Journal of Materials Science

, Volume 53, Issue 9, pp 6494–6504 | Cite as

Electrostatic self-assembly behaviour of exfoliated Sr2Nb3O10 nanosheets and cobalt porphyrins: exploration of non-noble electro-catalysts towards hydrazine hydrate oxidation

  • Binbin Pan
  • Jiasheng Xu
  • Xiaobo Zhang
  • Jinpeng Li
  • Mengjun Wang
  • Juanjuan Ma
  • Lin Liu
  • Dongen Zhang
  • Zhiwei Tong
Chemical routes to materials


In our research, a convenient exfoliation/restacking route was used to fabricate a sandwich-structured nanocomposite of Sr2Nb3O10/CoTMPyP [5,10,15,20-tetrakis(N-methylpyridinium-4-yl)porphyrinato cobalt] via electrostatic interaction between colloidal dispersion and cobalt porphyrin aqueous solution. The final self-assembled products were characterized by XRD, FTIR, UV–Vis, SEM, TEM, AFM, and ICP. During the exfoliation procedure, the well-dispersed Sr2Nb3O10 colloidal dispersion was obtained with the zeta potential value of − 44.2 mV. Additionally, the existence of unilamellar Sr2Nb3O10 nanosheet was evidenced by AFM, and zeta potential values of the reassembly process with the addition of CoTMPyP aqueous solution into the colloidal dispersion were measured by a Zetasizer Nano apparatus. Above all, the final Sr2Nb3O10/CoTMPyP hybrid film displayed excellent electro-catalytic activities towards hydrazine hydrate oxidation with peak potential at 0.158 V in pH 7.0 PBS indicated by CV measurements; moreover, a detection limit of 3.52 × 10−5 M was obtained in the concentration range of 5 × 10−5–9.9 × 10−4 M at a signal-to-noise ratio of 3.0.



This work was supported by National Natural Science Foundation of China (Grant Nos. 21401062, 21201070, 51202079), Natural Science Fund of Jiangsu Province (BK20161294, BK20140447, BK20141247, SBK201220654), University Science Research Project of Jiangsu Province (13KJB430005, 12KJD150001, 15KJB430004), Key R&D Project of Jiangsu Province (CG1602, CG1622), HHIT Research Project (Z2015011, Z2014004), and 521 High-level Personnel Training Research Project of Lianyungang City (KK15041).

Supplementary material

10853_2018_2033_MOESM1_ESM.docx (2.2 mb)
Supplementary material 1 (DOCX 2216 kb)


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© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.School of Chemical EngineeringHuaihai Institute of TechnologyLianyungangChina
  2. 2.College of Chemistry and Chemical EngineeringLanzhou UniversityLanzhouChina
  3. 3.SORSTJapan Science and Technology Agency (JST)Kawaguchi-shiJapan

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