Article
Nanoscience & Nanotechnology
Gustavo Z. Girotto, Alisson S. Thill, Livia P. Matte, Marco A. H. Vogt, Thiago V. Machado, Luis F. P. Dick, Fabiano Mesquita, Fabiano Bernardi
Summary: This study investigates the different acting mechanisms of photocatalysts by heating nickel nanoparticles and supporting them on SrTiO3. It found that there is a direct association between the nickel oxidation state and the atomic mechanism of photodegradation, which improves the degradation of methylene blue.
ACS APPLIED NANO MATERIALS
(2022)
Article
Environmental Sciences
Zaheer Ahmad, Reena Tahir, Nazli Sajjad, Farah Batool, Noor Zada, Habib Ullah
Summary: The utilization of trimetallic nanoparticles shows promising potential for addressing the pollution caused by synthetic dyes in industrial water sources. These nanoparticles demonstrate remarkable degradation abilities when exposed to direct sunlight, offering a solution for color-related pollution in aquatic ecosystems. The study also examines the regeneration potential of the catalyst and identifies optimal operating conditions.
Article
Biochemistry & Molecular Biology
Mohamed Morsy, Ahmed I. I. Abdel-Salam, Islam Gomaa, Hesham Moustafa, Haitham Kalil, Ahmed Helal
Summary: The demand for reactive dyes has increased rapidly, resulting in the contamination of soil and water streams by dye-containing effluent waste. In response, researchers have focused on using functionalized nanomaterials to remove these harmful dyes. A 3D polyurethane foam loaded with reduced graphene oxide (rGO) and ZnO nanocomposite has been proposed as an efficient structural design for dye degradation under visible light. The synthesized structure exhibited an exceptional adsorption capacity for the degradation of Methylene blue (MB) dye, with complete degradation observed within 3 hours.
Article
Chemistry, Physical
Muhammad Imran Din, Rida Khalid, Zaib Hussain
Summary: This study successfully synthesized poly-(N-isopropylmethacrylamide-co-methacrylic acid) microgels for stabilizing copper oxide nanoparticles and used them as catalysts for dye degradation. The microgels not only functioned as microreactors, but also efficiently synthesized CuO NPs. The CuO NPs loaded microgel catalyst showed excellent performance in dye degradation.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Inorganic & Nuclear
Aubrey Makofane, Popoti J. Maake, Morongwa M. Mathipa, Nolubabalo Matinise, Franscious R. Cummings, David E. Motaung, Nomso C. Hintsho-Mbita
Summary: In this study, nickel ferrite nanoparticles were synthesized using an environmentally friendly method and it was found that the 500°C calcined NiFe2O4 nanostructures exhibited remarkable performance in degrading dyes, antibiotics, and bacteria. The application of these ferrite nanoparticles in environmentally friendly pollutant degradation shows great potential.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Jiamei Zhao, Xinyue Cao, Yibo Bai, Jie Chen, Conglu Zhang
Summary: In this study, g-C3N4 modified CaTiO3 photocatalyst was prepared and characterized. The optimized CaTiO3/g-C3N4 showed high efficiency in the removal of methylene blue (MB) and levofloxacin (LVF) under mercury lamp illumination. The effects of photocatalyst dosage, solution pH, and co-existing ions in water were investigated, and a charge transmission mechanism and LVF degradation pathway were proposed. This work presents a new strategy for the synthesis of cost-effective CaTiO3 composites.
Article
Engineering, Environmental
Wenqiang Liu, Meng Zhou, Heqing Fu
Summary: A ternary Ag@ZnO@Ti3C2 MXene heterojunction (AZM) is synthesized to enhance photocatalytic activity by compensating for MXene's narrow bandgap with ZnO and Ag nanoparticles. The optimized AZM heterojunction photocatalyst shows high degradation efficiency for organic dyes under visible light irradiation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Ceramics
Zaheer Ahmed Ujjan, Muhammad Ali Bhatti, Aqeel Ahmed Shah, Aneela Tahira, Nek Muhammad Shaikh, Shusheel Kumar, Abdul Qayoom Mugheri, Shymaa S. Medany, Ayman Nafady, Fahad Alnjiman, Melanie Emo, Brigitte Vigolo, Zafar Hussain Ibupoto
Summary: In this study, sulfide and chloride ions were successfully doped into ZnO through hydrothermal method. The doped ZnO nanostructures showed no significant change in morphology, retaining the wurtzite crystal structure with a red shift in XRD results. The successful doping of sulfide and chloride ions was confirmed by elemental analysis. Importantly, the optical band gap of ZnO was reduced upon doping, leading to enhanced photocatalytic properties. The doped ZnO photocatalyst achieved a high photo-degradation efficiency of methylene blue.
CERAMICS INTERNATIONAL
(2022)
Article
Polymer Science
Ahmed Abutaleb
Summary: Simple and inexpensive techniques were used to synthesize copper nanoparticle decorated titania nanofibers using electrospinning and hydrothermal methods. These composite nanofibers showed good photocatalytic activity for dye degradation and hydrogen production.
Article
Chemistry, Inorganic & Nuclear
Abhishek Bhapkar, Rishi Prasad, Dipika Jaspal, Mandar Shirolkar, Kh. Gheisari, Shekhar Bhame
Summary: Zinc oxide nanoparticles were successfully synthesized using glycine nitrate solution combustion synthesis. The synthesized nanoparticles exhibited a pure hexagonal wurtzite-like structure of ZnO. They showed effective visible light catalytic activity in the degradation of methylene blue dye, degrading 98% of the dye in 120 minutes with 0.1 g/L of catalyst loading. Photoluminescence studies suggested that the enhanced photocatalytic activity may be attributed to the presence of singly ionized oxygen vacancy or intrinsic defects.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Environmental Sciences
Asif Nisar, Muhammad Saeed, Majid Muneer, Muhammad Usman, Iltaf Khan
Summary: The study reports the synthesis of ZnO-reduced graphene oxide catalyst for degradation of methylene blue, showing its high efficiency in dye removal and recyclability. Analysis of reaction kinetics revealed the Langmuir-Hinshelwood mechanism as the main kinetics mechanism for photodegradation of methylene blue.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Asghar Ali, Muhammad Amin, Muhammad Tahir, S. S. Ali, Asif Hussain, Imtiaz Ahmad, Asif Mahmood, M. Umer Farooq, Muhammad Asim Farid
Summary: This study synthesized g-C3N4, Fe3O4, and g-C3N4/Fe3O4 composites using the solid-state reaction technique. XRD confirmed the formation of g-C3N4, Fe3O4, and a g-C3N4/Fe3O4 heterostructure. SEM showed the rod-shaped structure of Fe2O3 and the layered-like fabrication of g-C3N4. The g-C3N4/Fe3O4 composite exhibited high photocatalytic activity against methylene blue (MB) dye.
FRONTIERS IN MATERIALS
(2023)
Article
Chemistry, Physical
Italo Lacerda Fernandes, Danns Pereira Barbosa, Sergio Botelho de Oliveira, Valdeir Antonio da Silva, Marcelo Henrique Sousa, Marly Montero-Munoz, Jose A. H. Coaquira
Summary: The study demonstrates that the double-coated magnetic nanoparticles nanocomposites exhibit excellent photocatalytic activity with strong degradation capability against methylene blue dye, as well as high stability. These nanocomposites have great potential for applications in wastewater treatment and purifying contaminants.
APPLIED SURFACE SCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Mahjoub Jabli
Summary: Green synthesis of copper oxide (CuO) nanoparticles was achieved by extracting alkali lignin from virgin populus tremula. The nanoparticles were characterized using FT-IR, XRD, SEM, EDX, and TEM, revealing the influence of different phytochemical constituents of lignin extract on the production of CuO nanoparticles. The prepared CuO nanoparticles exhibited a mean size of 12.4 nm and rectangular patterns due to the presence of lignin on the surface. Furthermore, these nanoparticles showed excellent adsorption capacity for methylene blue removal from water under specific conditions (T = 20 °C, pH = 6, and time = 60 min).
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Engineering, Environmental
Meirong Zong, Duo Song, Xin Zhang, Xiaopeng Huang, Xiancai Lu, Kevin M. Rosso
Summary: Research has shown that the exposure of different crystal facets in hematite nanostructures affects the adsorption and photodegradation efficiency of methylene blue, mainly due to variations in iron ion sites and surface structures. Experimental comparisons and theoretical calculations on the (001) and (012) facets reveal that the (001) facet exhibits a higher photodegradation rate for methylene blue.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Applied
Soumya Ranjan Mishra, Md. Ahmaruzzaman
Summary: This review focuses on the identification and removal of microplastics, as well as their toxicity and effects. It also discusses the changes in properties of plastics upon degradation, the characterization of microplastics, and the source, fate, and transportation of microplastic debris. Efficient methodologies for microplastic removal, such as adsorption, filtration, and chemical methods, are explored along with their applications, mechanisms, advantages, and limitations.
SEPARATION AND PURIFICATION REVIEWS
(2023)
Article
Engineering, Environmental
Soumya Ranjan Mishra, Vishal Gadore, Md. Ahmaruzzaman
Summary: A glycerol-mediated novel CdSnS2 atom cluster was fabricated using one-pot co-precipitation to address concerns about environmental harm from hazardous organic compounds. The synthesized catalyst showed excellent adsorption and Fenton-like degradation performance on organic compounds such as rose Bengal and methylene blue. The structural and morphological characterization of the material was conducted using various techniques including XRD, SEM, EDAX, FTIR, XPS, TEM, N-2 adsorption, and UV/vis spectrophotometry.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Review
Biotechnology & Applied Microbiology
Nidhi Yadav, Gaurav Yadav, Md Ahmaruzzaman
Summary: Sulfonated polycyclic aromatic carbon (SPAC) catalysts with specific surface characteristics have been widely used in various applications due to their high acid density and enhanced catalytic activity. Biomass-derived SPAC catalysts have unique surface characteristics, high reusability, and low cost, making them environmentally friendly options for biodiesel production. This review discusses the catalytic performance, reaction parameters, mechanism, and future development of SPAC catalysts for biodiesel production.
BIOFUELS BIOPRODUCTS & BIOREFINING-BIOFPR
(2023)
Review
Environmental Studies
Nidhi Yadav, Md Ahmaruzzaman
Summary: Metal ferrites like nickel ferrite, copper ferrite, zinc ferrite, cobalt ferrite, and other ferrites are commonly used as catalysts in various transformations. However, CaFe2O4, the most abundant alkali metal ferrite, is eco-friendly and non-toxic, and has magnetic properties that facilitate easy recovery from reaction media. It has been extensively used in applications such as dye degradation, heavy metal ion removal, transesterification reaction, gas sensing, photocatalytic water splitting, and drug delivery. This review discusses the magnetic properties and crystal structure of spinal CaFe2O4, its potential applications, various synthesis techniques, and its remarkable potential for energy and environmental remediation. The review also includes the photocatalytic mechanism of various pollutants and provides future perspectives for developing novel, sustainable CaFe2O4 or CaFe2O4-based nanocomposites.
ENERGY & ENVIRONMENT
(2023)
Article
Energy & Fuels
Nidhi Yadav, Gaurav Yadav, Mohammed Ahmaruzzaman
Summary: A solid heterogeneous acid catalyst, SO3H-ARNH-12, was synthesized by sulfonation of activated carbon derived from areca nut husk. The catalyst exhibited excellent conversion of 99.15±0.4% within a short reaction time (30 min) under optimized conditions. Different types of alcohols were found to affect the biodiesel yield. The catalyst's catalytic activity was observed for up to six cycles, providing a sustainable solution for biodiesel synthesis.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2023)
Review
Chemistry, Inorganic & Nuclear
Gaurav Yadav, Md. Ahmaruzzaman
Summary: Recently, ternary metal chalcogenides, especially CdIn2S4 (CIS), have gained significant attention as excellent materials for energy generation and environmental remediation. CIS is a highly efficient, low-cost photocatalyst with superior visible light absorption, thanks to its chemical stability, ease of synthesis, and tunable band gap. Various modifications, such as element doping, co-catalyst deposition, and heterojunction construction, have been used to enhance the catalytic performance of CIS, making it suitable for applications in CO2 reduction, environmental remediation, photocatalytic organic transformations, photoelectrochemical, and H-2 production by water spilling. Challenges and future perspectives for the further development of CdIn2S4 for energy and environmental applications are also discussed in this review.
INORGANIC AND NANO-METAL CHEMISTRY
(2023)
Article
Environmental Sciences
Saptarshi Roy, Jnyanashree Darabdhara, Mohammed Ahmaruzzaman
Summary: In this study, an effective photocatalyst was designed by incorporating Cu-MOF with ZnO for the photocatalytic degradation of Rose Bengal. The prepared nanocomposite exhibited excellent degradation efficiency of 97.4% in 45 min under natural sunlight with a catalyst dosage of 320 mg/L. The optical, morphology, and surface characteristics of the nanocomposite were investigated using various characterization techniques.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Chemistry, Multidisciplinary
Gaurav Yadav, Nidhi Yadav, Md. Ahmaruzzaman
Summary: Biodiesel, as a safer and environmentally friendly biofuel, has been extensively studied to reduce dependence on fossil fuels and mitigate climate change. However, the use of heterogeneous solid catalysts in industrial-scale biodiesel production poses challenges due to deactivation effects, porosity, surface area, material stability, and lower reactivity. Recent research focuses on the development of sulfonated catalysts derived from waste biomass to overcome these challenges and achieve simple and low-cost manufacturing processes.
Review
Environmental Sciences
Vishal Gadore, Soumya Ranjan Mishra, Md. Ahmaruzzaman
Summary: Water pollution caused by organic dyes is a significant threat to the ecosystem. Metal sulphides have emerged as a potential solution for water remediation. This review summarizes the potential application of metal sulphides for the photocatalytic degradation of organic dyes from wastewater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Musfica Sultana, Md Ahmaruzzaman
Summary: The purpose of this research is to study the photoactivity of a biogenic, affordable, and highly effective Ce-Ni@biochar catalyst in removing crystal violet and malachite green oxalate. The catalyst, synthesized using a liquid phase reduction method, combines cerium and nickel nanoparticles with rice husk biochar for photocatalytic degradation of organic dyes in the presence of sunlight. Various characterization techniques were used to evaluate the chemical composition, morphology, and topography of the catalyst. The embedded nanoparticles on biochar enhance charge separation, resulting in a significant decrease in electron-hole recombination rate and a high level of photocatalytic activity. The fabricated nanocatalyst shows excellent photoactivity, degrading 96% and 99% of crystal violet and malachite green oxalate within 35 and 25 minutes, respectively. The catalyst's reusability adds to its novelty and importance in addressing the growing industrial effluents.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Akshay Kumar Dey, Soumya Ranjan Mishra, Md. Ahmaruzzaman
Summary: In this study, a novel nanocomposite, Zn-modified CeO2@biochar, was synthesized via a one-step sol-precipitation method to investigate its photocatalytic activity for the removal of methylene blue dye. The nanocomposite exhibited significant photocatalytic activity and highest degradation efficiency of 98.24% under direct solar irradiation of 90 min, at an optimum dosage of 0.2 g l(-1) catalyst and 10 ppm dye concentration, in the presence of 25% (V/V) 0.2 ml (4 mu l/ml) hydrogen peroxide. The improved photodegradation performance was attributed to the generation of hydroxyl radical from H2O2 during the photo-Fenton reaction process.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Review
Environmental Sciences
Anindita Bhuyan, Md. Ahmaruzzaman
Summary: With the increase in human population, large amounts of wastewater generated each year and decrease in fresh water availability due to rapid industrialization and agricultural development, the presence of pharmaceutical compounds in various water sources has become a global concern. Efficient removal of these pollutants remains a challenging task, and adsorption techniques using nanoadsorbents have emerged as a popular and cost-effective method for wastewater treatment. This review focuses on the remediation techniques using carbon nanotubes, metal oxides, nanoclay, and new-generation MXenes for pharmaceutical waste treatment via adsorption, highlighting their excellent adsorptive properties and factors affecting adsorption.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Chemical
Soumya Ranjan Mishra, Vishal Gadore, Md. Ahmaruzzaman
Summary: The study focused on synthesizing cadmium-doped CdIn2S4 incorporated in chitosan to form quantum dots for efficient photodegradation of hazardous pollutants. Various characterization methods were used, and the prepared Cd/CdIn2S4@Ch quantum dots showed excellent photodegradation efficiency and stability, with the ability to be recycled multiple times.
Article
Chemistry, Physical
Soumya Ranjan Mishra, Vishal Gadore, Md. Ahmaruzzaman
Summary: This review summarizes the advancements in CO2 photocatalytic reduction using In2S3-based photocatalysts, focusing on overcoming the limitations in CO2 adsorption/activation and reduction efficiency. It highlights the surface reactions, variables controlling reaction paths and selectivity, and the charge transfer mechanism. The potential and needed developments for CO2 photoreduction over In2S3-based photocatalysts are also discussed.
CHEMICAL PHYSICS IMPACT
(2023)
Article
Engineering, Environmental
Vishal Gadore, Soumya Ranjan Mishra, Md. Ahmaruzzaman
Summary: This study presents the synthesis of a novel ternary Z-scheme Ag/HAp/SnS2 nano photocatalyst for the degradation of metronidazole in wastewater under natural sunlight. The photocatalyst demonstrated a high degradation efficiency and showed potential for organic pollutant degradation in real wastewater. The incorporation of SnS2 enhanced the photocatalytic activity by delaying electron-hole recombination.
JOURNAL OF HAZARDOUS MATERIALS
(2024)