Article
Chemistry, Multidisciplinary
Yumatorn Mingmongkol, Dang Trung Tri Trinh, Patcharaporn Phuinthiang, Duangdao Channei, Khakhanang Ratananikom, Auppatham Nakaruk, Wilawan Khanitchaidecha
Summary: In this study, metal-doped titanium dioxide was synthesized to improve photocatalytic degradation and antimicrobial activities. The copper-doped TiO2 nanoparticles showed well-maintained anatase phase and a decreased band gap. The 0.1 wt.% Cu-doped TiO2 exhibited enhanced photocatalytic degradation and antibacterial ability, while the high Cu doping levels had negative impacts on surface charge and charge transfer.
Article
Chemistry, Multidisciplinary
Saeed Moshtaghi, Masoud Hamadanian, Masoud Salavati-Niasari
Summary: The fabricated NaY(WO4)(2) was identified using various analysis methods, and saccharide carbohydrates were used as capping agents to optimize its morphology. Among glucose, fructose, lactose, cellulose, and starch, fructose was found to be the best capping agent for achieving uniform and well-shaped nanoparticles. The photodegradation of organic dyes by NaY(WO4)(2) under UV and Vis light was evaluated, and its bandgap energy was measured to be approximately 3.85 eV. The study also investigated the influence of dye dosage and reusability on the photodegradation behavior.
Article
Engineering, Electrical & Electronic
T. N. Ravishankar, G. Banuprakash, M. de O. Vaz
Summary: A novel ternary photocatalyst Ag@TiO2/NiFe2O4 was synthesized and characterized, showing excellent photocatalytic activities and photostability through various analytical methods.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Engineering, Environmental
Youn-Jun Lee, Chang-Gu Lee, Jin-Kyu Kang, Seong-Jik Park, Pedro J. J. Alvarez
Summary: This study investigates a simple method for the preparation of floating photocatalysts using TiO2 particles and expanded polystyrene, showing efficient removal of Cr(VI) and other water contaminants. The results suggest that the catalyst is stable, reusable, and effective in wastewater treatment.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Pimchanok Longchin, Sumet Sakulsermsuk, Khatcharin Wetchakun, Pinit Kidkhunthod, Natda Wetchakun
Summary: The study investigated the enhancement of photocatalytic activities by doping Mo ions into Bi2WO6, revealing that the optimal Mo doping concentration is 0.25% to achieve approximately 2-fold improvement in photocatalytic activity. The presence of Mo ions below the conduction band edge of Bi2WO6 acts as an electron trapping site to prevent electron transition, ultimately enhancing photocatalytic efficiency with superoxide anion radicals established as the main active species.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Applied
Miroslava Filip Edelmannova, Martin Reli, Peter Nadrah, Nejc Rozman, Rudolf Ricka, Andrijana Sever Skapin, Miha Nosan, Urska Lavrencic Stangar, Kamila Koci
Summary: This study aims to investigate the correlation between the structural properties of different TiO2 catalysts and their photocatalytic performance and selectivity in CO2 reduction at different pH levels. Two types of TiO2 catalysts were prepared and extensively characterized using various techniques. The prepared catalysts exhibited higher selectivity in CO2 reduction compared to a commercial P25 catalyst. The TiSG catalyst, which had the lowest portion of hydroxyl oxygen species, showed the highest photoreduction efficiency. The study also explored the effect of pH on the efficiency and selectivity of photocatalytic CO2 reduction, revealing different product distributions in acidic and basic environments.
Article
Physics, Condensed Matter
R. Abirami, T. S. Senthil, C. R. Kalaiselvi
Summary: The (Ag-Fe) codoped PbTiO3 nanoparticles synthesized by hydrothermal method showed high photocatalytic activity in degrading dyes under UV light, attributed to enhanced charge separation and adsorption capacity. The catalyst was found to be reusable and stable in the study.
SOLID STATE COMMUNICATIONS
(2021)
Article
Materials Science, Ceramics
C. V. Nova, K. A. Reis, A. L. Pinheiro, C. J. Dalmaschio, A. J. Chiquito, M. D. Teodoro, A. D. Rodrigues, E. Longo, F. M. Pontes
Summary: ZrO2 nanoparticles and Ag@ZrO2 nanocomposite were prepared via advanced oxidation processes and hydrothermal treatment, showing tetragonal crystalline phase with small nanoparticles. Ag@ZrO2 exhibited superior photocatalytic activity and antibacterial properties compared to ZrO2, with growth inhibition of bacteria cultures and irreversible damage observed on bacterial cell membranes through SEM analysis.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Miao Wang, Yingying Guo, Zedong Wang, Huihui Cui, Tongming Sun, Yanfeng Tang
Summary: CeVO4 hierarchical hollow microspheres with various morphologies were synthesized via a glycerol-assisted solvothermal route. The adjustable structural variations and enhanced photocatalytic performance of the CeVO4 materials suggest new possibilities for the development of efficient hollow micro/nanostructures in the future.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Inorganic & Nuclear
Sheraz Bashir, Akmal Jamil, Rashid Amin, Iftikhar Ul-hasan, Amira Alazmi, Muhammad Shahid
Summary: rGO/Gd-BiSbO4 nanocomposite, fabricated by anchoring rare-earth doped BiSbO4 nanoparticles on rGO nanosheets, shows significantly higher photocatalytic activity compared to other catalysts for efficient degradation of organic dyes in industrial wastewater.
JOURNAL OF SOLID STATE CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Magesh Subramaniyan, G. Gnanamoorthy, S. Shreedevi
Summary: The CaSnO3/rGO/Ag nanocomposites were prepared by hydrothermal method and showed wide band gap energy with structural identifications. These materials exhibited photocatalytic activity under visible light irradiation, with M-O orientation confirmed by FT-IR and Raman spectroscopy. The SEM studies confirmed the cubic shape morphology of the CaSnO3/rGO/Ag nanocomposites, and the structural phase was determined by XRD analysis. The photocatalytic and antibacterial performances of the nanocomposites were found to be promising.
RESEARCH ON CHEMICAL INTERMEDIATES
(2023)
Article
Engineering, Electrical & Electronic
Xiaodong Zhu, Qin Zhou, Yangwen Xia, Juan Wang, Hongjin Chen, Qiao Xu, Jiawei Liu, Wei Feng, Shanhua Chen
Summary: Pure TiO2 and Cu-doped TiO2 with different amounts of copper ions were synthesized via a hydrothermal method, showing high photocatalytic activity. The coexistence of three phases and the conversion between Cu2+ and Cu+ ions contribute to the separation of photogenerated electrons and holes, improving the photocatalytic performance.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Hongli Sun, Wenhua Xue, Jun Fan, Enzhou Liu, Qiushuo Yu
Summary: Ni12P5/Cd0.5Zn0.5S composites were synthesized to enhance photocatalytic H-2 production, with 10% composites showing the highest production rate of 46.82 mmol g(-1) h(-1) under 400nm light with an AQE of 24.5%. The improved activity was attributed to enhanced light absorption and promoted charge carrier separation after introducing Ni12P5. This work offers a convenient and cost-effective method for developing efficient photocatalysts for environmental and energy-related applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
G. S. Shivaganga, P. Parameswara, C. Mallikarjunaswamy, K. C. Sunil Kumar, T. L. Soundarya, G. Nagaraju, S. Punith, V. Lakshmi Ranganatha
Summary: This research article presents a method for synthesizing MnWO4 nanoparticles using MnCl2 and Na2WO4.2H(2)O as precursors, with water as the only solvent. The synthesized material is comprehensively characterized and shows excellent photocatalytic degradation of organic pollutants and sensing capabilities for nano-molar concentrations of nitrite solution.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Crystallography
Ebrahim Saied, Alsayed E. Mekky, Abdulaziz A. Al-Askar, Abdelrahman F. Hagag, Abdullah A. El-bana, Mohamed Ashraf, Abdelrahman Walid, Taha Nour, Mahmoud M. Fawzi, Amr A. Arishi, Amr H. Hashem
Summary: In this study, selenium nanoparticles (SeNPs) were synthesized using a green and eco-friendly method, with Aspergillus terreus extract as a reducing and stabilizing agent. The synthesized SeNPs showed spherical shapes and sizes less than 100 nm. The SeNPs demonstrated antibacterial activity against both Gram-positive and Gram-negative bacteria, as well as rapid degradation of malachite green dye.
Article
Thermodynamics
Mingming Zhang, Anton Timoshin, Essam A. Al-Ammar, Mika Sillanpaa, Guiju Zhang
Summary: The current paper proposes a new hybrid system based on a binary-geothermal system to generate power, cooling capacity, freshwater, and hydrogen. The system integrates organic Rankine cycle, ejector refrigeration cycle, proton exchange membrane electrolyzer, and reverse osmosis desalination unit. Through precise modeling in Matlab, the system's performance is optimized using multi-objective grey wolf optimization. Results show that the system can achieve high power output, cooling capacity, hydrogen production, and freshwater generation with cost-effectiveness.
Review
Green & Sustainable Science & Technology
Mokgehle R. Letsoalo, Thandiwe Sithole, Steven Mufamadi, Zvanaka Mazhandu, Mika Sillanpaa, Ajeet Kaushik, Tebogo Mashifana
Summary: The presence of pharmaceutical contaminants (PCs) in the environment, including water and aquatic life, is a continuous threat to human health and the natural cycle. In particular, the accumulation of non-degradable water-soluble residues in water streams and groundwater has raised serious concerns and is now a focus of the United Nations' Sustainable Development Goals 2030. This article explores the challenges and potential solutions for the selective detection and efficient remediation of PCs in wastewater using nano-enabled functional systems.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Environmental Sciences
Heba Saed Kariem Alawamleh, Seyedsahand Mousavi, Danial Ashoori, Hayder Mahmood Salman, Sasan Zahmatkesh, Mika Sillanpaa
Summary: The study aims to improve the performance of membrane treatment for oily wastewater. The effects of pre-treatment, membrane modification, and operational parameters on the microfiltration membrane system were investigated. The results showed that using PFS as a coagulant at pH=6 can achieve a COD reduction of 98%, while using PFC at the same conditions only removes 81% of COD.
Article
Chemistry, Physical
Luca Deiana, Abdolrahim A. Rafi, Cheuk-Wai Tai, Jan-E. Backvall, Armando Cordova
Summary: We disclose a novel and sustainable tandem-catalysis system for asymmetric synthesis, which is fabricated via bio-inspired self-assembly of artificial arthropod exoskeletons or artificial fungi cell walls containing enzyme and metal nanoparticles. The heterogeneous integrated enzyme/metal nanoparticle system co-catalyzes the dynamic kinetic resolution of primary amines, resulting in high yields and excellent enantiomeric excess of the corresponding amides. The use of natural-based and biocompatible structural components makes the system fully biodegradable and renewable, fulfilling important green chemistry requirements.
Article
Chemistry, Multidisciplinary
ZeynabAlsadat Khatami Shal, Cheuk-Wai Tai, Michael Goepel, Roger Glaeser, Mozaffar Shakeri
Summary: In-situ growth of supported embryonic TS-1 zeolite (<10nm) on a silica support was achieved by steam-assisted crystallization(SAC). The use of low amounts of TPABr and steam at a moderate temperature of 130 degrees C was the key factor to control partial transformation of silica into supported embryonic TS-1. Supported embryonic TS-1 exhibits higher catalytic activity, resistance to poisoning, and selectivity compared to reference crystalline TS-1.
CRYSTAL GROWTH & DESIGN
(2023)
Article
Green & Sustainable Science & Technology
Rajesh Babu Katiyar, Suresh Sundaramurthy, Anil Kumar Sharma, Suresh Arisutha, Moonis Ali Khan, Mika Sillanpaa
Summary: Urbanization and population growth lead to a substantial increase in solid waste generation. Vermicomposting, which employs earthworms to recycle solid waste, proves to be a sustainable solution. This study explores the impact of earthworm-processed solid waste manure (vermicompost) on the growth, productivity, and chemical characteristics of chili and brinjal plants in different wooden reactors. The findings reveal that polyculture reactors with vermicompost soil exhibit significantly higher yields of both chili and brinjal compared to monoculture reactors.
Article
Chemistry, Physical
Sadia Aroob, Sonia A. C. Carabineiro, Muhammad Babar Taj, Ismat Bibi, Ahmad Raheel, Tariq Javed, Rana Yahya, Walla Alelwani, Francis Verpoort, Khanita Kamwilaisak, Saleh Al-Farraj, Mika Sillanpaa
Summary: In this study, CuO nanoparticles were synthesized by a simple, one-pot mechanochemical approach using the leaf extract of Seriphidium oliverianum as a reducing and stabilizing agent. The CuO NPs showed high potential for degrading water-soluble industrial dyes, with degradation rates of 65.231% +/- 0.242 for methyl green (MG) and 65.078% +/- 0.392 for methyl orange (MO). This bio-mechanochemically synthesized CuO NPs are promising candidates for efficient dye removal from water.
Article
Chemistry, Analytical
Kanthappa Bhimaraya, Jamballi G. Manjunatha, Karnayana P. Moulya, Ammar M. Tighezza, Munirah D. Albaqami, Mika Sillanpaa
Summary: The electrochemically polymerized glycine layered carbon paste electrode (EPGNLCPE) was used as an easy and rapid analytical tool for the analysis of levofloxacin (LN). The EPGNLCPE sensor, compared to the bare carbon paste electrode (BCPE), showed improved surface features and activities. Under optimized conditions, the differential pulse voltammetry method using EPGNLCPE exhibited good linearity, low limit of detection, and low limit of quantification for the analysis of LN. Real-time application of the sensor showed good recovery of LN in medicinal samples.
Article
Materials Science, Multidisciplinary
Vahid Saadattalab, Jiquan Wu, Cheuk-Wai Tai, Zoltan Bacsik, Niklas Hedin
Summary: The study investigates the use of activated carbon (AC) for the removal of volatile organic compounds (VOCs) from gas mixtures. The inclusion of inorganic phosphates on ACs enhances the low gas pressure uptake of acetone and isopropanol. The results suggest that ACs containing iron phosphate could be effective for the adsorption-driven removal of VOCs.
Article
Chemistry, Multidisciplinary
Shaowen Li, Zhigang Chai, Zhaohui Wang, Cheuk-Wai Tai, Jiefang Zhu, Kristina Edstroem, Yue Ma
Summary: This study comprehensively investigates the factors influencing lithium solubility in lithium-zinc alloy and analyzes the spatial distribution of intermediate alloy/lithium metallic species under different conditions. The driving force of lithium diffusion into the solid solution and the correlation between interfacial charge transfer thermodynamics and rate-limiting kinetics are explored. The study also explores lithiophilic alloy sites that promote homogeneous metal plating.
ADVANCED MATERIALS
(2023)
Review
Engineering, Environmental
Thuhin Kumar Dey, Jingwei Hou, Mika Sillanpaa, Biplob Kumar Pramanik
Summary: Micro/nanoplastics (MPs/NPs) are widespread and pose a significant threat to the environment. Metal-organic frameworks (MOFs)-based membranes have gained attention for their potential in removing MPs/NPs from water and wastewater. However, challenges such as re-aggregation, cross-contamination, and poor structural stability need to be addressed for the successful application of MOF membranes.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Anastasiia Mikheenkova, Alexander J. Smith, Kristian B. Frenander, Yonas Tesfamhret, Niladri Roy Chowdhury, Cheuk-Wai Tai, Torbjoern Thiringer, Rakel Wreland Lindstroem, Maria Hahlin, Matthew J. Lacey
Summary: By combining electrochemical and material analysis, the study reveals that the loss of negative electrode material in the low state-of-charge (SoC) range is the main degradation mode in lithium ion batteries.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Atef El Jery, Moutaz Aldrdery, Ujwal Ramesh Shirode, Juan Carlos Orosco Gavilan, Abubakr Elkhaleefa, Mika Sillanpaa, Saad Sh. Sammen, Hussam H. Tizkam
Summary: The shortage of water resources has led to extensive research in the development of effective and affordable wastewater treatment methods. In this study, a modified catalyst was synthesized using wet impregnation and the hydrothermal technique. The catalyst showed excellent performance in a heterogeneous quasi-electro-Fenton reaction and remained stable under different operational conditions. The findings of this study clarify the potential of the heterogeneous zeolite catalyst in wastewater treatment.
Article
Engineering, Environmental
Edris Rezaei, Behrouz Jafari, Mohsen Abbasi, Seyed Abdollatif Hashemifard, Shahriar Osfouri, Mahmoud Ramazani, Nadir Dizge, Mika Sillanpaa
Summary: The purpose of this study is to reuse greywater and prevent its release into the environment. The combined method of membrane and advanced oxidation was used to reduce the COD to the standard value. Ten types of membrane samples with different concentrations of kaolin, alumina, and calcium carbonate were prepared. The results showed that the addition of calcium carbonate increased the porosity and average pore size of the membrane.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Mohammad K. Okla, M. Kalil Rahiman, Mostafa A. Abdel-Maksoud, Ibrahim A. Alaraidh, Abdulrahman A. Alatar, Saud S. Al-amri, Hamada AbdElgawad, Mika Sillanpaa, S. Sudheer Khan
Summary: In this study, an n-p-n nanohybrid material was designed and synthesized, which consisted of ultrathin-Bi2WO6, CoFe2O4 nanosheets, spherical MnWO4, and carbon quantum dots. The experimental results demonstrated that the nanohybrid material exhibited excellent visible light absorption and efficient Cefixime photodegradation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
