Article
Environmental Sciences
J. M. Sanchez-Silva, A. Aguilar-Aguilar, G. J. Labrada-Delgado, E. G. Villabona-Leal, H. J. Ojeda-Galvan, J. L. Sanchez-Garcia, H. Collins-Martinez, M. Lopez-Ramon, R. Ocampo-Perez
Summary: This study presents a one-step synthesis method for preparing hydrochar doped with TiO2 for the degradation of crystal violet using UV and visible radiation. The synthesis was carried out using Byrsonima crassifolia stones as precursors and TiO2 particles. The photocatalyst was characterized and the degradation of crystal violet was investigated. The results showed that the HC-TiO2 composite had good dispersion of TiO2 and exhibited enhanced photocatalyst activation with visible radiation. The degradation percentages were higher with UV radiation compared to visible radiation.
ENVIRONMENTAL RESEARCH
(2023)
Article
Physics, Condensed Matter
Punit Kumar Sharma, O. P. Pandey
Summary: In this study, different CeO2 heterostructures were synthesized using the co-precipitation method and characterized using various methods. The results showed that the CeO2 heterostructure with (Cd0.0015Zn0.0015)S-0.003 exhibited higher catalytic activity and rate constant.
PHYSICA B-CONDENSED MATTER
(2022)
Article
Chemistry, Physical
Ying Wang, Jiaru Peng, Yangfan Xu, Ruiyang Zhao, Jishu Han, Lei Wang
Summary: This study fabricated CdSe/CuInS2 microflowers with high photocatalytic hydrogen production activity through the construction of p-n heterostructure, demonstrating their broad application prospects in water splitting for hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Materials Science, Multidisciplinary
Khadijah Mohammedsaleh Katubi, Aafia Aslam, Sidra Khalil, Z. A. Alrowaili, M. S. Al-Buriahi, Mamoona Anwar, Muhammad Imran Din
Summary: In this study, CdO nanoparticles, NiFe2O4 nanoparticles, CdO/NiFe2O4, and ternary composite of CdO/NiFe2O4/g-C3N4 were used for the photocatalytic degradation of diclofenac sodium and crystal violet. The ternary nanocomposite of CdO/NiFe2O4/g-C3N4 showed better photodegradation activity compared to pure CdO and NiFe2O4 nanoparticles and their binary composite. The improved degradation efficiency of the ternary nanocomposite is attributed to its high surface area and active sites provided by g-C3N4 sheets, which prevent electron/hole recombination and facilitate species degradation. Therefore, CdO/NiFe2O4/g-C3N4 nanocomposite has potential for degrading other organic pollutants/dyes in the future.
Article
Engineering, Environmental
Xiaoyong Deng, Rui Chen, Zhiwei Zhao, Fuyi Cui, Xiao Xu
Summary: A novel composite system comprising silver nanoparticles modified graphene oxide-supported graphitic carbon nitride microflowers ternary heterojunction (Ag@CNG) was synthesized to efficiently remove organophosphorus pesticides, particularly dimethoate (DT), in water. The system utilizes a combination of photocatalysis and sulfite activation to enhance the degradation of DT, showing great potential for refractory and deleterious pollutants removal. Further research also revealed the degradation pathways and mechanism of DT, along with a comprehensive evaluation of the toxicity evolution of products.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Nguyen Thi Huong Giang, Nguyen Ngoc Tan, Le Minh Huong, Nguyen Duy Hai, Nguyen Tan Thinh, Nguyen Thien Phuc, Nguyen Minh Dat, Mai Thanh Phong, Nguyen Huu Hieu
Summary: In this study, titanium dioxide/graphene aerogel doped sulfur (S-TiO2/GA) was successfully synthesized and characterized. The doping process improved the photoactivity and degradation efficiency of the material. The optimal conditions for crystal violet (CV) degradation using S-TiO2/GA were selected and optimized. The results suggested the potential applications of the material in environmental treatments.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Materials Science, Multidisciplinary
Aayush Gupta, Jagdeep Kaur, Om Prakash Pandey
Summary: The effect of composition on the optical and photocatalytic performance of ZnS-ZnO composite is investigated in this study. The composite samples are synthesized using a chemical precipitation method, and the composition of the precipitating agent affects the formation of ZnO and ZnS. Optical studies show enhanced visible absorption and redshift in the absorption edge of the composites compared to bare ZnS nanoparticles. The combination of ZnO and ZnS is supported by optical emission spectra.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Chemistry, Inorganic & Nuclear
Hanliu Wu, Meiling Liu, Yan Quan, Xuemei Tian, Chunguang Ren, Zhonghua Wang
Summary: In this study, microflower-like ZnO/Ti3C2 composite photocatalysts were prepared and characterized, and their photocatalytic performances were evaluated. It was found that a trace amount of Ti3C2 significantly enhanced the photocatalytic activity of ZnO. The pseudo-first-order rate constants of ZnO/Ti3C2-0.05 and ZnO/Ti3C2-0.5 were 2.9 and 4.2 times higher than that of ZnO, respectively. ZnO/Ti3C2-0.5 composite also showed good stability.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Environmental Sciences
Hina Liaquat, Muhammad Imran, Shoomaila Latif, Sajid Iqbal, Nazim Hussain, Muhammad Bilal
Summary: NiWO4/Bi2S3 and reduced graphene oxide (rGO-NiWO4/Bi2S3) nanocomposites were successfully synthesized via a simple green sol-gel approach, showing superior photocatalytic and dielectric properties for potential applications in the degradation of organic pollutants and energy storage materials.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
Sadou Dalhatou, Mouhamadou Sali, Samuel Tetteh, Abdoulaye Boubakari, Bouba Talami, Hicham Zeghioud, Abdoulaye Kane, Atef El Jery, Aymen Amin Assadi, David Olubiyi Obada
Summary: This study evaluated the sorbent and photocatalytic potential of local clay in the degradation of crystal violet dye in irrigated rice field waters. The clay exhibited strong adsorption capacity and showed improved photocatalytic activity when coupled with titanium dioxide (TiO2).
Article
Materials Science, Multidisciplinary
Heba A. Kashmery, Soliman I. El-Hout
Summary: A modified sol-gel process using Pluronic F-127 as the surfactant successfully synthesized bismuth oxide (Bi2O3). By incorporating mesoporous Bi2S3 nanoparticles onto the surface of Bi2O3, heterojunctions that enhance charge transfer and visible light absorption were formed. The content of Bi2S3 determined the effectiveness of the heterojunctions, with 3.0 wt% achieving the best photocatalytic activity for tetracycline degradation. The nanocomposite showed notable reusability and a boosted photocatalytic efficiency through a Z-scheme mechanism.
Article
Nanoscience & Nanotechnology
Aabid Hussain Bhat, Nisar Ahmad Chopan, Hamida-Tun-Nisa Chisti
Summary: In this study, a facile hydrothermal method was employed to fabricate the Fe3O4/ZnO dual-functional magnetic nanocomposite. The structural, morphological, optical, and magnetic properties of the nanocomposite were analyzed using various techniques. The material exhibited excellent performance in supercapacitor and visible-light-driven photocatalytic applications, opening up exciting possibilities in fields such as energy storage and pollution control.
Article
Materials Science, Ceramics
Punit Kumar Sharma, O. P. Pandey
Summary: This work successfully synthesized CeO2 nanoparticles by optimizing synthesis parameters and characterized them using various techniques for structural, morphological, and optical studies. The addition of a capping agent reduced particle aggregation, leading to enhanced photocatalytic activity, with nanoparticles synthesized in ethanol exhibiting higher degradation efficiency.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Vinicius Teodoro, Aline Barrios Trench, Leticia Guerreiro da Trindade, Natalia Jacomaci, Hector Beltran-Mir, Juan Andres, Eloisa Cordoncillo, Jefferson Bettini, Elson Longo
Summary: The study demonstrated that Bi2S3 semiconductor behaves as a piezoelectric material under ultrasound, facilitating electron and hole transfer and enabling the formation of oxidizing agents. While Bi2S3 showed no photocatalytic activity in the presence of light, ultrasound led to a significant increase in RhB degradation.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Chemistry, Physical
Gaurav Sharma, Amit Kumar, Mu Naushad, Pooja Dhiman, Bharti Thakur, Alberto Garcia-Penas, Florian J. Stadler
Summary: In this study, a novel nanocomposite hydrogel with a C3N4/BiOI heterostructure supported on a gum acacia-crosslinked-poly(acrylamide) hydrogel was designed. The potential application of this nanocomposite hydrogel in mitigating crystal violet dye (CVD) in aqueous solutions was explored. Structural and functional analysis of the nanocomposite hydrogel was conducted, and various reaction parameters were optimized. The C3N4/BiOI heterostructure in the nanocomposite hydrogel exhibited a Z-scheme as the potential photocatalytic mechanism for CVD photodegradation, which was validated through COD and HR-MS analysis of the degradation pathways.
Article
Energy & Fuels
Nivedha R. M. Ramanathan, N. Balasubramanian, K. Chithra
Summary: This study explores the production of biogas from high organic content confectionery wastewater through anaerobic treatment. The wastewater was pre-treated with ultrasound technology to enhance biogas yield. Experiments were conducted using different ratios of kitchen waste (KW), slaughterhouse waste (SHW), and coffee grounds (CGW) as substrates, and the production of biogas was tested. Kinetic studies were performed using the modified Gompertz model and Logistic model. The results show that ultrasound pre-treatment increases biogas production. SHW as a substrate resulted in higher cumulative biogas production compared to other co-substrates. The modified Gompertz model provided a better fit.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2022)
Article
Energy & Fuels
J. Narendranath, J. Manokaran, S. Shanmuga Sundar, R. Muruganantham, Ahmed Al Shoaibi, C. Srinivasakannan, N. Balasubramanian
Summary: Despite large investments in industries, energy conservation methods are lagging behind and industries are still searching for alternatives. This study presents an effective method of recovering sulfur and hydrogen from hydrogen sulfide using indirect electrolysis, with graphite as both anode and cathode and calomel as a reference electrode. The recovered sulfur showed a crystalline orthorhombic structure, and the maximum current density achieved was 0.41 A/cm(2). The quantity of sulfur recovered by indirect electrolysis was 2.9 mg with an efficiency of 90.44%.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Article
Engineering, Environmental
U. Sathya, P. Keerthi, M. Nithya, N. Balasubramanian
Summary: A pilot-scale photocatalytic membrane bioreactor (PMBR) was developed for the treatment of textile dyeing wastewater, using a WO3/1% GO composite photocatalyst. Integration with MBR improved the removal efficiency of COD, color, and total suspended solids in the wastewater treatment process.
ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
(2021)
Article
Polymer Science
S. Hariganesh, S. Vadivel, Bappi Paul, M. Kumaravel, Saravanan Rajendran, N. Balasubramanian, Siddhartha Sankar Dhar
Summary: The prepared CuCo2S4/GO/Fe2O3 composites can be used as an electrode for supercapacitors and as a magnetically recoverable Fenton catalyst for dye degradation. They exhibit high specific capacitance value, good cyclic stability, and remarkable removal efficiency for degrading cationic dye rhodamine B. The ternary composites show great potential for energy and environmental applications.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
S. Hariganesh, S. Vadivel, Bappi Paul, M. Kumaravel, N. Balasubramanian, Saravanan Rajendran, Siddhartha Sankar Dhar
Summary: The synthesis of metal oxides from MOFs has been a focus due to their structural behavior, with magnetic CuFe2O4 successfully prepared using Fe-containing MOF cubes. The synthesized material was characterized using XRD, SEM, HR-TEM, and UV-vis DRS, with the photocatalytic activity of CuFe2O4 cubes evaluated through the degradation of RhB dye. The CuFe2O4 cubes showed high efficiency in degrading the dye under visible light, and they were easily recovered for further use, demonstrating potential for environmental remediation.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Biophysics
N. Kannan, Shanmuga S. Sundar, S. Balaji, Anil N. Kumar, N. Balasubramanian
Summary: This study aimed to characterize the toxicological effects of colloidal mercuric formulation using various physiochemical analyses, as well as in vitro and in vivo assays. The results showed promising selective toxicity against cancer cells, while being less harmful to normal cells. The formulation exhibited positive biological effects and potential value for cancer treatment.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Chemistry, Physical
Sethumathavan Vadivel, Metwally Madkour, Saravanan Rajendran, Chinnasamy Sengottaiyan
Summary: In this study, Ag2C2O4/Ag@GNS nanocomposite combined with peroxymonosulfate (PMS) was used for the first time to remove bisphenol-A (BiP-A). The nanocomposite exhibited superior photocatalytic performance compared to pure Ag2C2O4 and pure GNS. The experimental results revealed the significant role of O-2-, OH, and SO4- radicals in the photolysis process. The study also investigated the influence of photocatalyst and PMS concentration, pH, and co-existing ions on the BiP-A degradation, and proposed a possible degradation pathway and photocatalytic mechanism.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Sethumathavan Vadivel, Nithya Ramasamy, Balaubramanian Natesan, Kavitha Nagarasampatti Palani
Summary: A heterojunction AgBr/Ag/AgCoO2 nanocomposite was synthesized using hydrothermal and deposition precipitation methods. The morphology, crystallinity, and band structure of the nanoparticles were characterized, and their outstanding catalytic efficiency and total organic carbon removal ability under visible light were demonstrated through experiments and analysis.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
R. Selvarajan, Sethumathavan Vadivel, A. Saranya, P. Baraneedharan, R. Jayavel
Summary: In this work, CoO nanostructures were uniformly decorated on rGO surfaces using a simple one-step hydrothermal method. The physiochemical techniques showed that the CoO/rGO electrode material had a well-defined structure and morphology. The CoO nanostructures acted as a highly conductive material, promoting uniform redox reactions. The CoO/rGO nanocomposite exhibited a specific capacitance value of 592 F g(-1) and good stability, making it suitable for electrochemical energy storage devices. Additionally, the RGO played a dual role as an electron mediator and improved light absorption in the visible light region. The CoO/rGO nanocomposite also showed improved photocatalytic activity for water splitting under visible light.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Jhanani Raji Karunagaran, Manokaran Janakiraman, Asha Mathew, Balasubramanian Natesan
Summary: A platinum free hybrid counter electrode VNGp was synthesized for dye-sensitized solar cell by hydrothermal method. Various analysis techniques were used to characterize the VNGp composite, showing that the VNGp hybrid counter electrode exhibited adsorption-controlled process at the CE/electrolyte interface and had high fill factor and efficiency.
Article
Environmental Sciences
Harshavardhan Mohan, Sethumathavan Vadivel, Se-Won Lee, Jeong-Muk Lim, Nanh Lovanh, Yool-Jin Park, Taeho Shin, Kamala-Kannan Seralathan, Byung-Taek Oh
Summary: The WO3/Zeolite/V2O5 (TZV) composite synthesized through co-precipitation showed excellent degradation efficiency for Bisphenol-A (BpA) compared to bare V2O5. The composite had high crystallinity and no free particles on the zeolite surface. Photocatalytic degradation studies and material analysis demonstrated the high efficiency and stability of the composite, as well as its environmental friendliness.
ENVIRONMENTAL RESEARCH
(2022)
Review
Engineering, Chemical
Johnsi Maria Singaraj, Asha Shalini Vincent Janet Mary, Poojitha Bhaskara, Supreetha Dhamodharan, Oviyan Selvamani, Kavitha Nagarasampatti Palani, Balasubramanian Natesan
Summary: The architecture of lithium-sulfur batteries offers five times more charge capacity compared to lithium-ion batteries. This review highlights recent research findings on sulfur loading, electrolyte-to-sulfur ratio, and the polysulfide shuttling effect. Potential remedies for electrolyte stability issues are discussed, and future scopes for optimizing Li-S batteries are suggested, including pore structure optimization, designing sulfur confinement systems, and exploring innovative components for commercialization. The review also provides an overview of the history of Li-S batteries, summarizes recent research findings, evaluates future challenges and possible solutions, and outlines further steps towards advanced Li-S batteries with new-generation components.
CHEMICAL ENGINEERING & TECHNOLOGY
(2023)
Article
Environmental Sciences
Asha Mathew, Jhanani Raji Karunagaran, Sudhisha Vasudevan, Balasubramanian Natesan
Summary: This study investigates the feasibility of desalinating industrial reverse osmosis reject using flow electrode capacitive deionization (FCDI) and assesses the impact of salinity on flow electrode sustainability. The results show that using saline-activated carbon can achieve a higher removal rate of total dissolved solids in the reject.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Electrochemistry
Dhana Priya Singaramohan, Saravanathamizhan Ramanujam, Manimozhi Veerasamy, Santhoshini Priya Thomas, Balasubramanian Natesan
Summary: The present study aims to synthesize a graphene-like structure from petroleum coke for potential applications in supercapacitors. The activated pet coke is obtained by using phosphoric acid under optimized conditions. The activated pet coke exhibits excellent electrochemical performance, indicating its potential as an alternative material for supercapacitors.
JOURNAL OF ELECTROCHEMICAL SCIENCE AND ENGINEERING
(2023)
Article
Engineering, Environmental
T. Vijayaraghavan, R. Althaf, Pradeepta Babu, K. M. Parida, S. Vadivel, Anuradha M. Ashok
Summary: Novel nanocomposites of LaFeO3 Reduced Graphene Oxide (RGO) NiO were synthesized using sol-gel and solid-state methods in order to enhance photocatalytic activity. The material showed higher visible light activity due to narrower bandgap and appropriate band edge potentials, with the sol-gel method displaying superior performance in Congo-red dye degradation and hydrogen & oxygen evolution experiments.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
