanocellulose-based graphene nanocomposites;their efficiencies and drawbacks were X-rayed.The effect of doping each PV material on the PV performance is also discussed.It is anticipated that the novel material would result in a reduction in the cost of solar cells,jointly enhancing their efficacy in generating environmentally friendly electricity.Since the fabrication techniques and equipment play a crucial role in the development of solar cells,the fabrication techniques of bulk-heterojunction(BHJ)cells containing a nanocellulose-based graphene composite and case studies of already fabricated BHJ PV cells with nanocellulose-based graphene composite are discussed.
基金During this research,funding was provided by the DUT Scholarship Scheme Doctoral:2022(RFA-ENERGY)at Durban University of Technology。
文摘This study highlights the significant potential of activated carbon(AC)-based materials in environmental remediation and energy production,particularly in converting carbon dioxide(CO_(2))and hydrogen(H_(2))into methane(CH_(4))and water(H_(2)O)using transition metal-based catalysts.It emphasizes the role of porous AC in waste reduction and resource utilization,examining various applications of CO_(2) and evaluating environmental impacts.The research explores commercialization opportunities and specifically investigates CO_(2) methanation using AC-based materials.Using bibliometric analyses of 4196 articles from the Web of Science database,the study identifies a growing research interest in porous AC-related CO_(2) methanation from 2014 to 2024.The top three journals in this field are Environment Development and Sustainability,Biomass Conversion and Biorefinery,and Journal of Environment Science and Pollution.However,there is limited inter-institutional collaboration in this field,suggesting room for development towards commercializing sustainable CH_(4) production pathways.CH_(4) is highlighted as a crucial intermediate in industrial processes,and research directions are identified through co-occurring author keywords analysis.The study suggests the need for a comprehensive approach integrating AC materials into carbon-neutral energy processes while addressing the potential adverse effects of AC nanoparticles on biological and environmental factors.Ultimately,it clarifies the potential uses and commercialization prospects for porous AC materials,especially in conjunction with carbon capture and utilization technologies,promoting sustainable practices in energy production and environmental management.
