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오늘 본 자료
Theerthagiri, Jayaraman,Durai, Govindarajan,Karuppasamy, K.,Arunachalam, Prabhakarn,Elakkiya, Venugopal,Kuppusami, Parasuraman,Maiyalagan, Thandavarayan,Kim, Hyun-Seok THE KOREAN SOCIETY OF INDUSTRIAL AND ENGINEERING 2018 JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY -S Vol.67 No.-
<P><B>Abstract</B></P> <P>Supercapacitors (SCs) has gained an impressive concentration by the researchers due to its advantages such as high energy and power densities, long cyclic life, rapid charge–discharge rates, low maintenance and desirable safety. Hence it has been widely utilized in energy storage and conversion devices. Among the different components of SC, electrodes play a vital role in the performances of SCs. In this review, we present the recent advances in 2-D nanostructured metal nitrides, carbides, and phosphides based materials for SC electrodes. Finally, the electrochemical stability and designing approach for the future advancement of the electrode materials are also highlighted.</P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Theerthagiri Jayaraman,Arun Prasad Murthy,Venugopal Elakkiya,Sivaraman Chandrasekaran,Palaniyandy Nithyadharseni,Ziyauddin Khan,Raja Arumugam Senthil,Ravishanker,Mitty Raghavender,Parasuraman Kuppusam 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.64 No.-
Nanostructured carbon based materials with unique and tunable properties make them to be utilized forvarious applications in different forms especially for energy and environmental applications. Carbon is adistinctive chemical element which has superior properties such as porous structure, low cost, resistanceto basic and acidic conditions, easy accessibility, low density, good recycling properties, more abundantand ability to combine with other chemical elements in different ways. In this review, we have criticallyassessed the recent developments in carbon based heterostructures for their applications in energy andenvironment. Special consideration has been paid on the applications in dye-sensitized solar cells,hydrogen evolution reaction, oxygen evolution reaction, Li-ion battery, supercapacitor, photocatalysis forthe degradation of organic pollutants, electrochemical/bio sensors and biomedical applications. Finally,the challenges and future developments of carbon based heterostructures for applications in energy andenvironment are also outlined.
Jayaraman Theerthagiri,Govindarajan Durai,K. Karuppasamy,Prabhakarn Arunachalam,Venugopal Elakkiya,Parasuraman Kuppusami,Thandavarayan Maiyalagan,김현석 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.67 No.-
Supercapacitors (SCs) has gained an impressive concentration by the researchers due to its advantages such as high energy and power densities, long cyclic life, rapid charge–discharge rates, low maintenance and desirable safety. Hence it has been widely utilized in energy storage and conversion devices. Among the different components of SC, electrodes play a vital role in the performances of SCs. In this review, we present the recent advances in 2-D nanostructured metal nitrides, carbides, and phosphides based materials for SC electrodes. Finally, the electrochemical stability and designing approach for the future advancement of the electrode materials are also highlighted.
Lee, Seung Heon,Jung, Hyeon Jin,Lee, Seung Jun,Theerthagiri, Jayaraman,Kim, Tae Ho,Choi, Myong Yong Elsevier 2020 APPLIED SURFACE SCIENCE - Vol.506 No.-
<P><B>Abstract</B></P> <P>Gold nanoparticles (Au NPs) are the most versatile nanomaterials reported to date owing to their unique physiochemical properties as well as promising various applications. Recently, many techniques have been used for the synthesis of Au NPs. In this study, various types of Au NPs were synthesized by pulsed laser ablation in liquid (PLAL) using the following four solvents: methanol, deionized (DI) water, hexane, and acetonitrile. Pulsed laser ablation in methanol and DI water is used for the synthesis of bare Au NPs, as photocatalysts. Au NPs showed an enhanced catalytic activity toward the reduction of 4-nitrophenol to 4-aminophenol. Interestingly, Au NPs prepared by PLAL using hexane and acetonitrile were encapsulated with graphitic carbon (GC) layers (Au@GC), where the solvent was used as a carbon source for the GC layers. In contrast to bare Au NPs, Au@GC NPs exhibited no catalytic activity due to the protective GC layers formed on Au NPs. On the other hand, Au@GC NPs demonstrated a high corrosion resistance against strong acids. The present study revealed that the PLA of Au plate in various liquid medium is a facile method for the synthesis of excellent catalytic or acid resistant Au NPs with a unique surface structure.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Bare Au nanoparticles (NPs) were prepared by PLA in methanol and DI water. </LI> <LI> Au@graphitic carbon (GC) NPs were prepared by PLA in hexane and acetonitrile. </LI> <LI> Catalytic activity was observed by only bare Au NPs, but no activity by Au@GC NPs. </LI> <LI> GC layers were formed only on small Au NPs (< ~50 nm) due to carbon solubility. </LI> <LI> Acid treatment is an easy and simple way for the preparation of small Au@GC NPs. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Two‐dimensional Ti 3 C 2 MXene for photocatalytic hydrogen production: A
Reghunath B. Shalini,Rajasekaran Sruthi,Mathew Sandra,Pinheiro Dephan,Devi K. R Sunaja,정시언,Jayaraman Theerthagiri,최명룡 대한화학회 2023 Bulletin of the Korean Chemical Society Vol.44 No.12
This study focuses on the utilization of two‐dimensional Ti 3 C 2 MXene as a catalyst for photocatalytic hydrogen production. MXenes, a class of transition metal carbides/nitrides, exhibit exceptional properties conducive to enhancing photocatalytic reactions. This research explores the performance of Ti 3 C 2 MXene as a cocatalyst in photocatalytic systems, aiming to improve charge separation, inhibit recombination, and facilitate efficient hydrogen evolution from water under light irradiation. The synthesis methods, catalyst‐loading strategies, and overall photocatalytic mechanisms are investigated, shedding light on the potential of Ti 3 C 2 MXene as a promising material for advancing hydrogen production through sustainable means. This study focuses on the utilization of two-dimensional Ti3C2 MXene as a catalyst for photocatalytic hydrogen production. MXenes, a class of transition metal carbides/nitrides, exhibit exceptional properties conducive to enhancing photocatalytic reactions. This research explores the performance of Ti3C2 MXene as a cocatalyst in photocatalytic systems, aiming to improve charge separation, inhibit recombination, and facilitate efficient hydrogen evolution from water under light irradiation. The synthesis methods, catalyst-loading strategies, and overall photocatalytic mechanisms are investigated, shedding light on the potential of Ti3C2 MXene as a promising material for advancing hydrogen production through sustainable means.