Evidence map›Paper›PMID 30905020›Full record

ArticleEnvironmental science and pollution research international2019

Preparation and optimization photocatalytic activity of polymer-grafted Ag@AgO core-shell quantum dots.

Marziyeh Mohammadi, Seyedeh Hoda Hekmatara, Razieh Shekari Moghaddam, Ali Darehkordi

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Article in Environmental science and pollution research international, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

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0cells of the map it votes in
2citing papers in PubMed
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1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed.

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4 · The record

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PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors.

Marziyeh MohammadiDepartment of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, P.O. Box 77139-36417, Rafsanjan, Iran. m.mohammadi@vru.ac.ir.
Seyedeh Hoda HekmataraDepartment of Physics, Faculty of Science, Vali-e-Asr University of Rafsanjan, P.O. Box 77139-36417, Rafsanjan, Iran.
Razieh Shekari MoghaddamDepartment of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, P.O. Box 77139-36417, Rafsanjan, Iran.
Ali DarehkordiDepartment of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, P.O. Box 77139-36417, Rafsanjan, Iran.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A linear-dendric copolymer containing polyethylene glycol-polycitric acid used as a capping agent to the green inter-matrix synthesis of silver/silver oxide core-shell quantum dots (Ag@AgO QDs). Water-soluble Ag@AgO QDs were synthesized with high yield and narrow size distribution. Here, Ag ions were trapped in the polymer branches and covalently bonded to it. Another sample of Ag@AgO QDs was synthesized through the same method and conditions without any capping agent (raw nanoparticles). Structure, size distribution, and morphology of raw and copolymer-grafted nanoparticles were identified using X-Ray diffraction, field emission scanning electron microscopy (FESEM), and high-resolution transmission electron microscopy (HRTEM). The results from XRD pattern and UV spectra confirmed the Ag@AgO structure of both nanoparticles. From the FESEM image, the size of Ag nanoparticles obtained at the range of 1-20 nm. HRTEM image of grafted nanoparticles directly showed that these nanoparticles have very tiny size in the range of 1-2 nm and presented in the form of core-shell Ag@AgO. Thus, both raw and polymer-grafted samples are in the range of quantum dots (QDs). Raw and polymer-grafted Ag@AgO QDs which take the advantage of water solubility and biosafety, were used as photocatalyst for degradation of cationic methylene blue (MB) and anionic methyl orange (MO) dyes at low and high concentrations of each dye. Results shows using polymer-grafted QDs leads to a significant enhancement both in the efficiency and rate of dye degradation, compared to the case of using raw nanoparticles.

Indexed as

Azo CompoundsColoring AgentsMetal NanoparticlesMicroscopy, Electron, TransmissionPolymersQuantum DotsSilverWaterX-Ray DiffractionAzo CompoundsColoring Agentsmethyl orangePolymersSilverWaterAg@AgOBiocompatible polymerCore-shellPhotocatalytic activityQuantum dots

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.