Melamine-benzaldehyde tris-schiff base as an efficient corrosion inhibitor for mild steel in 0.5 molar hydrochloric acid solution: Weight loss, electrochemical, theoretical and surface studies

Arshad Ifzan,Qureshi Khizar,Lee Shern-Long,Khan Safia,Abid Muhammad Amin,Bokhari Awais,Bahajjaj Aboud Ahmed Awadh,Ahmed Muhammad Naeem 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.10

In the current study, the N,N′,N″-(1,3,5-triazine-2,4,6-triyl)tris(1-phenylmethanimine) (MBSB) condensation product of melamine (triazine) and benzaldehyde was investigated as a mild steel corrosion inhibitor in a 0.5 M HCl. The ability of the synthesized tris-Schiff base to suppress corrosion was evaluated utilizing weight loss measurements and electrochemical techniques. The maximum inhibition efficiency of 94.78%, 93.99% and 93.80% was achieved using 100 ppm of MBSB in weight loss measurements, polarization, and EIS tests, respectively. It was observed that increasing inhibitor concentration enhanced inhibition performance, whereas increasing temperature lowered inhibition performance. The analyses demonstrated that the synthesized tris-Schiff base inhibitor followed the Langmuir adsorption isotherm, and the inhibitor was an effective mixed-type inhibitor having a low cathodic predominance. According to the electrochemical impedance measurements, the Rct values increased with the increase of inhibitor concentration. In addition, theoretical calculations using density functional theory (DFT) were performed to reveal the anticorrosion mechanism. The weight loss and electrochemical assessments were also supported by surface characterization analysis and show a substantial smoothness in the surface morphology.

The epoxy resin system: function and role of curing agents

Aziz Tariq,Haq Fazal,Farid Arshad,Cheng Li,Chuah Lai Fatt,Bokhari Awais,Mubashir Muhammad,Tang Doris Ying Ying,Show Pau Loke 한국탄소학회 2024 Carbon Letters Vol.34 No.1

Curing agents are critical components of aqueous epoxy resin systems. Unfortunately, its uses and applications are restricted because of its low emulsifying yields. Epoxy resins are frequently used in electrical devices, castings, packaging, adhesive, corrosion resistance, and dip coating. In the presence of curing agents, epoxy resins become rigid and infusible. Eco-friendliness and mechanical functionality have emerged as vulcanization properties. Curing agents are used for surface modification, thermodynamic properties, functional approaches to therapeutic procedures, and recent advances in a variety of fields such as commercial and industrial levels. The curing agent has superior construction and mechanical properties when compared to the commercial one, which suggests that it has the potential for use as the architectural and industrial coatings. The thermal stability of cured products is good due to the presence of the imide group and the hydrogenated phenanthrene ring structure. Over the course of the projection period, it is anticipated that the global market for curing agents will continue to expand at a steady rate. The growth of the market is mainly driven by its expanding range in future applications such as adhesives, composites, construction, electrical, electronics, and wind energy. This review focused on the most recent advancements in curing techniques, emphasizing their thermal and mechanical properties. The review also presents a critical discussion of key aspects and bottleneck or research gap of the application of curing agents in the industrial areas. Similar content being viewed by others Curing agents are critical components of aqueous epoxy resin systems. Unfortunately, its uses and applications are restricted because of its low emulsifying yields. Epoxy resins are frequently used in electrical devices, castings, packaging, adhesive, corrosion resistance, and dip coating. In the presence of curing agents, epoxy resins become rigid and infusible. Eco-friendliness and mechanical functionality have emerged as vulcanization properties. Curing agents are used for surface modification, thermodynamic properties, functional approaches to therapeutic procedures, and recent advances in a variety of fields such as commercial and industrial levels. The curing agent has superior construction and mechanical properties when compared to the commercial one, which suggests that it has the potential for use as the architectural and industrial coatings. The thermal stability of cured products is good due to the presence of the imide group and the hydrogenated phenanthrene ring structure. Over the course of the projection period, it is anticipated that the global market for curing agents will continue to expand at a steady rate. The growth of the market is mainly driven by its expanding range in future applications such as adhesives, composites, construction, electrical, electronics, and wind energy. This review focused on the most recent advancements in curing techniques, emphasizing their thermal and mechanical properties. The review also presents a critical discussion of key aspects and bottleneck or research gap of the application of curing agents in the industrial areas. Similar content being viewed by others

Correction: The epoxy resin system: function and role of curing agents

Aziz Tariq,Haq Fazal,Farid Arshad,Chengliang Xiao,Chuah Lai Fatt,Bokhari Awais,Mubashir Muhammad,Tang Doris Ying Ying,Show Pau Loke 한국탄소학회 2024 Carbon Letters Vol.34 No.3

Curing agents are critical components of aqueous epoxy resin systems. Unfortunately, its uses and applications are restricted because of its low emulsifying yields. Epoxy resins are frequently used in electrical devices, castings, packaging, adhesive, corrosion resistance, and dip coating. In the presence of curing agents, epoxy resins become rigid and infusible. Eco-friendliness and mechanical functionality have emerged as vulcanization properties. Curing agents are used for surface modification, thermodynamic properties, functional approaches to therapeutic procedures, and recent advances in a variety of fields such as commercial and industrial levels. The curing agent has superior construction and mechanical properties when compared to the commercial one, which suggests that it has the potential for use as the architectural and industrial coatings. The thermal stability of cured products is good due to the presence of the imide group and the hydrogenated phenanthrene ring structure. Over the course of the projection period, it is anticipated that the global market for curing agents will continue to expand at a steady rate. The growth of the market is mainly driven by its expanding range in future applications such as adhesives, composites, construction, electrical, electronics, and wind energy. This review focused on the most recent advancements in curing techniques, emphasizing their thermal and mechanical properties. The review also presents a critical discussion of key aspects and bottleneck or research gap of the application of curing agents in the industrial areas.

Microwave assisted green synthesis of Ag doped CuO NPs anchored on GO-sheets for high performance photocatalytic and antimicrobial applications

Jarvin Mariadhas,Sarojini Jeeva Panchu,Hendrik C. Swart,Daniel Rani Rosaline,Govindasamy Murugadoss,Durai Govindarajan,Soorathep Kheawhom,Savairoyan Stephen Rajkumar Inbanathan,Awais Bokhari,Lai Fatt 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.128 No.-

Dangerous non-biodegradable compounds are released into the environment due to the increased humanpopulation and industrialization. A simple green synthesis approach of novel silver (Ag)-doped copperoxide (CuO) anchored graphene oxide (GO) nanosheets (Ag-CuO@GO) via energy-efficient microwaveheating method has been developed for photocatalytic and antimicrobial applications. Tea extract is usedas a capping and reducing agent. The prepared Ag-CuO@GO nanocomposites (NCs) used for photocatalyticand antimicrobial activities are investigated systematically. The highly crystalline, wellinterconnectedAg-CuO nanoparticles (NPs) over GO provide an enhanced surface area of 24.1 m2/gand an efficient pore diameter of 15.1 nm with more active sites. A reduced optical bandgap (Eg) of1.48 eV obtained for the Ag-CuO@GO NCs, less than that of the bare and Ag-CuO, indicates that it canfunction as an efficient photocatalyst by harvesting solar energy. As demonstrated by the suppressedPL of the ternary Ag-CuO@GO nanocatalysts, additional of Ag and GO can efficiently separate the chargecarriers. Ag-CuO@GO exhibited an 89% increase in the dye removal rate of MB dye and high antimicrobialactivity against S.aureus, E.coli and Candida albicans that that of bare CuO and binary NCs. The synthesizednovel Ag-CuO@GO NCs show promise as potential photocatalysts for the pollutant degradation andantimicrobial activity.