Upcycling battery waste into Zn-BTC metal organic framework for dual applications in electrochemical sensing of uric acid and antibacterial applications.

This study reports the sustainable synthesis of a zinc-based metal-organic framework (Zn-BTC MOF) using zinc, extracted from waste dry cell batteries. A three-step route involving zinc recovery, hydroxide precipitation, and solvothermal coordination with 1,3,5-benzenetricarboxylic acid (BTC) led to the formation of crystalline Zn-BTC. Comprehensive characterization, utilizing techniques such as XRD, FTIR, Raman, FESEM, TEM, XPS, EDS, and TGA-DSC, confirmed the formation of a highly ordered Zn-BTC MOF framework structure with nanoscale morphology and thermal stability.

Optimizing the Shell Thickness of Ag@TiO Nanostructures by a Simple Top-Down Method to Engineer Effective SERS Substrates and Photocatalysts.

In this article, we discuss a simple method to prepare core-shell Ag@TiO nanoparticles (NPs) with an optimized shell thickness to engineer plasmonic photocatalysts and surface-enhanced Raman scattering (SERS) substrates. Variation in the shell (TiO) thickness was analyzed by an acid-etching method, and the deterioration of the shell was traced by monitoring the extinction spectra of both colloidal and solid-supported Ag@TiO NPs. Attainment of the optimum shell thickness was confirmed by noticing the simultaneous appearance of the LSPR absorption band (at 450 nm) of core silver nanostructures ( = ∼10 nm) and the scattering signature of the shell (TiO) in the extinction spectrum of Ag@TiO NPs.

Plant extract-mediated green-synthesized CuO nanoparticles for environmental and microbial remediation: a review covering basic understandings to mechanistic study.

This review provides a comprehensive overview of nanoparticles, with a particular focus on plant extract-mediated green-synthesized copper oxide nanoparticles (CuO NPs). This article is one of the simplest to read as it aims at beginner researchers, who may not have advanced knowledge on topics like nanoparticles, including metal and metal oxide nanoparticles, their classification, and techniques to prepare them. Various synthesis procedures are discussed, emphasizing green synthesis methods that utilize plant extracts as reducing and stabilizing agents.

Repercussions of anthropogenic activities on soil contamination: sources, distribution, and health risks of arsenic and other non-radioactive metals in urban Bangladesh.

In recent decades, non-radioactive metals (n-RMs) and metalloids, notably arsenic (As), have become widespread in surface soil due to human-induced activities such as industrial operations, mining, agriculture, and untreated waste disposal. To determine the accumulation of such n-RMs in the soil content, samples were collected from an industrial area in Bangladesh and analyzed using Inductively Coupled Plasma-mass Spectrometry (ICP-MS). Results indicated that the mean concentrations (mg/kg) of n-RMs followed the order of Mn (428.

Green synthesis of silver-modified bacterial cellulose with enhanced antimicrobial activity for advanced biomedical application.

In this study, pure BC was biosynthesized and modified with silver (Ag) impregnation under an eco-friendly photocatalytic reduction reaction. For BC production, Acetobacter sp. was isolated from raw mango vinegar produced by the fermentation process under optimized conditions.

Investigation the effect of calcination heating rate on the structural, morphological, thermal and color properties of nano Cobalt Aluminate (CoAlO).

As the demand of ceramic ink is increasing rapidly for the decoration of good quality ceramic products in inkjet printing so the development of ceramic ink has become an urgent problem for ceramic industries. This study focuses on synthesizing Cobalt Aluminate (CoAlO), nanoparticles via sol-gel methods, utilizing different heating rate (1, 2, 3, 4, and 5°/min) during calcination. We investigate how these varying heating rates affect the properties of CoAlO nanoparticles.

Fabrication of novel ternary g-CN/ZnNiFeMnO/rGO hybrid nanocomposites for humidity sensing.

This research focuses on the fabrication of novel ternary g-CN/ZnNiFeMnO/rGO hybrid nanocomposites (NCs) for humidity sensing applications. The integration of carbon based two dimensional (2D) materials-reduced graphene oxide (rGO) and graphitic carbon nitride (g-CN)-with spinel ferrite nanoparticles (ZnNiFeMnO) in a ternary configuration aims to exploit their distinct properties synergistically, enhancing humidity sensing capabilities. ZnNiFeMnO, ZnNiFeMnO/rGO, and g-CN/ZnNiFeMnO have been synthesized for comparison.

Effect of low temperature calcination on micro structure of hematite nanoparticles synthesized from waste iron source.

Hematite (α-FeO) nanoparticles have been synthesized from waste source of iron which contains a prominent amount of iron (93.2 %) and investigated the effect of low temperature calcination. The two-step synthesis method involved preparing ferrous sulfate through acid leaching process followed by oxidation and calcination at temperatures ranging from 200 to 400 °C to produce the desired α-FeO in nano form.

Comprehensive review of phthalate exposure: Health implications, biomarker detection and regulatory standards.

Phthalates are a wide family of chemicals that are used in many different industrial applications used in many different industrial applications, including the production of plastics, toys, food packaging particularly for kids, and medical equipment. Due to their various chemical and physical properties, phthalates may negatively impact humans, animals, and the environment. Thus the potential for phthalate exposure and harm to humans, animals, and the environment is high because its presence is alarming.

Preparation and characterization of highly crystalline hydroxyapatite (HAp) from the scales of an anadromous fish (): a comparative study with the freshwater fish scale () derived HAp.

Waste generation from fish processing sectors has become a significant environmental concern. This issue is exacerbated in countries with high aquaculture production and inefficient fish scale (FS) utilization. This study prepared and compared highly crystalline hydroxyapatite (HAp) from the FS of an anadromous fish, (I-HAp), and a freshwater fish, (R-HAp).

Characterization and adsorption performance of nano-hydroxyapatite synthesized from waste seashells for Congo red dye removal.

In this research, nano-hydroxyapatite synthesized from seashells (Ss/nHAp) and the potential of Ss/nHAp as an adsorbent for eliminating Congo Red (CR) dye from aqueous solutions were explored. The synthesized Ss/nHAp was subjected to characterization using various techniques, including XRD, XPS, FTIR, Raman, BET, FESEM in order to understand the material thoroughly. Batch adsorption experiments were conducted to establish the optimal conditions for removing the dye, considering variables such as adsorbent dosage, contact time, pH and initial dye concentration.

Ag-Co ferrite-based magnetic polymeric composite film: a breakthrough in cationic dye remediation for sustainable environment.

The deployment of magnetically responsive and polymeric materials to remove dyes that are hazardous in aquatic environments has profoundly revolutionized environmental sustainability. This study focuses on removing the hazardous cationic Malachite Green (MG) dye from solutions, employing a novel magnetic composite film as an adsorbent, designated as AgCo FeO (ACFCeP). The composite was synthesized solvent casting, incorporating AgCo FeO nanoparticles and CeO into a cellulose acetate/polyvinylpyrrolidone (CA/PVP) polymer matrix.

Metal oxide-based photocatalysts for the efficient degradation of organic pollutants for a sustainable environment: a review.

Photocatalytic degradation is a highly efficient technique for eliminating organic pollutants such as antibiotics, organic dyes, toluene, nitrobenzene, cyclohexane, and refinery oil from the environment. The effects of operating conditions, concentrations of contaminants and catalysts, and their impact on the rate of deterioration are the key focuses of this review. This method utilizes light-activated semiconductor catalysts to generate reactive oxygen species that break down contaminants.

Development of lightweight structural concrete with artificial aggregate manufactured from local clay and solid waste materials.

The partial replacement of conventional natural coarse aggregate (NCA) with artificial light weight aggregate (LWA) manufactured from local clay and solid waste to develop a lightweight aggregate concrete (LWAC) for the structural use was studied in this paper. Red clay and Savar clay were used individually with solid wastes like rice husk ash (RHA) and waste glass to produce LWA. The suitability of raw materials and LWA was evaluated by investigating various properties.

Elucidation of structural, electromagnetic, and optical properties of Cu-Mg ferrite nanoparticles.

Copper doped magnesium ferrite, Mg-CuFeO(x = 0.0-1.0) nanomaterials were synthesized via.

Efficient removal of ciprofloxacin from aqueous solution using Zn-C battery derived graphene oxide enhanced by hydrogen bonding, electrostatic and π-π interaction.

In this study, graphene oxide (GO) derived from waste Zinc-Carbon (Zn-C) batteries was proposed for the efficient removal of antibiotics from the aqueous solution. Ciprofloxacin (CIP) antibiotic was selected as a typical contaminants. GO was prepared via an economical and environment-friendly route by using carbon rods from waste Zn-C batteries as the precursor.

Extraction of gamma iron oxide (γ-FeO) nanoparticles from waste can: Structure, morphology and magnetic properties.

In this work, the transformation of waste iron cans to gamma iron oxide (γ-FeO) nanoparticles following acid leaching precipitation method along with their structural, surface chemistry, and magnetic properties was studied. Highly magnetic iron-based nanomaterials, maghemite with high saturation magnetization have been synthesized through an acid leaching technique by carefully tuning of pH and calcination temperature. The phase composition and crystal structure, surface morphology, surface chemistry, and surface composition of the synthesized γ-FeO nanoparticles were explored by X-ray diffraction (XRD), Scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS) and Energy-dispersive X-ray spectroscopy (EDS).

XPS valence band observable light-responsive system for photocatalytic acid Red114 dye decomposition using a ZnO-CuO heterojunction.

ZnO-CuO composites were made as photocatalysts in a range of different amounts using an easy, cheap, and environment-friendly coprecipitation method due to their superior visible light activity to remove pollutants from the surrounding atmosphere. X-ray diffraction and Fourier transform infrared spectroscopy (FT-IR) have demonstrated that ZnO-CuO catalysts are made of highly pure hexagonal ZnO and cubic CuO. X-ray photoelectron spectroscopy has confirmed that there is a substantial interaction between the two phases of the resultant catalyst.

Source-specific geochemical and health risk assessment of anthropogenically induced metals in a tropical urban waterway.

Thorough deliberation is necessary to safeguard the tropical urban streams near the shoreline from human interference, as it is becoming a notable environmental danger. Consequently, an in-depth study was carried out on a significant urban waterway located on the southern seashore of Bangladesh, which is positioned in the Bengal delta, renowned as the largest delta in the globe. The current investigation assesses the potential health hazards associated with trace metals (Hg, Cu, As, Pb, Ni, Zn, Cd, Cr, Fe, and Mn) and uses chemometric analysis to determine where they originate.

Comparison of the Effect of Kaolin and Bentonite Clay (Raw, Acid-Treated, and Metal-Impregnated) on the Pyrolysis of Waste Tire.

This study investigates the effectiveness of kaolin and bentonite catalysts in improving liquid hydrocarbon yields during the pyrolysis of waste tires. Raw clay, nitric acid-treated clay, and mono- or bimetal-impregnated clay were used as catalysts in the pyrolysis of waste tire. Acid-treated kaolin produced a higher yield of liquid hydrocarbons (43.

Calcined chicken eggshell-derived biomimetic nano-hydroxyapatite as a local drug-delivery aid for doxycycline hyclate: characterization, bio-activity, cytotoxicity, antibacterial activity and release study.

The integration of bioactive substances with antibiotics has been extensively pursued for the treatment of osteomyelitis. These materials, also known as biomaterials, can serve both as bone replacements and targeted drug delivery systems for antibiotics. In this study, biomimetic nano-hydroxyapatite (nHAp) was synthesized the coprecipitation technique where waste chicken eggshell (WCE) was employed as the source of Ca.

Preparation and characterization of short date palm mat (DPM) fiber reinforced polystyrene composites: Effect of gamma radiation.

The utilization of natural fiber reinforced polymer composites is growing fast in numerous sectors. In this study, the effect of the addition of short date palm mat (DPM) fibers in polystyrene matrix on the physico-mechanical and thermal properties were studied. Short DPM fiber reinforced polystyrene composites were produced by compression moulding process and the fiber content was 5, 10, 15, 20 and 25 wt%.

Sediment-bound hazardous trace metals(oid) in south-eastern drainage system of Bangladesh: First assessment on human health.

Despite the beneficial aspect of a natural drainage system, increasing human-induced activities, which include urbanization and growth in industrialization, degrade the ecosystem in terms of trace metal contamination. In response, given the great importance of the south-eastern drainage system in Bangladesh, a detailed evaluation of the human health risk as well as the potential ecological risk of trace metals (Be, Cd, Co, Cr, Cu, Hg, Ni, Pb, Se, V, Zn, and As) in Karnaphuli riverbed sediment was conducted. Mean levels of the elements in mg/kg were As (5.