The DOI matches its Crossref record; 56 of the 56 references it cites were found in a registry or an index.
Synthesis, characterization and catalytic activity of gold nanoparticles biosynthesized with Rhizopus oryzae protein extract
Abstract
A simple one-pot green chemical method for the biosynthesis of gold nanoparticles (AuNPs) by reducing chloroauric acid (HAuCl4) with protein extract of Rhizopus oryzae to produce novel gold nano-bio-conjugates (AuNBC) is described. AuNBCs, having sizes ranging from 5 to 65 nm, were synthesized by altering the HAuCl4–protein extract ratio. The conjugates were characterized by spectroscopic, electron microscopic, light scattering and electrophoretic mobility measurements. It was found that the aqueous AuNBC suspensions exhibited excellent stability over a wide range of ionic strength, pH and temperature. The effect of pH and ionic strength indicated that stabilization is due to electrostatic repulsion arising from the negative charge of the conjugate proteins. The AuNBCs were stable at temperatures lower than the denaturation temperature of the fungal proteins. The catalytic activity of the as-synthesized AuNBCs was quantified by analysing the reduction of p-nitrophenol by borohydride. The conjugates exhibited interesting size and shape dependent catalytic activity, which was stronger than that observed for AuNPs prepared by conventional chemical methods. The catalytic activity was found to be sensitive to both the surface-area-to-volume ratio and the thickness of the protein coating on the NP.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Daniel, M.-C., & Astruc, D. (2004) · Chemical Reviews · doi:10.1021/cr030698+ · Cited by 12,446
Green synthesis of metal nanoparticles using plants
Iravani, S. (2011) · Green Chemistry · doi:10.1039/c1gc15386b · Cited by 3,823
Eustis, S., & El-Sayed, M. A. (2006) · Chem. Soc. Rev. · doi:10.1039/b514191e · Cited by 3,143
Some Interesting Properties of Metals Confined in Time and Nanometer Space of Different Shapes
El-Sayed, M. A. (2001) · Accounts of Chemical Research · doi:10.1021/ar960016n · Cited by 2,773
Protein-Directed Synthesis of Highly Fluorescent Gold Nanoclusters
Xie, J., Zheng, Y., & Ying, J. Y. (2009) · Journal of the American Chemical Society · doi:10.1021/ja806804u · Cited by 2,590
Shape Control of Colloidal Metal Nanocrystals
Tao, A. R., Habas, S., & Yang, P. (2008) · Small · doi:10.1002/smll.200701295 · Cited by 2,408
Link, S., & El-Sayed, M. A. (2000) · International Reviews in Physical Chemistry · doi:10.1080/01442350050034180 · Cited by 2,374
Size matters: why nanomaterials are different
Roduner, E. (2006) · Chemical Society Reviews · doi:10.1039/b502142c · Cited by 2,317
Ultraviolet–visible absorption spectra of the colloidal metallic elements
Creighton, J. A., & Eadon, D. G. (1991) · J. Chem. Soc., Faraday Trans. · doi:10.1039/ft9918703881 · Cited by 1,625
Surface modification, functionalization and bioconjugation of colloidal inorganic nanoparticles
Sperling, R. A., & Parak, W. J. (2010) · Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences · doi:10.1098/rsta.2009.0273 · Cited by 1,601
Cited by
Singh, H., Desimone, M. F., Pandya, S., Jasani, S., George, N., Adnan, M., Aldarhami, A., Bazaid, A. S., & Alderhami, S. A. (2023) · International Journal of Nanomedicine · doi:10.2147/ijn.s419369 · Cited by 554
Kumar, P. P. N. V., Shameem, U., Kollu, P., Kalyani, R. L., & Pammi, S. V. N. (2015) · BioNanoScience · doi:10.1007/s12668-015-0171-z · Cited by 408
Green synthesis of gold nanoparticles by thermophilic filamentous fungi
Molnár, Z., Bódai, V., Szakacs, G., Erdélyi, B., Fogarassy, Z., Sáfrán, G., Varga, T., Kónya, Z., Tóth-Szeles, E., Szűcs, R., et al. (2018) · Scientific Reports · doi:10.1038/s41598-018-22112-3 · Cited by 373
A review on biogenic synthesis of gold nanoparticles, characterization, and its applications
Menon, S., S., R., & S., V. K. (2017) · Resource-Efficient Technologies · doi:10.1016/j.reffit.2017.08.002 · Cited by 295
Nzediegwu, C., Arshad, M., Ulah, A., Naeth, M. A., & Chang, S. X. (2021) · Bioresource Technology · doi:10.1016/j.biortech.2020.124282 · Cited by 154
Metadata
- Authors
- Das, S. K., Dickinson, C., Lafir, F., Brougham, D. F., & Marsili, E.
- Venue
- Green Chemistry
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2012
- Volume
- 14
- Issue
- 5
- Pages
- 1322
- ISSN
- 1463-9262 (ISSN-L)
- 1463-9270
- OpenAlex
- W2166776437
- Cited by
- 408
- References
- 56
- FWCI
- 7.53
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Synthesis, characterization and catalytic activity of gold nanoparticles biosynthesized with Rhizopus oryzae protein extract. https://app.cochat.ai/papers/10.1039/c2gc16676c
- The paper
- Das, S. K., Dickinson, C., Lafir, F., Brougham, D. F., & Marsili, E. (2012). Synthesis, characterization and catalytic activity of gold nanoparticles biosynthesized with Rhizopus oryzae protein extract. Green Chemistry. https://doi.org/10.1039/c2gc16676c
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
