A green, simple, and rapid synthesis of gold nanoparticles using plant extract, Cryptolepis buchanani Roem. Schult, their applications are first described in this paper. The formation was visually observed by the appearance a ruby red color, which further indicated an absorption peak at 530 nm UV-Vis spectroscopy. Optimization reaction parameters for also investigated. Various analytical techniques were employed as part process characterizing resulting nanoparticles. Fourier transform...

This work reports on the ability of Clitoria ternatea aqueous flower extract to prepare biogenic silver nanoparticles (AgNPs). The obtained AgNPs were used as efficient nanocatalysts for elimination methyl orange, a carcinogenic azo dye, from an solution. Several parameters that affected formation examined. prepared characterised by UV-Vis spectroscopy, FTIR, SEM-EDX, XRD, TEM, and zeta potential. was confirmed development yellowish-brown colour which further proved surface plasmon peak at...

Abstract This study investigates the antiplasmodial activity of ultrafine silver nanoparticles (AgNPs, 2–5 nm) synthesized using a green approach involving Mitragyna speciosa extract and emphasizing microwave-assisted irradiation technique. Various synthesis parameters were optimized, resulting in successful production spherical AgNPs, which exhibited characteristic surface plasmon resonance peak at around 440 nm. The AgNPs demonstrated high stability, indicated by zeta potential value −28...

A novel copper (II) ions [Cu(II)]-graphene oxide (GO) nanocomplex-modified screen-printed carbon electrode (SPCE) is successfully developed as a versatile electrochemical platform for construction of sensors without an additionally external redox probe. simple strategy to prepare the GO-modified SPCE described. Such GO based on adsorbed Cu(II) prepared by incubation in solution. This work demonstrates fabrications two kinds sensors, i.e., new label-free immunosensor and non-enzymatic sensor...

A laboratory experiment utilizing locally available Indian Gooseberry (Phyllanthus emblica Linn.) extract as a bioreagent to determine iron(III) is described with the goal of providing students hands-on experience in spectrophotometry and green chemistry. Spectrophotometry was used measure concentration complex formed between gallic acid, an active compound found extract. Excellent results from quantitative analysis water were achieved. In this case, replace conventional hazardous chemicals...

In this study, we report on the synthesis and characterization of ultrafine silver nanoparticles (AgNPs) incorporated in MIL-100(Fe) metal-organic frameworks (Ag@MIL-100(Fe)) for efficient catalytic reduction dyes water treatment applications. The Ag@MIL-100(Fe) were synthesized using a one-step effective technique characterized various techniques, including X-ray diffraction, transmission electron microscopy, ultraviolet visible spectroscopy. results showed that highly stable had an average...

This paper describes an inquiry-based integrated laboratory project for green synthesis, characterization, and applications of silver gold nanoparticles. In this project, students were able to choose their choice plant extract as reducing stabilizing agents, the also designed own experiments. course gave experience conducting research in fields analytical chemistry or materials science, which helped develop abilities critical creative thinking, problem-solving, skills.

A sequential injection analysis (SIA) spectrophotometric method for the determination of trace amount mercury (II) with pyrogallol red (PGR) was described. The based on measurement absorbance (II)–PGR complex, yielding a light yellow-coloured product at pH 9.0 absorption maximum 370 nm. SIA parameters affecting signal response were optimised in order to obtain better sensitivity and minimum reagent consumption. linear range over 0.1–2.0 mg L−1. limit detection quantification, calculated...

A spectrophotometric microfluidic bioreactor system is described for the determination of organophosphorus pesticides. The glass chip was designed and fabricated in situ monolithic preparation subsequently acetlycholineserase (AChE) immobilization via a covalent bonding method. porous polymer monolith prepared using glycidyl methacrylate, ethylenedimethacrylate 2,2-dimethoxy-1,2-diphenylethan-1-one binary porogenic solvents cyclohexanol dodecanol. epoxide groups were reacted with...

A monolith based immobilized acetylcholinesterase (AChE) flow-through reactor has been developed for the determination of copper(II) using flow injection spectrophotometric system. The bioreactor was prepared inside a microcapillary column by in situ polymerization butyl methacrylate, ethylene dimethacrylate, and 2,2-dimethoxy-1,2-diphynyletane-1-one presence 1-decanol, followed vinyl azlactone functionalization AChE immobilization. behavior before after being on evaluated kinetic parameters...

A simple reverse flow injection spectrophotometric determination of copper(II) was developed. The sensitivity enhancement the reaction between and pyrogallol red by cetyltrimethylammonium bromide, a cationic surfactant then described. formation ternary complex created violet colour in an acetate buffer at pH 5.0 exhibited absorption maxima 600 nm. optimum conditions both chemical parameters for monitoring were found examined. Experimental results showed linear response over concentration...

Modification of a minicomputer numerical controller with low cost diode laser for fabrication polymethyl methacrylate chips has been demonstrated. The maximum power the was 5 W at 808 nm. scanning speed 1.0–10.0 mm s−1 by movement x and y stages. patterns microchannels on chip were designed using drawing software then applied to that controlled operation controller. parameters affected channel depth, width, smoothness studied varying sheets surface area 4.0 × 6.0 cm2 thickness 0.1 cm....

In addressing the need for safer and more accessible chemistry lab procedures, this work integrates green small-scale concepts to serve as a laboratory model both qualitative quantitative analyses of iron(III). An aqueous extract Indian gooseberry is utilized natural reagent form complex with iron(III), resulting in distinctive dark purple complex. This reaction selective intensity color directly proportional its concentration sample. The boxset, designed range teaching environments,...