Preparation of nitrogen-doped Cu-biochar and its application into catalytic reduction of p-nitrophenol
- Authors
- Cho, Dong-Wan; Kim, Sohyun; Tsang, Yiu Fai; Song, Hocheol
- Issue Date
- Aug-2019
- Publisher
- SPRINGER
- Keywords
- Glucose; Biochar; Copper; p-nitrophenol; Borohydride; Catalytic reduction
- Citation
- ENVIRONMENTAL GEOCHEMISTRY AND HEALTH, v.41, no.SI 4, pp.1729 - 1737
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
- Volume
- 41
- Number
- SI 4
- Start Page
- 1729
- End Page
- 1737
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/189875
- DOI
- 10.1007/s10653-017-9966-x
- ISSN
- 0269-4042
- Abstract
- Nitrogen-doped copper-biochar (N-Cu-biochar) was synthesized via pyrolysis of glucose in the presence of copper and melamine and used as a catalyst in the reduction of p-nitrophenol by NaBH4. N-Cu-biochar was characterized by field emission scanning electron microscopy/energy-dispersive spectroscopy, Raman spectroscopy, X-ray Diffraction, and Brunauer-Emmett-Teller surface analyzer. The catalytic performance of N-Cu-biochar was evaluated under varying conditions of NaBH4 concentration, biochar dosage, and initial p-nitrophenol concentration. N-Cu-biochar was composed of similar to 83% C, similar to 9% O, and similar to 8% Cu, with Cu/Cu2O phases evenly dispersed on graphitic carbon aggregates possessing both macro- and meso-pores. N-Cu-biochar showed superior catalytic ability in mediating p-nitrophenol reduction as compared to Cu-biochar and N-doped biochar, achieving complete reduction of 0.35 mM p-nitrophenol within 30 min at a dose of 0.25 g L-1. Reduction of p-nitrophenol catalyzed by N-Cu-biochar followed pseudo-first-order kinetics, and the reaction rate was dependent upon NaBH4 concentration. The overall results indicate that biochar can be a suitable candidate as a support for catalyst synthesis, and N-doped Cu-biochar can be a promising catalyst for the reduction of p-nitrophenol.
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