Kosuke Wakata, Md. Saidul Islam, Mohammad Razaul Karim, Kazuto Hatakeyama et al.
The role of hydrophilic groups in acid intercalated GO for proton conduction has been justified. The higher extents of adsorbed water due to the presence of hydrophilic groups are primarily responsible for offering enhanced proton conductivity.
Nurun Nahar Rabin, Jannatul Morshed, Hashi Akhter, Md. Saidul Islam et al.
Abstract Surface modification of Zinc oxide nanoparticles (ZnO) with γ-aminopropyltriethoxy silane (APTES) was investigated. Successful surface modification of the nanoparticles was confirmed experimentally by X-ray Photoelectron Spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR)...
Nurun Nahar Rabin, Shintaro Ida, Mohammad Razaul Karim, Md. Saidul Islam et al.
, an amazingly high value compared to that of similar GO composites and other common dielectric materials. As a consequence, we considered application of the hybrids as super dielectric materials in high capacitance supercapacitors. The route to high capacitance involves the variation of oxygen vaca...
Mayu Tsutsumi, Md. Saidul Islam, Mohammad Razaul Karim, Nurun Nahar Rabin et al.
Abstract In contrast to monofunctional electrocatalysts for oxygen evolution reaction (OER), hydrogen evolution reaction (HER) or oxygen reduction reaction (ORR), trifunctional catalysts for simultaneously generating H2, O2 and H2O provide a crucial means for improving the overall efficiency of wate...
Nurun Nahar Rabin, Hitomi Ohmagari, Md. Saidul Islam, Mohammad Razaul Karim et al.
Conversion of solar energy into hydrogen is one the most promising renewable energy technology which is stimulated after detection of increasing global energy consumption and climate changes by the emission of fossil fuel. Photocatalytic water splitting use semiconductor materials having the electro...
Nurun Nahar Rabin, Mohammad Razaul Karim, Md. Saidul Islam, Hitomi Omagari et al.
Proton conductivities of oxidized fullerenes from different types of oxidizing agents were measured. Among all, NaOH treated fullerenes were showed higher proton conductivity.
Mohammad Razaul Karim, Md. Saidul Islam, Nurun Nahar Rabin, Ryo Ohtani et al.
The aging effect on the proton conductivity of graphene oxide (GO) is investigated. Characterizations of oxygenated functional groups and measurement of the proton conductivity have been performed using freshly prepared GO and the same sample after preserving for three years under ambient conditions...
Yuta Shudo, Md. Saidul Islam, Mohammad Razaul Karim, Nurun Nahar Rabin et al.
Graphene oxide (GO) shows high proton conductivity (≈10 −4 Scm −1 ), excellent mechanical stability, and electrical insulation property, which makes it an ideal candidate for use as a proton conducting solid state electrolyte. The prospects of using GO as single phase solid electrolyte in an all sol...
Mohammad Razaul Karim, Md. Saidul Islam, Nurun Nahar Rabin, Hiroshi Takehira et al.
Abstract Within the nanopores, junctions and interlayer void space (IVS) in graphene oxide film (GOf), we report that IVS function as the key semipermeable site during sieving. The GOf could filter only dye molecules having nanometer‐ranged dimensions. Tinier hydrated ions with angstrom‐ranged dimen...
Md. Saidul Islam, Mohammad Razaul Karim, Saiful Islam, Jaekook Kim et al.
Abstract A highly stable composite from in situ growth of silicon oxycarbide phases (SiOC) within reduced graphene oxide (rGO) has been synthesized. The resulted SiOC/rGO anode exhibits high porosity, reversible Li intercalation capacity and a cycling stability of 507 mAhg −1 at 100 mAg −1 (50 cycle...
Md. Saidul Islam, Mohammad Razaul Karim, Nurun Nahar Rabin, Ryo Ohtani et al.
A stable single-phase mixed electron/proton conductor with excellent capacitance from oxygen-functionalized porous carbon (OPC) has been presented herein. Electrochemical study suggested that at room temperature and 90% RH the values of electronic and protonic conductivity of OPC are 1.68 × 10−3 and...
MST Farida Perveen, Nurun Nahar, Farhat Jahan Chowdhury, Rabindra Osti
This brief shows how Bangladesh can improve development planning and boost resilience by comprehensively analyzing climate and disaster risk to better calculate possible economic losses and implement effective adaptation measures.
Yuta Shudo, Md. Saidul Islam, Mohammad Razaul Karim, Nurun Nahar Rabin et al.
The cover picture shows the solid state battery where graphene oxide (GO) is used as proton conducting solid electrolyte. Respective discharge capacity and power density of the cell is found to be 360 μA h and 19.5 mW kg−1 at a constant current drain of 3 μA under experimental condition. GO based pr...