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Shinde, Manish,Qureshi, Nilam,Rane, Sunit,Kim, Jang Ah,Kim, Taesung,Amalnerkar, Dinesh American Scientific Publishers 2017 Journal of Nanoscience and Nanotechnology Vol.17 No.7
<P>Microwaves are routinely used in the contemporary chemical synthesis of nanomaterials to increase the reaction kinetics and reduce the reaction time. In the present investigation, microwaves have been used in two step solvothermal and combustion method for the synthesis of iron oxide (alpha-Fe2O3) nanostructures. The structural examination reveals formation of hematite phase of iron oxide. Morphological analysis shows formation of sheet and rod-like morphologies depending on reaction conditions. Owing to such morphologies enabling relatively large surface to volume ratio, these nanostructures can find useful applications in supercapacitors, photocatalysis and sensors.</P>
Shinde, S.K.,Kim, D.-Y.,Ghodake, G.S.,Maile, N.C.,Kadam, A.A.,Lee, Dae Sung,Rath, M.C.,Fulari, V.J. Elsevier 2018 Ultrasonics sonochemistry Vol.40 No.1
<P><B>Abstract</B></P> <P>This paper reports the effect of electron beam irradiation on CuO thin films synthesized by the successive ionic layer adsorption and reaction (SILAR) method on copper foil for supercapacitor and biocompatibility application. Pristine and irradiated samples were characterized by X-ray diffraction, X-ray photoelectron spectroscopy, field emission scanning electron microscopy, transmission electron microscopy, and electrochemical study. Pristine and irradiated CuO films were pure monoclinic phase, with uniform nanostructures over the whole copper foil. After irradiation, CuO samples had formed innovative nanostructures. Biocompatibility of pristine and irradiated CuO samples suggest that CuO sample is non-toxic and ecofriendly. The specific capacitance of pristine and irradiated CuO strongly depends on surface morphology, and CuO electrodes after irradiation showed superior performance than pristine CuO. The highest specific capacitance of the 20kGy irradiated CuO nanoflowers exceeded 511Fg<SUP>−1</SUP> at 10mVs<SUP>−1</SUP> in 1M KOH electrolyte. Irradiated CuO samples also showed lower ESR, and were superior to other report electrical energy storage materials.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Novel route for the synthesis of pure CuO thin films. </LI> <LI> Different nanostructure of pure CuO and irradiated CuO electrode. </LI> <LI> 20kGy irradiated CuO electrode offer high surface area. </LI> <LI> 20kGy irradiated CuO electrode shows excellent supercapacitive properties. </LI> </UL> </P>
Photovoltaic properties of nanocrystalline SnSe-CdS
Shinde, D.V.,Min, S.K.,Sung, M.M.,Shrestha, N.K.,Mane, R.S.,Han, S.H. North-Holland 2014 Materials letters Vol.115 No.-
We report for the first time, a high performance photovoltaic cell utilizing earth abundant absorber SnSe, fabricated in thin film form by electrodeposition technique. A solid state device fabricated using CdS as window layer exhibited 0.8% efficiency while using a polysulfide electrolyte in presence of platinum counter electrode exhibited 1.4% solar to electric power conversion efficiency.
Shinde, Pragati A.,Seo, Youngho,Ray, Chaiti,Jun, Seong Chan Elsevier 2019 ELECTROCHIMICA ACTA Vol.308 No.-
<P><B>Abstract</B></P> <P>The rational design and development of highly conductive hierarchical nanostructured materials are of great importance to improve the electrochemical performance of supercapacitors. Great efforts have been committed to the development of positive electrodes for asymmetric supercapacitors (ASC). However, it is still necessary to develop better negative electrodes for practical applications. In present investigation, a multi-walled carbon nanotubes-tungsten trioxide (MWCNT-WO<SUB>3</SUB>) hybrid nanostructure is prepared as a negative electrode for ASC. The MWCNT-WO<SUB>3</SUB> hybrid electrode is prepared using a simple two-step approach, which involves coating of MWCNTs on carbon cloth substrates followed by hydrothermal treatment to deposit WO<SUB>3</SUB> nanorods on the MWCNT-coated carbon cloth. The MWCNT-WO<SUB>3</SUB> hybrid electrode exhibits a maximum specific capacitance (areal capacitance) of 429.6 F g<SUP>−1</SUP> (1.55 F cm<SUP>−2</SUP>) and capacity retention of 94.3% after 5000 cycles, which are higher than the 155.6 F g<SUP>−1</SUP> (0.43 F cm<SUP>−2</SUP>) and 84.9% shown by pristine WO<SUB>3</SUB> in 1 M LiClO<SUB>4</SUB> electrolyte. A flexible all-solid-state ASC is self-assembled with MWCNT-WO<SUB>3</SUB> as a negative electrode, MnO<SUB>2</SUB> as a positive electrode, and PVA-LiClO<SUB>4</SUB> as a gel electrolyte. The MnO<SUB>2</SUB>//MWCNT-WO<SUB>3</SUB> ASC achieve specific capacitance of 145.6 F g<SUP>−1</SUP> at a current of 2 mA and specific energy of 39.63 Wh kg<SUP>−1</SUP> at a specific power of 546 W kg<SUP>−1</SUP>. Specifically, the ASC exhibits superior long-term cycling stability (77% over 10000 cycles) and excellent mechanical flexibility with less capacitance loss. These remarkable results demonstrate the potential of using MWCNT-WO<SUB>3</SUB> hybrid nanostructures for the fabrication of high-performance energy storage devices.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Hexagonal WO<SUB>3</SUB> nanorods are uniformly grown on MWCNT coated carbon cloth. </LI> <LI> MWCNT-WO<SUB>3</SUB> hybrid exhibits high specific capacitance of 429.6 F g<SUP>−1</SUP> at 2 mA cm<SUP>−2</SUP>. </LI> <LI> MWCNT-WO<SUB>3</SUB> hybrid maintains 94.3% initial capacitance over 5000 cycles. </LI> <LI> Flexible asymmetric supercapacitor shows high specific energy of 39.63 Wh kg<SUP>−1</SUP>. </LI> </UL> </P>
Shinde, Pritamkumar V.,Ghule, Balaji G.,Shinde, Nanasaheb M.,Xia, Qi Xun,Shaikh, Shoyebmohamad,Sarode, A. V.,Mane, Rajaram S.,Kim, Kwang Ho The Royal Society of Chemistry 2018 New journal of chemistry Vol.42 No.15
<P>The acetone gas sensor and electrochemical supercapacitor applications of bismuth oxide (Bi2O3) nanostructures, synthesised using a facile and cost-effective quaternary-beaker mediated successive ion transfer wet chemical method and deposited onto soda-lime-glass (SLG) and Ni-foam substrates, respectively, are explored. The as-deposited Bi2O3 nanostructures on these substrates exhibit polycrystalline nature and a slight change in their surface appearance (<I>i.e.</I> upright-standing nanoplates on SLG and a curvy nanosheet structure on Ni-foam), suggesting the importance of the deposition substrate in developing Bi2O3 morphologies. The Bi2O3 nanoplate gas sensor on the SGL demonstrated a room temperature sensitivity of 41%@100 ppm for acetone gas, whereas the nanosheet structure of Bi2O3 on the Ni-foam elucidated a specific capacitance of 402 F g<SUP>−1</SUP> at 2 mA cm<SUP>−2</SUP>, long-term cyclability, and rate capability with moderate chemical and environmental stability in a 6 M KOH electrolyte solution. The Bi2O3//graphite pencil-type asymmetric supercapacitor device revealed a specific capacitance as high as 43 F g<SUP>−1</SUP>, and an energy density of 13 W h kg<SUP>−1</SUP> at 793 W kg<SUP>−1</SUP> power density, turning a light emitting diode ON, with considerable full-brightness light intensity, during the process of discharging.</P>
Shinde, Manish,Qureshi, Nilam,Rane, Sunit,Ahn, Chisung,Kim, Taesung,Amalnerkar, Dinesh American Scientific Publishers 2018 Science of advanced materials Vol.10 No.1
<P>Facile microwave assisted solvothermal synthesis of cobalt oxide (Co3O4) generating nanorods and submicron brick like structures is presented. The reaction was accomplished within 20 min and was followed by calcination at 400 degrees C for 2 h. The microwave solvothermal reaction time plays a crucial role in the evolution of the structural and morphological features of the final product. A change of 5 min in reaction time may alter the morphology from nanoscale 1D to submicron scale 3D form. Such bottom-up tunable morphological features can be useful for the fabrication of gas sensors, supercapacitors and Li-ion batteries.</P>
Shinde, Vijay Vilas,Lee, Seung Min,Oh, Jeong Su,Lim, Kwon Taek,Jeong, Yeon Tae Informa UK (TaylorFrancis) 2016 Synthetic communications Vol.46 No.13
<P>An ultrasound-promoted, environmentally benign, efficient procedure has been developed for the synthesis of biologically active tetrahydro-1H-indol-4(5H)-one using heterogeneous BrOnsted base silica sodium carbonate (SSC) as a catalyst under solvent-free conditions. In comparison to the conventional methods, this efficient green protocol provides remarkable advantages such as good to excellent yields, shorter reaction time, low cost, and easy workup procedure and bypasses the use of hazardous transition-metal catalysts and organic solvents. [GRAPHICS] .</P>
Shinde, S.K.,Kim, D.-Y.,Lee, D.S.,Ghodake, G.S.,Kadam, A.N.,Fulari, A.V.,Nawaz, Mohsin,Shahzad, Asif,Rath, M.C.,Fulari, V.J. Elsevier 2018 Colloids and surfaces. B, Biointerfaces Vol.164 No.-
<P><B>Abstract</B></P> <P>In this paper, we chemically synthesized interconnected nanoflake-like CdS thin films for photoelectrochemical solar cell applications and subsequently irradiated them with electron beam irradiation at various doses of irradiation. The as-synthesized and irradiated samples were characterized by means of X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), high-resolution transmission electron microscopy (HR-TEM), and electrochemical measurements. XRD and XPS results confirmed the formation of CdS with a hexagonal crystal structure. FE-SEM and HR-TEM studies confirmed the photoelectrochemical performance, which was dependent on the surface morphology. The calculated values for efficiency demonstrated an outstanding photoelectrochemical performance with a fill factor of 0.38 and efficiency of 3.06% at 30 kGy. The high photoelectrochemical performance may be due to the interconnected nanoflake-like nanostructure and higher active surface area of the CdS samples. These results show that the electron beam irradiation is capable as an electrode for photoelectrochemical solar cells.</P> <P><B>Highlights</B></P> <P> <UL> <LI> First time reported, modified CdS using electron beam irradiation for Solar cell. </LI> <LI> Different size nanostructure of CdS. </LI> <LI> After irradiation CdS sample shows provide more surface area. </LI> <LI> 30 kGy irradiated CdS sample shows excellent solar cell application. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Fill factor/Power conversion efficiency Vs different irradiations doses, pristine and electron irradiated, at 10 kGy, 20 kGy, and 30 kGy.</P> <P>[DISPLAY OMISSION]</P>
Shinde, V.V.,Jeong, Y.T. Pergamon Press ; Elsevier Science Ltd 2016 Tetrahedron letters: the international organ for t Vol.57 No.33
A green and efficient procedure has been developed for the synthesis of densely functionalized tetrahydroindazolo[3,2-b]quinazoline catalyzed by iron fluoride under sonication in solvent-free condition. In comparison to the conventional methods, this efficient green protocol provides remarkable advantages such as good to excellent yields, shorter reaction time, low cost, easy work-up procedure, and bypass for use of solvent and column chromatography. One of the important and interesting advantages of this methodology compared to previous method is that acyclic 1,3-dicarbonyl also gives the desired product which was not possible using the previously reported methodologies.