한국재료학회지 (Korean Journal of Materials Research)

  • 제33권7호
  • /
  • Pages.315-322
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  • 2023
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  • 1225-0562(pISSN)
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  • 2287-7258(eISSN)
한국재료학회 (Materials Research Society of Korea)
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용액 플라즈마를 이용한 콜로이드 및 나노 구조 MnO2의 친환경 합성

Green Synthesis of Colloidal and Nanostructured MnO2 by Solution Plasma Process

  • Hyemin Kim (Department of Materials Chemistry, Shinshu University)
  • 투고 : 2023.06.23
  • 심사 : 2023.07.21
  • 발행 : 2023.07.27
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초록

In the present work, we address the new route for the green synthesis of manganese dioxide (MnO2) by an innovative method named the solution plasma process (SPP). The reaction mechanism of both colloidal and nanostructured MnO2 was investigated. Firstly, colloidal MnO2 was synthesized by plasma discharging in KMnO4 aqueous solution without any additives such as reducing agents, acids, or base chemicals. As a function of the discharge time, the purple color solution of MnO4- (oxidation state +7) was changed to the brown color of MnO2 (oxidation state +4) and then light yellow of Mn2+ (oxidation state +2). Based on the UV-vis analysis we found the optimal discharging time for the synthesis of stable colloidal MnO2 and also reaction mechanism was verified by optical emission spectroscopy (OES) analysis. Secondly, MnO2 nanoparticles were synthesized by SPP with a small amount of reducing sugar. The precipitation of brown color was observed after 8 min of plasma discharge and then completely separated into colorless solution and precipitation. It was confirmed layered type of nanoporous birnessite-MnO2 by X-ray powder diffraction (XRD), fourier-transform infrared spectroscopy (FT-IR), and electron microscopes. The most important merits of this approach are environmentally friendly process within a short time compared to the conventional method. Moreover, the morphology and the microstructure could be controllable by discharge conditions for the appropriate potential applications, such as secondary batteries, supercapacitors, adsorbents, and catalysts.

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참고문헌

  1. W. Wei, X. Cui, W. Chen and D. G. Ivey, Chem. Soc. Rev., 40, 1697 (2011).
  2. S. L. Brock, N. Duan, Z. R. Tian, O. Giraldo, H. Zhou and S. L. Suib, Chem. Mater., 10, 2619 (1998).
  3. B. Ding, P. Zheng, P. A. Ma and J. Lin, Adv. Mater., 32, 1905823 (2020).
  4. J. E. Post, Proc. Natl. Acad. Sci. U. S. A., 96, 3447 (1999).
  5. J. Hou, Y. Li, M. Mao, L. Ren and X. Zhao, ACS Appl. Mater. Interfaces, 6, 14981 (2014).
  6. S. Ching, D. J. Petrovay, M. L. Jorgensen and S. L. Suib, Inorg. Chem., 36, 883 (1997).
  7. G. Qiu, H. Huang, S. Dharmarathna, E. Benbow, L. Stafford and S. L. Suib, Chem. Mater., 23, 3892 (2011).
  8. O. Takai, Pure Appl. Chem., 80, 2003 (2008).
  9. O. Takai, J. Photopolym. Sci. Technol., 27, 379 (2014).
  10. C. Chokradjaroen, X. Wang, J. Niu, T. Fan and N. Saito, Mater. Today Adv., 14, 100244 (2022). https://doi.org/10.1016/j.mtadv.2022.100244
  11. H. Kim and N. Saito, Sci. Rep., 8, 4342 (2018).
  12. T. Morishita, T. Ueno, G. Panomsuwan, J. Hieda, A. Yoshida, M. A. Bratescu and N. Saito, Sci. Rep., 6, 36880 (2016).
  13. D. W. Kim, O. L. Li, P. Pootawang and N. Saito, RSC Adv., 4, 16813 (2014).
  14. N. Saito, J. Hieda and O. Takai, Thin Solid Films, 518, 912 (2009).
  15. D. W. Kim, O. L. Li and N. Saito, Phys. Chem. Chem. Phys., 17, 407 (2015).
  16. D. Jaganyi, M. Altaf and I. Wekesa, Appl. Nanosci., 3, 329 (2013).
  17. Y. Luo, Mater. Lett., 61, 1893 (2007).
  18. C. Chokradjaroen, J. Niu, G. Panomsuwan and N. Saito, Int. J. Mol. Sci., 22, 4308 (2021).
  19. M. Huang, Y. Zhang, F. Li, L. Zhang, R. S. Ruoff, Z. Wen and Q. Liu, Sci. Rep., 4, 3878 (2014).
  20. M. Thommes, K. Kaneko, A. V. Neimark, J. P. Olivier, F. Rodriguez-Reinoso, J. Rouquerol and K. S. Sing, Pure Appl. Chem., 87, 1051 (2015).
  21. Y. J. Kim, M. H. Lee, H. J. Kim, G. Lim, Y. S. Choi, N. G. Park and W. I. Lee, Adv. Mater., 21, 3668 (2009).
  22. H. M. Kim, N. Saito and D. W. Kim, ChemistrySelect, 3, 6302 (2018).