Article
Materials Science, Multidisciplinary
Trissa Saha, Mashrafi Bin Mobarak, Md Najem Uddin, Md Saiful Quddus, Mustafizur Rahman Naim, Nigar Sultana Pinky
Summary: In this study, copper (II) oxide nanoparticles (CuO NPs) were synthesized using Averrhoa carambola leaf extract for the first time, in order to meet the demand for green synthesis. The synthesized CuO NPs were characterized using various techniques, including XRD, XPS, FESEM, FTIR, DLS, zeta potential, and UV-Vis spectroscopy. The results showed that the CuO NPs had a monoclinic crystalline phase with a crystallite size of 24.84 nm. The NPs exhibited antibacterial activity against gram positive and gram negative bacteria, with Salmonella typhi and Escherichia coli being the most susceptible strains.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Polymer Science
Karla Deyanira Ayon-Macias, Anely Johanna Castaneda-Andrade, Juan Arturo Ragazzo-Sanchez, Montserrat Calderon-Santoyo
Summary: An antifungal coating made of zein nanofibers and jackfruit leaf extract was successfully prepared using electrospinning. The characteristics of the nanofibers and the encapsulated extract were analyzed using various techniques, including SEM, TGA, and HPLC-MS. The results showed that the encapsulated extract exhibited antimicrobial activity against Cladosporium tenuissimum and Aspergillus sydowii, and the nanofibers provided thermal protection for the compounds in the extract.
Article
Energy & Fuels
Prammitha Rajaram, Ambrose Rejo Jeice, Kumarasamy Jayakumar
Summary: The aim of this study was to develop highly active TiO2 nanoparticles through a novel green synthesis approach using Averrhoa carambola leaf extract and to investigate the effect of calcination temperature on the synthesis process. The synthesized TiO2 nanoparticles showed excellent photocatalytic degradation and antimicrobial activity, attributed to their small crystalline size and pure anatase phase. Therefore, they have potential applications in biomedical and wastewater treatment.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Environmental Sciences
Chanchal Das, Sanjay Singh, Snehasis Bhakta, Prashant Mishra, Goutam Biswas
Summary: This study presents a new approach to synthesizing Terminalia arjuna bark extract coated magnetite nanoparticles (TA@MNPs) for efficient removal of methylene blue (MB) and lead ions [Pb(II)] from wastewater. The synthesized TA@MNPs exhibited stability and high adsorption capacity for Pb(II). The results suggest that TA@MNPs could be a greener, cheaper, and convenient solution for water treatment.
Article
Engineering, Environmental
Eduardo Ravelo-Nieto, Sergio A. Ovalle-Serrano, Eduart A. Gutierrez-Pineda, Cristian Blanco-Tirado, Marianny Y. Combariza
Summary: In this study, a bio-nanocomposite based on cellulosic fique fibers decorated with magnetite nanoparticles was fabricated and found to have advanced oxidation capabilities. The composite material showed efficient color removal from indigo carmine solutions through heterogeneous Fenton-like reactions. Furthermore, the bio-nanocomposite demonstrated significant reductions in chemical oxygen demand, surfactant content, color, and turbidity when treating real wastewater samples.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Yi Chang, Shuting Chen, Tingting Liu, Peng Liu, Yuming Guo, Lin Yang, Xiaoming Ma
Summary: The paper proposes a bio-mediated strategy to synthesize biocompatible barium carbonate nanoparticles in living yeast cells, with the intracellular nanoparticles well-dispersed and the diameter successfully controlled at about 5 nm under mild conditions. This biosynthesis route can be universally applied to biosynthesize other kinds of components with good biocompatibility. The strategy not only presents a green and facile design for well-tailored nanomaterials but may also provide new insights for nanotechnology.
Article
Agriculture, Multidisciplinary
Syed Mohsan Raza Shah, Sana Fatima, Mansoor Hameed, Sana Basharat, Muhammad Sajid Aqeel Ahmad, Farooq Ahmad, Ansa Asghar, Majid Anwar, Fozia Yasmin, Muhammad Ashraf, Jazab Shafqat
Summary: This study investigated the allelopathic effects of Averrhoa carambola leaf extract on the growth, anatomical and physiological features of three wheat lines. The results showed that a lower concentration of leaf extract promoted growth and development, while a higher concentration significantly reduced growth and anatomical attributes. Therefore, Averrhoa leaf extract can be used as a growth promoter and higher concentrations are important for weed control.
CROP & PASTURE SCIENCE
(2023)
Article
Engineering, Chemical
Madhu Prakash Ganeshkar, Manisha Rajendra Mirjankar, Parashuram Shivappa, Anjana Thatesh Gaddigal, Premakshi Huchrayappa Goder, Chandrappa Mukappa Kamanavalli
Summary: Biogenic synthesis of selenium nanoparticles (SeNPs) using Averrhoa carambola leaf extract has been studied. The SeNPs showed a particle size of 124.7 nm and zeta potential of -23.20 mV. They exhibited antibacterial activity against Gram-negative pathogens and showed potential as carriers for drug delivery. In vitro cell viability assays revealed IC50 values of 174.33 +/- 10.58, 358.4 +/- 30.82, and 324.96 +/- 25.32 on HT-29, PC-3, and MCF-7 cells, respectively.
PARTICULATE SCIENCE AND TECHNOLOGY
(2023)
Article
Engineering, Environmental
Birol Isik, Ayse E. Kurtoglu, Gulten Gurdag, Gonul Keceli
Summary: The study investigates the removal of radioactive cesium ion (Cs-137) from wastewater using novel composite adsorbents. Characterization of the adsorbents and Cs+ ion sorption process were analyzed. Langmuir model was found to be suitable for the adsorption of Cs+ ion by the adsorbents, along with determination of various parameters like pore size and pore volume.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Feng Luo, Xiaonan Feng, Xiaoqing Jiang, Aijiao Zhou, Pengchao Xie, Zongping Wang, Tao Tao, Jun Wan
Summary: Lanthanum molybdate/magnetite with various LaCl3/Fe(3)O(4) mass ratios was synthesized and optimized for selective phosphate removal from wastewater. M-La-2(MoO4)(3)(2:1) was selected based on its phosphate sorption capacity and characterized through various methods. The study showed that M-La-2(MoO4)(3)(2:1) has high selectivity in phosphate removal and can be reused for multiple cycles, with an inner-sphere complexation mechanism.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Biology
Aklima Akter, Fahadul Islam, Sristy Bepary, Md Al-Amin, Md Zamshed Alam Begh, Md Al Fahad Ul Islam, Ghulam Md Ashraf, Saleh Salem Baeesa, Mohammad Fahad Ullah
Summary: Psychological stress and anxiety can impair neurobiological functions and reduce quality of life. Anxiolytic medications and natural product derived drugs have neuro-modulatory properties. This study found that A. carambola leaf extracts have CNS depressant and hypnotic effects.
Article
Biochemistry & Molecular Biology
Ana Lucia Campana, Amaimen Guillen, Ricardo Rivas, Veronica Akle, Juan C. Cruz, Johann F. Osma
Summary: This study investigates the feasibility of using functionalized substrates and nanoparticles for the removal of Cd from aqueous solution. The modified nanoparticles showed significant efficiency in Cd removal and the ability for recycling, with low toxicity. Various factors affecting adsorption, desorption, and potential toxicity effects were also explored.
Article
Chemistry, Inorganic & Nuclear
Madhu Prakash Ganeshkar, Premakshi Hucharayappa Goder, Manisha Rajendra Mirjankar, Anjana Thatesh Gaddigal, Parashuram Shivappa, Chandrappa Mukappa Kamanavalli
Summary: The green synthesis of metallic nanoparticles using plant extracts as reducing agents has shown promise due to their natural potential to reduce metallic ions. In this study, cerium oxide nanoparticles were successfully synthesized using Averrhoa carambola leaf extract as a green reducing agent. The nanoparticles exhibited antibacterial, antioxidant, and anticancer properties.
INORGANIC AND NANO-METAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Paweena Porrawatkul, Rungnapa Pimsen, Arnannit Kuyyogsuy, Nongyao Teppaya, Amnuay Noypha, Saksit Chanthai, Prawit Nuengmatcha
Summary: This study is the first to utilize Averrhoa carambola fruit extract as a reducing agent to synthesize Ag/ZnO composites for coating cotton fabric for antibacterial activity and UV protection. The research investigated the effects of silver nitrate concentration, applied power, reaction duration, and pH on nanoparticle yield. The treated cotton fabrics exhibited good antibacterial activity and excellent UV-blocking capacity.
Article
Environmental Sciences
Hongyu Shen, Dengjie Zhong, Yunlan Xu, Haixing Chang, Hui Wang, Chunzi Xu, Jiaxing Mou, Nianbing Zhong
Summary: In this study, a magnetic core-shell composite ZVI/Cu-PAA was synthesized and used for the removal of hexavalent chromium from wastewater. The optimal dosages of polyacrylate and Cu were determined, and the effect of coexisting ions on the removal performance was evaluated. The results demonstrated that ZVI/Cu-PAA showed excellent removal capacity and stability under specific conditions.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
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)
