Omkar Singh Kushwaha

Bio‐based, green, and sustainable self‐healing anticorrosive coatings derived from renewable bioresources such as vegetable oils have attracted growing interest due to increasing environmental challenges and the need for cost‐effective maintenance strategies. This study introduces Perilla Oil (PO), encapsulated within poly(urea‐formaldehyde) (PUF) microcapsules via an in situ polymerization oil‐in‐water emulsion technique, as an eco‐friendly, efficient self‐healing agent. The microcapsules exhibit robust morphology, size homogeneity, and thermal stability confirmed by optical microscopy, SEM, FTIR, TGA, DSC, and particle size distribution analyses, achieving encapsulation efficiencies exceeding 60.0%. Incorporation of 7.0 wt% PO microcapsules into epoxy coatings facilitates rapid self‐healing of surface cracks within 24 h through auto‐oxidation‐induced polymerization of the released PO. Immersion tests in aggressive saline and acidic environments demonstrate significantly enhanced corrosion resistance, adhesion durability, and coating integrity compared to control samples, which exhibited accelerated corrosion and delamination. The oxidatively polymerized PO effectively acts as an oxygen and moisture barrier, illustrating a novel mechanism for in situ self‐healing protective film regeneration. These environmentally benign coatings have promising industrial potential in sectors including marine infrastructure, automotive, aerospace, and heavy machinery, where sustainable corrosion protection is paramount. Their use contributes to decarbonization efforts and aligns with global sustainability goals. Further development, including scaling production and integrating biodegradable shell materials, could broaden practical applicability and market acceptance of this innovative technology.

Boron-Nitride Nanotubes (BNNTs) are electrical insulators that usually have higher thermal and chemical properties than Carbon Nanotubes. Some of the most exceptional stiffness are shown by BNNTs, which shows potential applications in polymeric composites and ceramics. Such high stiffness also leads to lighter, more affordable, and faster transportation applications for lightweight ballistic armor and applications. When considering BNNTs' possible uses, focusing on their thermal and oxidative stability and their chemical inertness is essential. These properties can be logically used in capsules in which we have to protect nanomaterials that are unstable in the air or can be contaminated easily at standard atmosphere. This study discusses about the current trends, sustainable elucidation of synthesis methods, and prospective applications of boron nitride nanotubes. Through recent advancements, many new technologies are used in synthesizing and applying BNNTs and boron-nitride carbon nanotubes, giving higher yields and keeping the unique properties shown intact which align with the current United Nations Sustainable Development Goals. A balanced approach has been followed in the review to cover all the significant challenges, opportunities and economics of various industry-based production and application models associated with the BNNTs towards carbon neutrality.

Aerogels are novel materials that span the gap between liquids and gases because of their distinctive physical properties, such as high surface area and low thermal conductivity. Aerogels are extremely light, highly porous, and low-density materials, but they may also be made to exhibit mechanical properties like increased stiffness and strength by controlling their feature structures while keeping their relative density low. Due to excellent properties shown by aerogels, they have a lot of different applications and are used in paints, pharmacy, sensors, insulators, acoustics and tank baffles etc. In the recent times, Research and Development have contributed a lot in aerogels but it has not been as successful to industrialise and commercialise a lot of those aerogels such as synthetic and polymer-based aerogels. In this article we will discuss the past, current and future perspectives to overcome such challenges for maximum commercialisation and scale up of aerogels as well as discuss about the properties and applications of different types of aerogels for sustainability and carbon neutrality.

A considerable amount of decarbonization is being driven by multinational corporations and technology companies all over the world as a result of the necessity to reduce and control the emissions of greenhouse gases (GHG) to lower the global carbon footprint. A perspective of the outlook of green hydrogen generation is held through the utilization of AEMs, wind, and PEMECs to establish energy transitional approaches. Anion exchange membrane (AEM) electrolysers overcome the worst problems of conventional types of electrolysers because of their ability to use non-platinum and non-nafion membrane materials, high hydrogen storage density, and compact microcells recommended for large-scale low-carbon systems. Another technique for ultraclean hydrogen production via oxidation is ethanol electrocatalysis in PEMECs. In this study, hydrogen production via water electrolysis with the help of anion-conducting solid polymer electrolytes and a novel integrated inorganic membrane electrode assembly (I2 MEA) for anion exchange membrane (AEM) water electrolysis by using inorganic Mg-Al layered double hydroxides (Mg-Al LDHs) as an ionic conductor were also theoretically and economically investigated and opinionated to produce low-carbon hydrogen.

BNNTs are the promising materials for advanced storage applications because of their excellent mechanical properties, such as high strength and thermal stability. Highly advanced computational techniques were adopted in this work to simulate BNNT-based storage tanks against all environmental factors and other forms of external loads for one year. The present study focuses on mechanical performance and stability of BNNTs-based storage tanks through Finite Element Analysis (FEA) over one-year period, considering the evaluation of total deformation, strain energy, equivalent stress, and equivalent elastic strain. By such analysis concerning the deformation patterns, a detailed insight along with material performance about its deformation under long-period working conditions is obtained. A slight structural compromise throughout the deformation profile verifies BNNT's durability over quite extensive time spans. The strain energy calculations suggest that optimization of storage tanks' energy absorbing capabilities takes place with no strong indicators of fatigue or deterioration in materials. Equivalent stress and elastic strain values are systematically analysed, showing that BNNTs have the stable mechanical behaviour with values remaining within the acceptable limits even after one year of operational stress. This study validates not only the potential of BNNTs for their long-term applications in high-performance storage systems, but also offers an important understanding of the mechanical behaviour under realistic operational conditions that could set the way for future usage in advanced engineering applications.

This research formulated green bio-nanocomposite films via cellulose acetate phthalate (CAPhth) reinforced carboxyl-functionalized multi-walled carbon nanotubes (MWCNTs- COOH) through environmentally friendly solution casting. We explored the influence of different MWCNT content on the composites' thermal stability and mechanical features. Comprehensive characterization confirmed the successful formation of homogeneous films with enhanced dispersion of MWCNTs-COOH in the CAPhth matrix, resulting in improved thermal and tensile performance. These Nanocomposites offer sustainable alternatives to conventional materials, which are in line with the circular economy principle and carbon reduction goals.

The research examines the challenges revolving around young people's social movements, activism regarding sustainability, as well as the accompanying social media aspect, and how social media impacts environmental action. This study focuses on the environmental craze on social media platforms and its impact on young activists aged 16-25. With the advancement of social media, new avenues have opened for participation in sustainability issues, especially for the marginalized, as information moved through transnational networks at lightning speed. Along with specific Formative Visual Storytelling methods, the young leaders of the movement deploy hashtags and other online tools to capture the attention of their peers and decision makers. Challenges persist with "clicktivism" fatigue from the internet, and site limitations. This article contributes to insights on emerging forms of civic activism by explaining how digital natives adapt technology to reframe green activism. The research suggests that effective digital environmental movements integrate online and offline action, make it simple for individuals to get involved, and promote tolerance to algorithmic modifications and climate care among participants.