Article
Chemistry, Physical
Jolanta Gasiorek, Anna Mazur-Nowacka, Anna Szczurek, Bartosz Babiarczuk, Wilhelm Jan Tic, Joanna Guzialowska-Tic, Jerzy Kaleta, Justyna Krzak
Summary: This study investigated organically modified silica (ORMOSIL)-zirconia coatings for enhancing corrosion and scratch resistance properties. Two different materials, SiO2/ZrO2 and SiO2/GPTMS/ZrO2, were synthesized, measured, and compared for performance differences. The SiO2/GPTMS/ZrO2 coating exhibited higher hardness and better corrosion mitigation compared to SiO2/ZrO2.
Article
Chemistry, Physical
V. Encinas-Sanchez, A. Macias-Garcia, M. T. de Miguel, F. J. Perez, J. M. Rodriguez-Rego
Summary: The protective behavior of ZrO2-3%molY(2)O(3) sol-gel coatings on 9Cr-1Mo P91 steel was evaluated using corrosion monitoring sensors. The results showed that the coating effectively limited the transport of ions and slowed down the corrosive process, reducing the corrosion rate of the steel. The proposed sol-gel coatings are a viable option to mitigate corrosion in concentrated solar power plants.
Article
Electrochemistry
K. A. Yasakau, M. Starykevich, M. G. S. Ferreira, M. L. Zheludkevich
Summary: Proper assignment of time constants is crucial for interpreting impedance spectra accurately. Hierarchical models with R-C elements were used to describe the properties of sol-gel coatings, aluminium oxide layers, and corrosion processes in coated aluminium samples. The results provided valuable insights into the adhesion behavior of sol-gel coatings and proposed a degradation model for anodized aluminium.
ELECTROCHIMICA ACTA
(2021)
Article
Materials Science, Coatings & Films
Reza Ahmadi, Abdollah Afshar
Summary: The study aimed to improve the biocompatibility and corrosion resistance of 316L SS metal implants by creating HAp/TiO2/Al2O3 nanocomposite coatings. Results showed that these coatings have good biocompatibility, adhesion strength, and corrosion resistance.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
M. Arunoday, K. Pradeep Premkumar, Ravi Kumar, R. Subasri
Summary: This study proposes the development of multifunctional composite coatings on AA 2024 by combining anodization and sol-gel process. The anodized layer obtained using an ecofriendly electrolyte exhibited improved corrosion resistance and was sealed with a sol-gel coating containing a corrosion inhibitor. The coatings showed excellent adhesion strength and hydrophobic nature, and displayed enhanced corrosion resistance with self-healing properties.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Baoming Zhou, Yongling Wu, Hongyu Zheng
Summary: In this study, a two-step method utilizing electrochemical assisted deposition (EAD) and dip coating was used to create a superhydrophobic self-cleaning surface on copper substrate. The method involved forming a porous and hierarchical silica basecoat using a precursor solution, and then applying a superhydrophobic top-coat. The resulting coating exhibited excellent stain resistance and chemical stability, making it a promising option for protective coatings on complex surfaces.
Article
Materials Science, Coatings & Films
F. Khalesi, M. Farhadian, K. Raeissi
Summary: In this work, post-treatment sol-gel methods using acidic and alkaline TEOS solutions were applied to refine the porous network of ZrO2 coating and improve corrosion resistance. The alkaline TEOS solution resulted in the formation of a dense SiO2 interlayer and narrowed pores in the coating, providing the best barrier performance. On the other hand, the acidic TEOS solution mainly formed thin SiO2 layers on the ZrO2 coating surface, leading to poor barrier performance due to electrostatic repulsion forces.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Engineering, Chemical
Hikmet Okkay, Sadik Sat, Ugur Cengiz
Summary: In this study, optically transparent and mechanically stable superhydrophilic composite thin films were fabricated via a low-cost one-step one pot microwave-assisted sol-gel technique. The wettability performance and antifogging behavior of the films were investigated by varying the PVA content, with the findings showing that a PVA content of 0.096 (wt,%) resulted in higher mechanical performance and a transparent superhydrophilic surface.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Engineering, Chemical
Jaganathan Balaji, Tae Hwan Oh, Mathur Gopalakrishnan Sethuraman
Summary: Hybrid inhibitor-doped sol-gels were synthesized at different pH values and applied as coatings to enhance the corrosion resistance of copper substrates in NaCl solution. The results showed that the hybrid AHMT-doped sol-gel coating at pH 4 exhibited the best corrosion resistance, forming an effective barrier against corrosive chloride ions.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2021)
Article
Materials Science, Multidisciplinary
Chao Chen, Mei Yu, Zhongwei Zhan, Yulin Ge, Zhihua Sun, Jianhua Liu
Summary: This study investigates the effect of pH on the structure and corrosion protection properties of sol-gel coatings, with a special focus on a broad pH range (pH = 1-10) during the sol synthesis process. Measurements of sol viscosity, molecular weight, particle size, and structural analysis of the sol-gel coatings reveal the highest condensation degree in samples with pH = 4. Electrochemical, localized electrochemical techniques, and morphology characterization demonstrate that the coatings with pH = 4 exhibit the best corrosion resistance. The results indicate that a high condensation degree leads to a compact and stable three-dimensional sol-gel network with a high crosslinking density and less silanol content, providing highly effective corrosion protection.
Article
Chemistry, Physical
Aleksandra Kucharczyk, Lidia Adamczyk, Krzysztof Miecznikowski
Summary: The research investigates the protective properties of silane coatings doped with different electrolytes on stainless steel. By utilizing the sol-gel dip-coating method, the coatings showed excellent corrosion resistance and effectively slowed down the corrosion process of the steel substrate.
Article
Materials Science, Coatings & Films
R. del Olmo, U. Tiringer, I Milosev, P. Visser, R. Arrabal, E. Matykina, J. M. C. Mol
Summary: The study evaluated the synergistic effect of anodic film and hybrid sol-gel coating with corrosion inhibitors on enhancing barrier and active corrosion protection of aluminium alloy 2024-T3. The addition of Li- and Ce-based salts into the hybrid sol-gel formulation has shown to provide active corrosion protection. Ce-doped sol-gel coating exhibited less visual corrosion and higher active corrosion protection compared to the Li-containing one during the long-term immersion test in a 0.5 mol.L-1 NaCl solution.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Metallurgy & Metallurgical Engineering
K. S. Duran, N. Hernandez, L. M. Rueda, C. A. Hernandez-Barrios, A. E. Coy, F. Viejo
Summary: This study developed multilayer barrier-bioactive coatings to enhance the corrosion resistance of magnesium alloy and promote the growth of apatite-like phases. However, an increase in salt content led to the formation of porous coatings, affecting the corrosion resistance of magnesium alloy.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Agricultural Engineering
Farah Athena Zakaria, Tuan Sherwyn Hamidon, M. Hazwan Hussin
Summary: Hybrid sol-gel coatings consisting of TEOS-PDMS molecular precursors doped with winged bean extracts were synthesized for the corrosion protection of reinforcing steel in a 0.5 M HCl medium. The doped hybrid coatings exhibited superior corrosion protection performance compared to the undoped TEOS-PDMS coatings, as determined by various electrochemical techniques. The study also examined the morphology, structure, and characteristics of the developed sol-gel coatings using different analytical techniques.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Physical
Jinbo Ji, Baimei Tan, Shihao Zhang, Tengda Ma, Lei Guo, Wei Li, Mei Yan, Fangyuan Wang, Haoyu Du, Xiaolong Wang
Summary: This study investigates the corrosion inhibition effects of BTA and its derivatives on the Co surface, and presents experimental and theoretical results.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Meteorology & Atmospheric Sciences
Anushiya Jeganathan, Ramachandran Andimuthu, Palanivelu Kandasamy
THEORETICAL AND APPLIED CLIMATOLOGY
(2019)
Article
Energy & Fuels
Kunalan Shenker, Palanivelu Kandasamy
GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
(2019)
Article
Multidisciplinary Sciences
Andimuthu Ramachandran, Kandasamy Palanivelu, B. V. Mudgal, Anushiya Jeganathan, Sankar Guganesh, Balu Abinaya, Arunbabu Elangovan
Article
Engineering, Chemical
I. N. Beckman, D. A. Syrtsova, M. G. Shalygin, P. Kandasamy, V. V. Teplyakov
JOURNAL OF MEMBRANE SCIENCE
(2020)
Article
Energy & Fuels
Eledathu Kuriachan Sachin, Andimuthu Ramachandran, Kandasamy Palanivelu, Daria Aleksandrovna Syrtsova, Vladimir Vasilievich Teplyakov, Shankar Kunalan
Summary: This study explores the potential of using carbon dioxide to produce ammonium carbamate, a precursor molecule for urea production, with waste cooking oil as the nonaqueous medium. The process is ecofriendly and cost-effective, with the yield influenced by the NH3/CO(2) ratio and a three-stage setup. The ammonia-rich exhaust gas from the process can be further utilized for phosphate fertilizer production.
GREENHOUSE GASES-SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
S. Kunalan, Kalyan Dey, Projesh Kumar Roy, Vasumathi Velachi, Prabal Kumar Maiti, K. Palanivelu, N. Jayaraman
Summary: The development of polymer-dendrimer composite membranes with different generations of dendrimers showed promising results for efficient separation of CO2 gas. The third generation dendrimer-based composite membrane demonstrated optimal CO2 permeance and CO2/N2 selectivity, approaching the Robeson trade boundary curve. Experimental studies confirmed the superior performance and long-term stability of the membrane.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Environmental Sciences
T. D. Rushendra Revathy, A. Ramachandran, K. Palanivelu
Summary: Energy demand is expected to increase globally in the near future, highlighting the need for carbon capture and storage (CCS) technologies to mitigate the impacts of climate change. Direct mineral carbonation of alkaline solid wastes, such as red mud (RM), has shown promise as a cost-effective and environmentally friendly option for sequestering CO2. The study found that wet carbonation conditions resulted in a significant reduction in CO2 concentration, with the RM's sequestration capacity determined to be 15.5 g of CO2/kg. Statistical analysis indicated the significance of different factors in both wet and dry routes for mineral carbonation.
Article
Agronomy
P. Dhanya, A. Ramachandran, K. Palanivelu
Summary: The study found that farmers in the Chengalpet district of Tamil Nadu, South India, have observed climate variability and are implementing autonomous adaptation strategies such as changing planting dates and adopting heat resistant crops. They are also cultivating multipurpose tree species to mitigate short term risks and sustain livelihoods. The farmers face social hurdles in accessing timely information about effective adaptation options and lack crop-weather insurances, among other obstacles. Additionally, SWOT analysis highlighted threats such as dwindling crop area and poor weather forecasts dissemination. Prioritizing site-specific adaptation interventions is recommended to address future climate change challenges and livelihood insecurity.
AGRICULTURAL RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Tamilselvi Dananjayan Rushendra Revathy, Andimuthu Ramachandran, Kandasamy Palanivelu
Summary: The study on CO2 sequestration using Indian coal fly ash revealed that aqueous carbonation has a higher sequestration capacity, while gas-solid carbonation is significantly impacted by temperature and pressure.
CLEAN TECHNOLOGIES AND ENVIRONMENTAL POLICY
(2022)
Article
Environmental Sciences
Tamilselvi Dananjayan RushendraRevathy, Andimuthu Ramachandran, Kandasamy Palanivelu
Summary: Carbon capture and storage is essential for reducing CO2 emissions and addressing climate change impacts. In India, mineral carbonation technology offers a cost-effective solution for capturing CO2 from existing plants. This study focused on direct mineral carbonation of steelmaking slag with flue gas, achieving promising results and demonstrating the potential for carbon sequestration in this particular industrial byproduct.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Polymer Science
Shankar Kunalan, Kandasamy Palanivelu, Eledathu Kuriachan Sachin, Daria Aleksandrovna Syrtsova, Vladimir Vasilievich Teplyakov
Summary: The gas transport properties of hydrogel chitosan and polymer blend surface-modified polyvinyltrimethylsilane composite membranes were evaluated for pure CO2, N-2, and CH4 gases. The results showed that under optimized conditions, the modified membrane exhibited excellent CO2 separation performance.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Environmental Sciences
Ahamed S. N. Ibrahim, S. Shalini, A. Ramachandran, K. Palanivelu
Summary: This study explores the variations in aerosol particulate matter during the COVID-19 lockdown in Indian cities and its sensitivity to anthropogenic and meteorological factors. The results show a negative change in aerosol optical depth and black carbon optical depth during successive phases of lockdown. Southern urban cities are more affected by mobile sources. Factor analysis reveals the influence of meteorological factors between major cities.
JOURNAL OF ATMOSPHERIC CHEMISTRY
(2022)
Review
Environmental Sciences
Shankar Kunalan, Kandasamy Palanivelu
Summary: Carbon dioxide emission is the main cause of environmental issues like global warming and climate change. Capturing CO2 from industrial sources is an important step to address these problems. Polymeric composite membranes have shown better performance in CO2 capture compared to other membranes due to their composite structure. This review discusses the utilization of different polymeric composite membranes and their potential to improve the CO2 capture process in industrial applications.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Geochemistry & Geophysics
S. Lakshmi, E. A. K. Nivethaa, S. N. Ahamed Ibrahim, A. Ramachandran, K. Palanivelu
Summary: The study analyzes the impact of El Nino and La Nina events on northeast monsoon rainfall in the coastal districts of Tamil Nadu over the past few decades, and predicts future extreme events through simulations and observational data. This research provides important insights for climatological studies and assessing the impact of climate change on localized regions.
PURE AND APPLIED GEOPHYSICS
(2021)
Article
Chemistry, Physical
D. A. Syrtsova, M. G. Shalygin, V. V. Teplyakov, K. Palanivelu, A. Zinoviev, M. S. Piskarev, A. A. Kuznetsov
Summary: This study explores the application of membrane gas separation technique for CO2 recovery and conversion into ammonium carbamate. The results show that modifying the membrane surface can significantly improve gas separation performance, and mathematical modeling confirms the feasibility of the new membranes.
MEMBRANES AND MEMBRANE TECHNOLOGIES
(2021)
