@article{vook_dey_yang_nimlos_park_han_sagues_2023, title={Sustainable Li-ion anode material from Fe-catalyzed graphitization of paper waste}, volume={73}, ISSN={["2352-1538"]}, url={https://doi.org/10.1016/j.est.2023.109242}, DOI={10.1016/j.est.2023.109242}, abstractNote={A novel method for the conversion of paper towel waste to biographite anode material is developed and optimized for use in Li-ion batteries. The surge in demand for Li-ion battery anode materials coupled with the unsustainable and inefficient methods of producing battery-grade graphite necessitate alternative carbon feedstocks and graphitization technologies. Paper waste (PW) is identified as a suitable carbon feedstock for iron-catalyzed graphitization due to its sustainability, low cost, low ash content, and ample supply for the intended end use. A Box Behnken experimental design for statistical optimization is pursued for untreated and pre‑carbonized PW with factors of temperature (1100–1300 °C), hold time (1–5 h), and iron catalyst loading (0.5–1.5× fixed carbon content) with biographite crystal size as the primary response variable. Temperature and iron catalyst loading are found to be significant factors, whereas hold time is found to be insignificant. Reversible capacities of the biographite anodes are found to be 340–355 mAh g−1 with 99 % capacity retention over 100 cycles, indicating good electrochemical performance relative to commercial graphite anodes. The initial Coulombic efficiency of untreated and pre‑carbonized biographites, however, are 77 % and 75 %, respectively, suggesting parasitic reactions including electrolyte decomposition.}, journal={JOURNAL OF ENERGY STORAGE}, author={Vook, Trevor and Dey, Shaikat Chandra and Yang, Junghoon and Nimlos, Mark and Park, Sunkyu and Han, Sang-Don and Sagues, William Joe}, year={2023}, month={Dec} }
 @article{hossain_mishra_tiwari_pant_dey_tiwari_saha_rahaman_shukla_tiwari_et al._2023, title={Thermally induced Fe<sub>2</sub>O<sub>3</sub> spikes decorated Ag/Fe<sub>2</sub>O<sub>3</sub> nanocomposite fabrication for anti-bacterial and anti-cancer activities}, volume={5}, ISSN={["2523-3971"]}, DOI={10.1007/s42452-023-05599-y}, abstractNote={Abstract}, number={12}, journal={SN APPLIED SCIENCES}, author={Hossain, Md. Kaium and Mishra, Anshuman and Tiwari, Aanshi and Pant, Bishweshwar and Dey, Shaikat Chandra and Tiwari, Ayushi and Saha, Otun and Rahaman, Md. Mizanur and Shukla, Yogesh R. and Tiwari, Ashutosh and et al.}, year={2023}, month={Dec} }
 @article{ahmed_dey_mustary_ashaduzzaman_2023, title={pH regulated lactose inspired fabrication of zinc oxide nanoparticles for insulin sensing by LSPR absorption}, volume={9}, ISSN={["2405-8440"]}, DOI={10.1016/j.heliyon.2023.e18153}, abstractNote={Nanostructured metal oxide particles with diversified morphologies are in high demand in nanotechnology. The particle size, shape, and overall geometry mainly depend on the fabrication method. This study reports synthesis of zinc oxide nanoparticles (ZnO NPs) from zinc nitrate hexahydrate [Zn(NO3)2.6H2O] precursor in aqueous media at 65 °C by using lactose from cow milk as a reducing agent and regulating pH from 6 to 10. UV-visible absorption gave maximum absorbance (λmax) at 371-375 nm in ethanol for localized surface plasmon resonance (LSPR), FTIR exhibited bands at ca. 439-481 cm-1 for stretching mode Zn-O bonds, and XRD peaks at 2 θ values at 31.8, 34.45, and 36.28° confirmed the fabricated ZnO NPs. The XRD spectra also indicated that the ZnO crystallite (20-30 nm) has a hexagonal wurtzite structure. The average particle sizes measured by DLS were ca. 50-837 nm, and SEM microphotographs demonstrated the morphology of ZnO NPs with a hexagonal, rod-shaped, or spike-like structure. The ZnO NPs were used to investigate the LSPR absorption at various concentrations of insulin, ranging from 2.5 μM to 50 μM. The ZnO NPs fabricated at pH 7 and 10 showed better insulin sensing performance with high precision. The synthesis approach of ZnO NPs with variable morphologies would play a significant function in biomedical science especially real time monitoring of glucose for efficient management of diabetes.}, number={8}, journal={HELIYON}, author={Ahmed, Nasim and Dey, Shaikat Chandra and Mustary, Nusrat and Ashaduzzaman, Md}, year={2023}, month={Aug} }
 @article{hossain_rashid_lata_dey_sarker_shamsuddin_2022, title={Fabrication of Novel Nanohybrid Material for the Removal of Azo Dyes from Wastewater}, volume={6}, ISSN={["2504-477X"]}, url={https://www.mdpi.com/2504-477X/6/10/304}, DOI={10.3390/jcs6100304}, abstractNote={This study attempted to harness the dual benefit of adsorption and photocatalytic degradation for efficiently removing a model anionic azo dye, Orange G, from an aqueous solution. For this purpose, a series of bifunctional nanohybrids containing different proportions of naturally occurring biopolymer chitosan and ternary photocatalyst made of kaolinite, TiO2, and ZnO were prepared through the dissolution of chitosan in acid and subsequent deposition on ternary photocatalyst. The characterization through Fourier-transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), and energy dispersive X-ray spectrum (EDS) have confirmed the successful fabrication of nanohybrids from TiO2 and chitosan. The adsorptive separation of Orange G from the aqueous solution and subsequent degradation under solar irradiation was thoroughly studied by recording the λmax value of dye in the ultraviolet–visible (UV-Vis) spectrophotometer at various operating conditions of pH, dye concentration, contact time, and compositional variation. The nanohybrid (TP0.75CS0.25) fabricated from 75% ternary photocatalyst (w/w) and 25% chitosan (w/w) removed 97.4% Orange G within 110 min at pH 2.5 and 10 mg/L dye concentration. The relative contribution of chitosan and ternary composite on dye removal was understood by comparing the experimental results in the dark and sunlight. Recyclability experiments showed the suitability of the nanohybrid for long-term repeated applications. Equilibrium experimental data showed a better correlation with the Langmuir isotherm and pseudo-second-order kinetic model. The rapid and nearly complete removal capacity, long-term reusability, and simple fabrication technique make this novel nanohybrid a promising advanced material for removing hazardous azo dyes from industrial effluents.}, number={10}, journal={JOURNAL OF COMPOSITES SCIENCE}, author={Hossain, Mohammad Rahat and Rashid, Taslim Ur and Lata, Nadira Parvin and Dey, Shaikat Chandra and Sarker, Mithun and Shamsuddin, Sayed Md}, year={2022}, month={Oct} }