The DOI matches its Crossref record; 32 of the 32 references it cites were found in a registry or an index.
Hidden Second Oxidation Step of Hummers Method
Open accessAbstract
Abstract Hummers method has been used for 50 years to prepare graphene oxide (GO) by oxidizing graphite using Mn2O7. In this work, a new angle on Hummers method is described. The oxidation procedure before the addition of water, which has been respected as the main oxidation step of Hummers method, is named step I oxidation, and the widely ignored further oxidation step after the addition of water is named step II oxidation. The chemical and structural evolutions during step II oxidation was demonstrated for the first time using various techniques including atomic force microscopy (AFM), dynamic light scattering (DLS), X-ray photoelectron spectroscopy (XPS), ultraviolet–visible light (UV–vis) spectroscopy, Fourier-transform infrared spectroscopy (FT-IR), 13C nuclear magnetic resonance (NMR), and zeta-potentiometry. Step II oxidation influences the size of GO, defects within the layers, and functional groups on the surface, which affect the thermal stability of GO and the properties of resultant thermally reduced GO. This work provides new chemical insights into GO and guidelines for preparation of tailor-fitted GO.
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
Preparation of Graphitic Oxide
Hummers, W. S., & Offeman, R. E. (1958) · Journal of the American Chemical Society · doi:10.1021/ja01539a017 · Cited by 29,920
Improved Synthesis of Graphene Oxide
Marcano, D. C., Kosynkin, D. V., Berlin, J. M., Sinitskii, A., Sun, Z., Slesarev, A., Alemany, L. B., Lu, W., & Tour, J. M. (2010) · ACS Nano · doi:10.1021/nn1006368 · Cited by 11,989
The chemistry of graphene oxide
Dreyer, D. R., Park, S., Bielawski, C. W., & Ruoff, R. S. (2010) · Chem. Soc. Rev. · doi:10.1039/b917103g · Cited by 11,653
Single Sheet Functionalized Graphene by Oxidation and Thermal Expansion of Graphite
McAllister, M. J., Li, J.-L., Adamson, D. H., Schniepp, H. C., Abdala, A. A., Liu, J., Herrera-Alonso, M., Milius, D. L., Car, R., Prud'homme, R. K., et al. (2007) · Chemistry of Materials · doi:10.1021/cm0630800 · Cited by 3,569
Compton, O. C., & Nguyen, S. T. (2010) · Small · doi:10.1002/smll.200901934 · Cited by 2,858
New insights into the structure and reduction of graphite oxide
Gao, W., Alemany, L. B., Ci, L., & Ajayan, P. M. (2009) · Nature Chemistry · doi:10.1038/nchem.281 · Cited by 2,583
TiO2-Graphene Nanocomposites. UV-Assisted Photocatalytic Reduction of Graphene Oxide
Williams, G., Seger, B., & Kamat, P. V. (2008) · ACS Nano · doi:10.1021/nn800251f · Cited by 2,517
Evolution of Surface Functional Groups in a Series of Progressively Oxidized Graphite Oxides
Szabó, T., Berkesi, O., Forgó, P., Josepovits, K., Sanakis, Y., Petridis, D., & Dékány, I. (2006) · Chemistry of Materials · doi:10.1021/cm060258+ · Cited by 1,792
Gao, X., Jang, J., & Nagase, S. (2010) · The Journal of Physical Chemistry C · doi:10.1021/jp909284g · Cited by 1,129
Mechanism of Graphene Oxide Formation
Dimiev, A. M., & Tour, J. M. (2014) · ACS Nano · doi:10.1021/nn500606a · Cited by 945
Cited by
Brisebois, P. P., & Siaj, M. (2020) · Journal of Materials Chemistry C · doi:10.1039/c9tc03251g · Cited by 445
Top-down synthesis of graphene: A comprehensive review
Kumar, N., Salehiyan, R., Chauke, V., Joseph Botlhoko, O., Setshedi, K., Scriba, M., Masukume, M., & Sinha Ray, S. (2021) · FlatChem · doi:10.1016/j.flatc.2021.100224 · Cited by 336
Metadata
- Authors
- Kang, J. H., Kim, T., Choi, J., Park, J., Kim, Y. S., Chang, M. S., Jung, H., Park, K. T., Yang, S. J., & Park, C. R.
- Venue
- Chemistry of Materials
- Publisher
- American Chemical Society (ACS)
- Published
- 2016-01-16
- Volume
- 28
- Issue
- 3
- Pages
- 756-764
- ISSN
- 0897-4756 (ISSN-L)
- 1520-5002
- OpenAlex
- W2201102263
- Cited by
- 257
- References
- 32
- FWCI
- 8.79
- Type
- journal article
- Language
- en
- Open access
- hybrid
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: Hidden Second Oxidation Step of Hummers Method. https://app.cochat.ai/papers/10.1021/acs.chemmater.5b03700
- The paper
- Kang, J. H., Kim, T., Choi, J., Park, J., Kim, Y. S., Chang, M. S., Jung, H., Park, K. T., Yang, S. J., & Park, C. R. (2016). Hidden Second Oxidation Step of Hummers Method. Chemistry of Materials. https://doi.org/10.1021/acs.chemmater.5b03700
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.