N doped cobalt-carbon composite for reduction of p-nitrophenol and pendimethaline

Zubair HASAN, Yong-Sik OK, Jörg RINKLEBE, Yiu Fai TSANG, Dong-Wan CHO, Hocheol SONG

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A novel and magnetically separable N doped-cobalt carbon composite (Co-NC) was facilely synthesized via thermal treatment of Co₃O₄₋melamine mixture in atmospheric condition. The physicochemical properties of the composite were characterized with X-ray diffractometer, Raman spectroscopy, SQUID magnetometer, scanning electron microscope, and X-ray photoelectron spectroscopy. The catalytic ability of the composite was evaluated in reduction of p-nitrophenol and pendimethalin using NaBH₄ as a reductant. The composite showed a good catalytic performance to completely reduce 20 mg L⁻¹ of p-nitrophenol within 7.5 min, and 44 mg L⁻¹ of pendimethaline within 20 min at a dose of 0.27 mg mL⁻¹ and 0.32 mg mL⁻¹, respectively. The composite also displayed a robust reusability with a small loss of catalytic activity in completion of four repetitive p-nitrophenol reduction cycles, demonstrating its potential utility as an alternative to noble-metal catalysts. Copyright © 2017 Elsevier B.V.
Original languageEnglish
Pages (from-to)118-124
JournalJournal of Alloys and Compounds
Early online dateJan 2017
Publication statusPublished - 2017


Hasan, Z., Ok, Y. S., Rinklebe, J., Tsang, Y. F., Cho, D.-W., & Song, H. (2017). N doped cobalt-carbon composite for reduction of p-nitrophenol and pendimethaline. Journal of Alloys and Compounds, 703, 118-124. doi: 10.1016/j.jallcom.2017.01.326


  • N-doped carbon composites
  • Non-noble metal catalyst
  • Reduction
  • p-nitrophenol
  • Pendimethalin


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