Editorial
Environmental & Green Materials
Ashutosh Tiwari
Abstract
The United Nations Sustainable Development Goals (UNSDGs) and the European Green Deal (EGD) are two examples of global sustainability initiatives that trust strongly on research and development (R&D) activities to achieve their targets. This article explores the synergies between R&D world links ...
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The United Nations Sustainable Development Goals (UNSDGs) and the European Green Deal (EGD) are two examples of global sustainability initiatives that trust strongly on research and development (R&D) activities to achieve their targets. This article explores the synergies between R&D world links and decentralised labs, highlighting their capacity to foster sustainable innovations through international collaborations and the exchange of ideas. Climate efficient materials research is key element of sustainable ambition and distributed facilities offer a better chance of leading circular technology for green world. The participation from developed and developing countries in clean R&D are needed to be promoted through multi folds cooperation. The worldwide industrial R&D utilizes cluster research collaboration which should be focused on net-zero innovation for raising product technology readiness levels (TRLs). In addition, advancements in the green know-hows are helpful in deciding the direction of technology development and transition for climate neutral infrastructures.
Review Article
Structural & Engineering Materials
Rajni Narang; Priya Vashishth; Himanshi Bairagi; Rashmi Sehrawat; Sudhish K. Shukla; Bindu Mangla
Abstract
This review highlights the overview of recent trends in the usage of drugs as corrosion inhibitor for metal/alloy surfaces, particularly mild steel, aluminum, and copper in acidic, basic, or saline medium. The drug molecules generally containing atom having lone pair of electrons such as nitrogen (N), ...
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This review highlights the overview of recent trends in the usage of drugs as corrosion inhibitor for metal/alloy surfaces, particularly mild steel, aluminum, and copper in acidic, basic, or saline medium. The drug molecules generally containing atom having lone pair of electrons such as nitrogen (N), oxygen (O), Sulphur (S) and phosphorus (P) as well as a hydrophobic moiety that will repel aqueous corrosive species away from the metal surface and a mediately with an aromatic ring, unsaturation that are observed to be a significant component of extremely efficient inhibitors. The efficacy of various drugs, including antipyretics, analgesics, antibiotics, anti-depressants, and anti-histamines, is studied using weight loss, electrochemical impedance spectroscopy, potentiodynamic polarization and surface analysis techniques. Drugs molecules work by producing a layer on the metal's surface and can serve as anodic, cathodic, or mixed inhibitors. This protective film formed results of strong interactions such as free- orbital adsorption, chemisorption, and electrostatic adsorption, which prevent corrosive species from attacking the metal surface. Recent concerns and future prospective for further research and development to achieve more efficient and environmentally friendly inhibitors are additionally highlighted.
Research Article
Carbon Materials and Technology
Debashis Chakraborty; Sourav Singha Roy; Sriparna Sarkar
Abstract
The production of aliphatic polyesters (via ROP of cyclic esters) and aliphatic polycarbonates (via ROCOP of CO2/epoxide) is an important synthetic pathway for the production of biodegradable and biocompatible polymers. The study focuses on the catalytic activity and selectivity of phenoxy-imine based ...
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The production of aliphatic polyesters (via ROP of cyclic esters) and aliphatic polycarbonates (via ROCOP of CO2/epoxide) is an important synthetic pathway for the production of biodegradable and biocompatible polymers. The study focuses on the catalytic activity and selectivity of phenoxy-imine based zinc compounds for the ROP of cyclic esters (rac-LA and -CL) and ROCOP of carbon dioxide and CHO/PO. The monoligated and bisligated zinc compounds have the same coordination number (four) but differed from each other in the binding mode of the ligand to the metal center (tridentate for monoligated and bidentate for bisligated compounds) and thus the compounds adopt different symmetry. For the ROP of rac-LA, the monoligated zinc compounds gave isotactic-enriched PLA while the bisligated zinc compounds gave heterotactic-enriched PLA. For the ROCOP of epoxide/CO2, isotactic-enriched polycarbonates were obtained with a notable difference in catalytic activity with the variation of the number of ligands attached to the zinc center. In addition, a correlation is established between the percentage of carbonate linkage in the polycarbonate chain and the substituent attached to the phenolate core.
Research Article
Thin Films, Materials Surface & Interfaces
Giulia F. da Silva; Jorge Conceição Jr.; Daiane T. da Silva; Everton Dos Santos
Abstract
This study investigates the deposition of hydrogenated diamond-like carbon (DLC) films on SAE 1045 alloy samples using a plasma-enhanced chemical vapor deposition (PECVD) system and evaluates their potential as automotive coatings. Copper doping was performed via a hollow copper cathode to examine its ...
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This study investigates the deposition of hydrogenated diamond-like carbon (DLC) films on SAE 1045 alloy samples using a plasma-enhanced chemical vapor deposition (PECVD) system and evaluates their potential as automotive coatings. Copper doping was performed via a hollow copper cathode to examine its effects on the DLC films. The primary focus was to determine the structural properties, color variations, and friction resistance of the coated samples, with the goal of establishing their applicability in the automotive industry. Raman spectroscopy confirmed the successful deposition of DLC films, while energy dispersive X-ray spectroscopy (EDS) analysis demonstrated the variation in copper atom concentrations in the samples based on the sputtering duration during the doping process. The observed color changes in the DLC films correlated with the copper atom concentrations, with the interference phenomenon and refractive index differences between DLC films and copper proposed as the primary factors influencing color variations. Scratch tests were conducted to evaluate the resistance to friction and delamination of the coated materials compared to conventionally painted steel samples. The results indicated that the DLC-coated materials exhibited higher resistance, with an estimated 15% increase in delamination resistance. The enhanced resistance was hypothesized to result from the high hardness of DLC films and the potential accumulation of nanoparticles in the valleys of the sample surface, reducing irregularities.
Research Article
Nanomaterials & Nanotechnology
Ananya Kashyap; Madhubala Kumari; Sumant Kumar; Samira Nazma; Koel Mukherjee; Dipak Maity
Abstract
Biosynthesized metal oxide nanoparticles are used as nano-fertilizers for sustainable agriculture as they have proven to be promising agents in increasing the germination rates and plant growth rate. Biosynthesis of copper oxide nanoparticles (CuO-NPs) was done for the first-time using extract of Mangifera ...
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Biosynthesized metal oxide nanoparticles are used as nano-fertilizers for sustainable agriculture as they have proven to be promising agents in increasing the germination rates and plant growth rate. Biosynthesis of copper oxide nanoparticles (CuO-NPs) was done for the first-time using extract of Mangifera indica leaves. Effects of as-synthesized CuO NPs on the seed germination of two legume seeds are investigated at different concentrations (0 - 2.5 mg/ml). UV-Vis and EDX analysis confirm the formation of CuO NPs & FESEM images revealed spherical shape of NPs with particle size ranging from 105nm to 155nm. CuO-NPs also revealed to be highly stable in aqueous suspension with zeta potential value -21.1mV. Germination rate, root /shoot growth and protein estimated of Cicer arietinum and Vigna radiata seeds found to be highest at 2.5mg/ml and 1mg/ml concentration, respectively. Negative impact on germination rate and root/shoot growth was observed due to toxic effects when CuO-NPs were applied at higher concentration 2.5mg/ml to Vigna radiata seeds. Thus, it is concluded that optimum concentration of biosynthesized CuO-NPs can be used to enhance the growth of leguminous seeds because of their possible interaction with the proteins and their up-regulation as confirmed by bioinformatics studies and molecular docking of protein.
Research Article
Biomaterials & Biodevices
Ayush Madan; Sanjeev Kumar; Syed Mohsin Waheed
Abstract
Hydrocarbon contamination is one of the major environmental problems due to oil spillage, automobile waste, and other industrial waste. Crude oil is the major source of energy for industrial, agricultural, and domestic use. Indian agriculture is largely dependent upon petroleum-driven technology for ...
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Hydrocarbon contamination is one of the major environmental problems due to oil spillage, automobile waste, and other industrial waste. Crude oil is the major source of energy for industrial, agricultural, and domestic use. Indian agriculture is largely dependent upon petroleum-driven technology for power generation, harvesting and post-harvest processing. Oil spillage occurs at oil wells and rigs during the drilling, production, refining, transport, and storage of petroleum. The release and accumulation of hydrocarbons in the environment is the main cause for concern due to the health hazards it poses to all forms of life and the environment. Commonly used approaches involve physical, biological, and chemical methods. Most of the technologies are expensive and not very efficient to deal with recalcitrant pollutants. The present study deals with the bioremediation of crude oil. The study involved the collection of surface soil of the spillage/contaminated area to isolate and identify the oil-degrading bacteria. Bacteria were isolated and grown on MSM-agar medium containing crude oil as a carbon source in Petri-dishes. The isolated strain of bacteria was effective in the biodegradation of oil in 28 days. The samples were analysed using GC-FID which demonstrated efficient degradation of oil by the isolated microbe. The hydrocarbon degraders were identified as Gram-negative cocci bacteria. The isolated bacteria could serve as a cost-effective and efficient alternative for microbial degradation of hydrocarbon pollutants in soil and water in an environmentally friendly and sustainable manner.
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