- Developing Helical Carbon Functionalized Chitosan-based Loose Nanofiltration Membranes for Selective Separation and Wastewater Treatment
S.K. Nataraj, Mahaveer Halakarni and Team developed has published original article in Chemical Engineering journal where Team developed highly water stable biopolymer-based loose nanofiltration membrane is prepared, wherein the selective permeability of salt and dyes is governed by judicial utilization of bio-based highly oxygenated carbon helices as fillers.
- Prof. Chandra Sekhar Rout’s group and collaborators reviewed spinel MnCo2O4-based materials for energy storage and conversion applications. In this review, the use of low cost and abundant multifunctional materials for the development of supercapacitor devices and batteries were summarized. Completely, the design of electrocatalysts for water splitting and capable to proportionate the tetra-electronic process of oxygen reduction reaction are reviewed, including the main strategies in the preparation of these materials and considering their key multifunctional role in the way to a more sustainable society.
- B.M. Nagaraja and Dr. Arvind H. Jadhav group published a research article in Chemosphere 2021, 281, 130988 in which they reported on Engineered Nano-Foam of Tri-Metallic (FeCuCo) Oxide Catalyst for Enhanced Hydrogen Generation via NaBH4 Hydrolysis.
- Dr. Siddappa A. Patil and his group published research article in J. Environ. Sci. 2021, 101, 189-204 in which they reported efficient and recyclable palladium enriched magnetic nanocatalyst for reduction of toxic environmental pollutants such as toxic 4-nitrophenol (4-NP), hexavalent chromium (Cr(VI)), methylene blue (MB) and methyl orange (MO) at room temperature in aqueous media.
- Bose et al. Adv. Synth. Catal. 2021, 363, DOI: 10.1002/adsc.202001616
A table of contents entry:
Shubhankar Kumar Bose et al. developed an efficient, easy to recover and reusable nano-ferrite-supported Cu nanoparticles (Fe-dopamine-Cu NPs) catalyzed anti-Markovnikov-selective hydroboration of alkenes and β-borylation of α,β-unsaturated ketones and ester. This work was published in Adv. Synth. Catal. and designated as Very Important Publication (VIP) & featured in the inside cover of the ASC special issue on boron.
- B.M. Nagaraja and Dr. Arvind H. Jadhav group published research article in New Journal of Chemistry 2021, 45, 5659-5681 in which they reported on Chemoselective hydrogenation of cinnamaldehyde over a tailored oxygen-vacancy-rich [email protected] catalyst
- Mahesh Padaki and his group developed Fe doped Al2O3 nanoparticles by novel and sustainable solution combustion approach afterwards nanoparticles were incorporated into the polymeric matrix. The fabricated mixed matrix membranes had essential role in water purification by enhancing antifouling property along with that the trade-off relationship between the selectivity and productivity. These results are published in Chemosphere.
- Dr. Arvind H. Jadhav and his group for the first-time explored basicity controlled MgCo2O4 nanostructures as a competent heterogeneous catalytic system for fixation of CO2 into epoxides and form cyclic carbonates at atmospheric pressure. The effect of different interlayer anions (chloride, nitrate, acetate and sulphate) on morphology, surface area and exposed Lewis basic (O2-) sites were studied in detail. Further, catalytic activity studies revealed that [MgCo2O4]-[Cl-] catalyst in presence of base gave the most outstanding results under mild reaction conditions (100 ℃, 1 atm, 12 h) and various reaction parameters were investigated to optimize reaction conditions. Interestingly, the catalyst also showed good tolerance for a broad substrate scope and could be easily recycled for eight consecutive cycles. These results are published in CHEMICAL ENGINEERING JOURNAL.
- S.K. Nataraj et al have formulated "Fe-Al based nanocomposite reinforced hydrothermal carbon: Efficient and robust absorbent for anionic dyes" and the results were published in Chemosphere
- Dr. Siddappa A. Patil and his group developed a green and sustainable approach for the synthesis of palladium nanoparticles decorated cellulose fibers as dip catalyst by utilizing bio-waste resources. The fabricated dip catalyst had essential key features such as eco-friendly, cost effective, easy availability, highly active and selective towards Suzuki-Miyaura cross-coupling reactions. The dip catalyst shows excellent catalytic performance and great tolerance for synthesis of various functional groups substituted biaryls under green reaction conditions. Dip catalyst can be reused more than 15 recycles in cross-coupling reactions without lacking in catalytic activity. The details can be found in the published article in “Cellulose”.
- S.K. Nataraj et al., Published original article in Green Chemistry 2020,22, 2381 – 2387 in which they explore novel washing solutions for commercial RO membranes, which not only the clean the membrane but also enhances the overall performance.
- B.M. Nagaraja and his group reports successfully carryout 1,4-butanediol dehydrogenation and benzaldehyde hydrogenation simultaneously over ceria-alumina supported copper (Cu/CeO2-Al2O3) catalyst. In this concern, 10 wt.% of Cu supported on CeO2-Al2O3 (3:1 ratio) was synthesized using wet impregnation method. The best results were obtained with 10 wt.% of Cu supported on CeO2-Al2O3 (3:1 ratio) catalyst with benzaldehyde conversion of 34% and 84% selectivity of benzyl alcohol. The conversion of 1,4-butanediol was seen to be 90% with around 95% selectivity of γ-butyrolactone. In terms of permanence, the Cu/CeO2-Al2O3 (10CCA) catalyst was quite steady and showed stable activity up to 24 h in time on stream profile.
- Dr. Shubhankar Kumar Bose et al. Green Chem., 2020, 22, 2799–2803. An efficient, easy to recover and reusable Cu nanocatalyst (Fe-DOPA-Cu) system has been developed for the borylation of alkyl halides, including benzyl chlorides and bromides with diboron reagents.
- B.M. Nagaraja and his group reports successfully carryout Mesoporous copper based ceria-alumina catalysts prepared by wet impregnation method were used for dehydrogenation of 1,4-butanediol to γ-butyrolactone. The reaction was carried out under vapour phase conditions in the temperature range of 240–300 °C. The better activity results observed using 10 wt% copper supported over ceria-alumina (75:25) catalyst wherein 1,4-butanediol showed a conversion of 100% and selectivity towards γ- butyrolactone was 99% at 240 °C. The activity was due to synergistic effect of alumina and ceria support along with the presence of highly basic sites and other physico-chemical properties. In terms of stability, the catalyst is stable activity upto 24 h.
- Nataraj and Dibyendu et al published research article in Chemical Engineering Journal on designed multifunctional nanomaterial via ultrafast synthesis (15 Seconds) protocol to produce exfoliated manganese oxides for water purification and energy storage. (Chemical Engineering Journal 379 (2020) 122327.)
- B.M. Nagaraja and his group reports successfully synthesized copper-cobalt double hydroxide precursor and the resultant CuCo2O4 spinel catalyst. The CuCo2O4 spinel catalyst was then tested for its application in hydrogen generation from NaBH4 hydrolysis by performing the reaction using 10 wt% of CuCo2O4 spinel catalyst and 0.5 g NaBH4 at room temperature. The CuCo2O4 spinel catalyst with tailored architecture displayed high catalytic activity with H2 generation rate of 1370 mL min-1 g-1 (1438 mL in 21 min). Further, recyclability study of CuCo2O4 spinel catalyst was also performed which displayed good catalytic activity and stability even after five successive recycles.
- Dr. Chandra Sekhar Rout’s group and collaborators reported the fabrication of 3D self-supported heterogeneous NixSey cubic-orthorhombic nanocrystals grown by a facile one-step chemical vapour deposition (CVD) approach on Ni foam substrates for high performance supercapacitor electrode applications. For the first time crystalline NixSey is synthesized by CVD, and demonstrates outstanding electrochemical performances with high specific capacitance of 1333 Fg-1 at a current density of 27 Ag-1, ultra-high energy density (105 W h Kg-1) at power density (54 kW Kg-1) and an excellent operational stability. The details can be found in the published article in “Dalton Transactions” and is highlighted in the cover page of the journal.
- Dr. Siddappa A. Patil and his group developed a green and sustainable cellulose-based dip catalyst. The activity of the dip catalyst was studied for Suzuki-Miyaura cross-coupling reaction and was found to give excellent conversion with 15 recycles. Further, the activity of dip catalyst in C5-arylation of 2-substituted thiophenes was evaluated for which promising yields were obtained.
Dr. Arvind H Jadhav, B.M. Nagaraja and his group reports successfully synthesized hollow marigold CuCo2O4 spinel microspheres by a facile solvothermal method and employed as catalyst for the chemical fixation of CO2 and epoxide into cyclic carbonate under solvent-free conditions. The model reaction of styrene oxide and CO2 using 50 mg CuCo2O4 as catalyst and 8 mol% of TBAI as base was found to be an efficient catalytic system at 80 °C, 20 bar and 3 h of reaction time. A high conversion of 94% and selectivity of 94% was obtained under the mild optimized reaction conditions.
S.K. Nataraj, D. Mondal and their team developed novel functional nanocomposite materials for treating surface water which adulterated by hazardous pollutants such as dyes, pharmaceutical 3 wastes, surfactants, heavy metals, hormones, etc. The same as published in ACS Sustainable Chemistry & Engineering.