One-step synthesis of CuInS2 nanoparticles using aqueous chelated metal complexes as a starting material

Goto, Mitsuo; Sato, Kazumi; Yokoyama, S.; Takahashi, Hideyuki

doi:10.1007/s10854-021-05616-z

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“…Amid several inorganic nanoparticles (NPs), CuInS 2 (CIS) has received importance due to its low toxicity owing to the absence of lead and cadmium. CIS belongs to the I–III–VI 2 group having a tetragonal structure and possesses a direct band gap of ∼1.5 eV when in the bulk form . The CIS NPs find applications in numerous fields including photovoltaic devices, , light-emitting diodes, , photocatalysis, , bioimaging, , and so forth.…”

Section: Introductionmentioning

confidence: 99%

“…CIS belongs to the I−III−VI 2 group having a tetragonal structure and possesses a direct band gap of ∼1.5 eV when in the bulk form. 10 The CIS NPs find applications in numerous fields including photovoltaic devices, 11,12 light-emitting diodes, 13,14 photocatalysis, 15,16 bioimaging, 17,18 and so forth. Since NPs possess a larger surface-to-volume ratio than the bulk, they efficiently interact with tissues to provide a large number of active sites, resulting in effective biological activities.…”

Section: Introductionmentioning

confidence: 99%

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Biocompatible CuInS₂ Nanoparticles as Potential Antimicrobial, Antioxidant, and Cytotoxic Agents

Giri

Chaki

Khimani³

et al. 2021

ACS Omega

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A simple hydrothermal route is employed to synthesize pure copper indium disulfide (CIS) and CIS nanoparticles (NPs) mediated by various natural plant extracts. The plant extracts used to mediate are Azadirachta indica (neem), Ocimum sanctum (basil), Cocos nucifera (coconut), Aloe vera (aloe), and Curcuma longa (turmeric). The tetragonal unit cell structure of as-synthesized NPs is confirmed by X-ray diffraction. The analysis by energy-dispersive X-rays shows that all the samples are nearstoichiometric. The morphologies of the NPs are confirmed by high-resolution scanning and transmission modes of electron microscopy. The thermal stability of the synthesized NPs is determined by thermogravimetric analysis. The optical energy band gap is determined from the absorption spectra using Tauc's equation. The antimicrobial activity analysis and the estimation of the minimum inhibitory concentration (MIC) value of the samples are performed for Escherichia coli, Pseudomonas aeruginosa, Proteus vulgaris, Enterobacter aerogenes, and Staphylococcus aureus pathogens. It shows that the aloe-mediated CIS NPs possess a broad inhibitory spectrum. The best inhibitory effect is observed against S. aureus, whereas the least effect was exhibited against P. vulgaris. The least MIC value is found for aloe-mediated CIS NPs (0.300 mg/mL) against S. aureus, P. aeruginosa, and E. aerogenes, along with basil-mediated NPs against E. coli. The antioxidant activity study showed that the IC 50 value to inhibit the scavenging activity is maximum for the control (vitamin C) and minimum for pure CIS NPs. The in vivo cytotoxicity study using brine shrimp eggs shows that the pure CIS NPs are more lethal to brine shrimp than the natural extract-mediated CIS NPs. The in vitro cytotoxicity study using the human lung carcinoma cell line (A549) shows that the IC 50 value of turmeric extract-mediated CIS NPs is minimum (15.62 ± 1.58 μg/mL). This observation reveals that turmeric extract-mediated CIS NPs are the most potent in terms of cytotoxicity toward the A549 cell line.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Biocompatible CuInS₂ Nanoparticles as Potential Antimicrobial, Antioxidant, and Cytotoxic Agents

Giri

Chaki

Khimani³

et al. 2021

ACS Omega

View full text Add to dashboard Cite

show abstract

One-step synthesis of CuInS2 nanoparticles using aqueous chelated metal complexes as a starting material

Cited by 1 publication

References 36 publications

Biocompatible CuInS₂ Nanoparticles as Potential Antimicrobial, Antioxidant, and Cytotoxic Agents

Biocompatible CuInS₂ Nanoparticles as Potential Antimicrobial, Antioxidant, and Cytotoxic Agents

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One-step synthesis of CuInS2 nanoparticles using aqueous chelated metal complexes as a starting material

Cited by 1 publication

References 36 publications

Biocompatible CuInS2 Nanoparticles as Potential Antimicrobial, Antioxidant, and Cytotoxic Agents

Biocompatible CuInS2 Nanoparticles as Potential Antimicrobial, Antioxidant, and Cytotoxic Agents

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Biocompatible CuInS₂ Nanoparticles as Potential Antimicrobial, Antioxidant, and Cytotoxic Agents

Biocompatible CuInS₂ Nanoparticles as Potential Antimicrobial, Antioxidant, and Cytotoxic Agents