Characteristics of Chemical Modified Activated Carbons from Bamboo Scaffolding

W. H. Cheung; S. S. Y. Lau; S. Y. Leung; A. W. M. Ip; G. McKay

doi:10.1016/S1004-9541(11)60213-9

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Characteristics of Chemical Modified Activated Carbons from Bamboo Scaffolding

香港科技大学化学与生物分子工程系戈登·麦凯教授退休纪念专刊 | Updated：2026-01-06

- Characteristics of Chemical Modified Activated Carbons from Bamboo Scaffolding
- Chinese Journal of Chemical Engineering Vol. 20, Issue 3, Pages: 515-523(2012)
- Affiliations：
  
  1. Department of Chemical and Biomolecular Engineering, the Hong Kong University of Science and Technology,Hong Kong,China
  2. Scott Wilson Ltd, 38th Floor MetroPlaza Tower 1, Kwai Fong,Hong Kong,China
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(11)60213-9
  CLC：
- Published：2012
- Accepted：
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W. H. Cheung, S. S. Y. Lau, S. Y. Leung, A. W. M. Ip, G. McKay. Characteristics of Chemical Modified Activated Carbons from Bamboo Scaffolding[J]. , 2012, 20(3): 515-523.
DOI：

W. H. Cheung, S. S. Y. Lau, S. Y. Leung, A. W. M. Ip, G. McKay. Characteristics of Chemical Modified Activated Carbons from Bamboo Scaffolding[J]. , 2012, 20(3): 515-523. DOI： 10.1016/S1004-9541(11)60213-9.

摘要

Abstract

In this study

bamboo scaffolding was used to produce activated carbon by carbonization at 600℃ and 900℃ with the purge of nitrogen.The 600℃ char was then further modified chemically by acids and alkalis by reflux for 6 hours.The produced chars were then characterized by nitrogen adsorption isotherm

He pyncometry

elemental analysis and Boehm titration.For most of the chemically modified carbons

the micropore surface areas and volumes have increased compared with the 600℃ char

while the mesopore surface areas and volumes slightly decreased

which may have been due to the dissolving of some of the permeated inorganic matter and oxidizing deposited carbon that blocks the pore openings.For the acidic modified carbons

larger amounts of acidic groups were present in the carbons after being activated by phosphoric acid

phosphoric acid further treated with 2 mol·L

-1

nitric acid

and calcium hydroxide.Although carbon treated with 2 mol·L

-1

and 5 mol·L

-1

nitric acid also produced high acidity

the surface areas and pore volumes were relatively low

due to the destruction of pores by nitric acid oxidation.The reduction of porosity may impair the adsorption capacity.

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