The degradation of amoxicillin residue has been performed using TiO2 photocatalyst doped with Cr prepared from tannery wastewater under visible light exposure. incorporation metal into structure was conducted via hydrothermal method. From the characterization results, it is found that doping successfully shifted absorption region. Among various content in TiO2-Cr photocatalyst, TiO2-0.33Cr (medium level) shows highest ability absorption, suggesting to be best photocatalyst. It also clearly...

Environmental concerns drive the need for effective photocatalysts that can operate under visible light to degrade organic pollutants in wastewater. This study investigated TiO2-based photocatalyst doped with Ag and S enhance its visible-light response, modified further CoFe2O4 introduce magnetic properties, resulting a composite, CoFe2O4/TiO2-Ag/S. The synthesis was carried out by using cobalt nitrate hexahydrate ferric nonahydrate precursor, titanium tetraisopropoxide TiO2 silver thiourea...

ABSTRACT Persimmon tannin (PT) was immobilized onto CoFe 2 O 4 @SiO microspheres to create a novel core–shell nanostructured magnetic bioadsorbent. The as‐designed @PT used recover Au(III) ions. bioadsorbent synthesis performed with different reaction times of 2, 4, 6, 12, and 24 h PT core weight ratio 0.8, 1.0, 1.2, 1.5, 2.0. profile adsorption by the material in aqueous medium investigated batch system. XRD, FTIR, TEM, thermal analysis, VSM were analyze materials. experiments conducted pH...

The development of new antibacterial agents is proposed to solve the problem drug-resistant bacterial strains caused by antibiotic misuse. aim this study was improve activity modifying graphene oxide (GO) using ZnO/eugenol and analyzing interaction computationally. started with GO synthesis modified Hummer method, followed dispersion through mechanochemical method form GO/ZnO/eugenol composite. composite characterized XRD, FTIR, UV-vis, SEM, TEM. Results showed that sonochemical successfully...

This research studied the preparation of SiO2-TiO2/Cu(II) by utilizing rice husk ash as SiO2 precursor, and evaluated its efficiency a heterogeneous catalyst in biphenyl synthesis through Kumada cross-coupling reaction, which is widely known an important intermediate pharmacology agriculture manufacturing. In this study, was conducted extracting from ash, combining it with TiO2, introducing Cu(II) onto surface CuCl2·2H2O precursor various concentration Cu(II). Comprehensive characterization...

Humic acid (HA) extracted from peat soil according to the recommended procedure of International Substances Society (IHSS) has been tested remove AuCl4- aqueous solution. The removal was optimum at pH 2.0 and it mainly dictated by attachment through hydrogen bonding unionized carboxyl (–COOH) groups reduction action hydroxyl (–OH) gold (Au) metal. improved after HA purified repeated immersion shaking in a mixed solution containing 0.1 M HCl 0.3 HF. When purification led sharp decrease ash...

AbstractIt was carried out the synthesis of Cu(II) ionic imprinted polymer (Cu(II)-IIP) material amino-silica hybrid via sol-gel process using a tetraethyl-orthosilicate precursor and an active compound 3-aminopropyltrimetoxyslane. Adsorption ion on non-imprinted (NIP) Cu(II)-IIP follows pseudo-first-order kinetics model with value adsorption rate constants (k1) 0.030 0.058 L/min Langmuir isotherm capacity 29.556 71.400 mg/g, respectively. competition data in pair solution Cu(II)/Ag(I),...

Abstract Graphene derivative materials, such as graphene oxide (GO) and reduced (rGO), have garnered significant attention from scientists for over two decades due to their distinctive characteristics versatile applications across various fields, particularly in biomedical applications. Incorporating gold nanoparticles (AuNPs) into rGO sheets rGO-Au nanocomposites further enhances its performance This study presents a rapid efficient method synthesizing ultrasmall AuNPs anchored on (rGO-Au)...

Peat soil humin, obtained after the removal of fulvic and humic acid fractions according to recommended procedure International Humic Substances Society (IHSS), has ability remove AuCl − 4 ions from aqueous solution. The was greatest at medium acidity, which equivalent pH 2.0, it governed by two different processes, i.e. attachment onto un-ionized –COOH groups through hydrogen bonding reduction Au metal action –OH group. Purification humin repeated immersion shaking in a mixed solution...

Modification of silica gel with 3-aminopropyltrimethoxysilane and 3-mercaptopropyltrimethoxysilane through sol-gel technique producing amino-silica hybrid (HAS) mercapto-silica (HMS), respectively, has been carried out using tetraethylorthosilicate (TEOS) as source. The adsorbents were characterized infrared spectroscopy (IR), X-ray energy dispersion (EDX). Adsorption Cd(II) individually well its binary mixture Ni(II), Cu(II), Zn(II) in solution was performed a batch system. capacities ion...

A study of TiO2(rod)-SiO2 composites coated with polyaniline (PANI) has been performed. PANI was synthesized through in-situ polymerization aniline at various concentration (0.0137, 0.0274, and 0.0411 M) on the composite under acidic condition. confirmed by appearance C=N, C=C vibrations redshift band-gap from 3.14 eV for into 3.0 TSP01 composite. It is also shown that does not change crystal structure as XRD pattern. The TEM image shows a mixed SiO2 TiO2(rod)-PANI layers oxides layers....

Synthesis of magnetic photocatalyst, Fe3O4/TiO2-Co, with characterization and photoactivity examination have been conducted. The synthesis was initiated by preparation Fe3O4 particles using coprecipitation method. were then coated TiO2-Co at a various ratio Fe3O4:TiO2 concentration Co(II) dopant. Fe3O4/TiO2-Co characterized FTIR, XRD, TEM, SEM-EDX, VSM, SR UV-visible methods. Photoactivity the carried out methylene blue as target molecule in degradation reaction within batch system. By...

Fulvic acid-coated magnetite (Fe3O4–FA) has been synthesized through coprecipitation method using NH4OH. Synthesis conducted by cheap and environmentally friendly preparation used iron salts extracted fulvic acid (FA) from Peat soil of Rawa Pening, Central Java, Indonesia. Characterization FT–IR indicated that the coating FA on Fe3O4 occurred formation chemical bond between carboxyl group FA. The XRD measurement coated successfully dispersed in smaller size than uncoated Fe3O4, i.e. 16.67 to...

In this research, the effect of strontium oxide (SrO) and hydroxyapatite (HA) on properties mineral trioxide aggregate (MTA) have been studied. MTA contained 20% SiO2, 60% CaO, 2% Al2O3. Bi2O3 SrO added with 18% (w/w) total percentage. was prepared a sol-gel process using weak base (NH3) as catalyst calcined at 1000 °C for 3 h. The HA investigated by adding various percentages (3, 6, 9%) modified 5% SrO. (MTA-SrO-HA) products were hydrated water to weight ratio 3:1. results showed that...

Zeolite A has been synthesized by a modified alkali fusion followed hydrothermal process. Hydrothermal was performed at temperature of 90 °C for 4 h in stainless steel reactor. Characterization the zeolite conducted using various techniques, i.e. X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Fourier Transform Infrared Spectroscopy (FTIR), Brunauer-Emmett-Teller (BET) and measurement cation exchange capacity (CEC). The characterization results showed that selectively obtained...

Oriental Journal of Chemistry is a peer reviewed quarterly research journal pure and applied chemistry. It publishes standard papers in almost all thrust areas current chemistry academic commercial importance. provides platform for rapid publication quality papers, reviews letters. abstracted indexed reputed National International agencies.

The responsible mechanism and performance of peat soil humin for the sorption methylene blue (MB) p-nitrophenol (p-NP) have been investigated. Humin was obtained from Siantan, West Kalimantan, Indonesia, after removing content humic fulvic acids into a NaOH solution using recommended procedure International Humic Substances Society (IHSS). then purified by rigorous stirring in mixed HCl 0.1 M HF 0.3 M. Ash purification abruptly decreased 36.84 to 1.26 wt.% indicating that minerals other...