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Manoj Rajpure,김헌 한국고분자학회 2021 한국고분자학회 학술대회 연구논문 초록집 Vol.46 No.2
In the present work superamphiphilic porous hydrogel membranes are prepared for efficient oil-water separation. A monolith, highly porous, and mechanically robust scaffold is synthesized for the adsorption of pollutants from both aqueous and non-aqueous media with facile separation and regeneration. Methylcellulose-tannic acid complex particles were prepared and systematically decorated on the surface of interpenetrating polymer network scaffold via Pickering emulsion. The hydroxyl and carboxyl groups of tannic acid, alginate, and polyacrylic acid created hydrogen bonding, electrostatic interaction, acid-base interaction, and π-π stacking. Adsorption/absorption kinetics and mechanisms are examined under aqueous and non-aqueous environment. The effects of various processing parameters for Pickering emulsion and scaffolding on dual pore membrane system are also examined. The overall performance is evaluated in oil-water separation.
Fabrication of Fe:CdSe solar rechargeable (semiconductor–septum) storage cells
Pawar, S.M.,Moholkar, A.V.,Rajpure, K.Y.,Kim, J.H.,Lokhande, C.D.,Bhosale, C.H. Elsevier 2009 Current Applied Physics Vol.9 No.5
<P><B>Abstract</B></P><P>The Fe:CdSe thin films have been electrodeposited potentiostatically onto the stainless steel substrates, from non-aqueous bath containing (CH<SUB>3</SUB>COO)<SUB>2</SUB>·Cd·2H<SUB>2</SUB>O, SeO<SUB>2</SUB> and FeCl<SUB>3</SUB>. The solar rechargeable (semiconductor–septum) storage cell is fabricated with the configuration C|1M polysulphide|<I>n</I>-Fe:CdSe|stainless steel||1M FeCl<SUB>3</SUB> or 1M K<SUB>4</SUB>Fe(CN)<SUB>6</SUB>|C. The charging and discharging modes are studied and discussed. The comparison of FeCl<SUB>3</SUB> and K<SUB>4</SUB>Fe(CN)<SUB>6</SUB> based solar rechargeable storage cells, showed that FeCl<SUB>3</SUB> based storage cell is superior than that of K<SUB>4</SUB>Fe(CN)<SUB>6</SUB> based electrolyte because relatively charging time is minimum and discharging time is maximum. Thus it is concluded that the storage cell works not only as a generator but also as the storage of electricity.</P>
Fabrication of Fe:CdSe solar rechargeable (semiconductor–septum) storage cells
S.M. Pawar,A.V. Moholkar,김진혁,K.Y. Rajpure,C.D. Lokhande,C.H. Bhosale 한국물리학회 2009 Current Applied Physics Vol.9 No.5
The Fe:CdSe thin films have been electrodeposited potentiostatically onto the stainless steel substrates, from non-aqueous bath containing (CH3COO)2 Cd 2H2O, SeO2 and FeCl3. The solar rechargeable (semiconductor-septum) storage cell is fabricated with the configuration C|1 M polysulphide|n-Fe:CdSe|stainless steel||1 M FeCl3 or 1 M K4Fe(CN)6|C. The charging and discharging modes are studied and discussed. The comparison of FeCl3 and K4Fe(CN)6 based solar rechargeable storage cells, showed that FeCl3 based storage cell is superior than that of K4Fe(CN)6 based electrolyte because relatively charging time is minimum and discharging time is maximum. Thus it is concluded that the storage cell works not only as a generator but also as the storage of electricity.
R. C. Kambale,Y. A. Park,허남정,K. Y. Rajpure,S. S. Suryavanshi 한국물리학회 2011 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.59 No.6
Magnetostrictive-piezoelectric heterostructures show the strong magnetoelectric (ME) interactions that are mediated by mechanical forces. Magnetoelectric particulate composite structures of (0.1, 0.2, 0.3) mol% CoMn<SUB>0.2</SUB>Fe_(1.8)O_4– (0.9, 0.8, 0.7) mol% BaZr_(0.08)Ti_(0.92)O_3 has been prepared by a solid-state reaction. X-ray diffractometry patterns show variation in the amount of intensity of the spinel phase with ferrite content. The effect of constituent phase variation on the B–H hysteresis behavior and the dielectric properties was examined. The dielectric constant shows the usual dielectric dispersion behavior with increasing frequency which is due to the Maxwell–Wagner type surface interfacial polarization. The dynamic transverse ME coefficient α_(ME) of the composites has been measured at 850 Hz. The strong dependence of ME response on the content of ferrite phase was observed. The paper presents the investigations on ME composites for their dielectric, magnetic and ME properties. The results are discussed with proper scientific reasons along with the applicability of the materials in ME sensing devices.
Thin film photocatalysis for environmental remediation: A status review
R.S. Pedanekar,S.K. Shaikh,K.Y. Rajpure 한국물리학회 2020 Current Applied Physics Vol.20 No.8
This review accounts, various metal oxide and metal sulfide thin films available for photodegradation of several organic compounds. Due to difficulties in recycling and to avoid rigorous recollection of powder catalysts, the thin film catalyst are gaining rapid attention for photocatalytic applications. The semiconducting thin films are growing as promising photocatalyst for water treatment. This review focuses mainly on the photocatalytic activity of metal oxide thin films in terms of its stability, charge transport and absorption properties. Thin film photocatalyst provides the increased efficiency and cost reduction of device. Furthermore, this review summarizes some key factors regarding the enhancement in photocatalytic performance of thin films.