Influence of carboxyl group formation on ammonia adsorption of NiO-templated nanoporous carbon surfaces

Long Yue Meng; Soo Jin Park

doi:10.1016/j.matchemphys.2012.08.031

Influence of carboxyl group formation on ammonia adsorption of NiO-templated nanoporous carbon surfaces

Long Yue Meng
, Soo Jin Park

Inha University

Research output: Contribution to journal › Article › peer-review

Abstract

The scope of this work was to control the surface functional groups of nanoporous carbons (NPs) by oxidizing agents (nitric acid and hydrogen peroxide) treatments and to investigate the relation between carboxyl group and ammonia removal efficiency. The NPs were directly prepared from a cation exchange resin by the carbonization of a mixture with Ni acetate at 900 °C. N ₂/-196 °C adsorption, Boehm's titrations, and X-ray photoelectron spectroscopy (XPS) analyzes were employed to confirm the physicochemical properties of NPs. The ammonia removal efficiency was confirmed by temperature programmed desorption (TPD) technique. In the result, the oxygen content of NPs increased after various treatments and the highest content of carboxyl group formation appeared at a 2:3 volume ratio of HNO ₃/H ₂O ₂. It was also found that the oxidation treatment led to an increase in ammonia removal efficiency of NPs, mainly due to an increase of acid oxygen functional groups (such as carboxyl) on NPs surfaces.

Original language	English
Pages (from-to)	85-90
Number of pages	6
Journal	Materials Chemistry and Physics
Volume	137
Issue number	1
DOIs	https://doi.org/10.1016/j.matchemphys.2012.08.031
Publication status	Published - 15 Nov 2012
Externally published	Yes

Keywords

Adsorption
Microstructure
Oxidation
Surface properties

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10.1016/j.matchemphys.2012.08.031

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title = "Influence of carboxyl group formation on ammonia adsorption of NiO-templated nanoporous carbon surfaces",

abstract = "The scope of this work was to control the surface functional groups of nanoporous carbons (NPs) by oxidizing agents (nitric acid and hydrogen peroxide) treatments and to investigate the relation between carboxyl group and ammonia removal efficiency. The NPs were directly prepared from a cation exchange resin by the carbonization of a mixture with Ni acetate at 900 °C. N 2/-196 °C adsorption, Boehm's titrations, and X-ray photoelectron spectroscopy (XPS) analyzes were employed to confirm the physicochemical properties of NPs. The ammonia removal efficiency was confirmed by temperature programmed desorption (TPD) technique. In the result, the oxygen content of NPs increased after various treatments and the highest content of carboxyl group formation appeared at a 2:3 volume ratio of HNO 3/H 2O 2. It was also found that the oxidation treatment led to an increase in ammonia removal efficiency of NPs, mainly due to an increase of acid oxygen functional groups (such as carboxyl) on NPs surfaces.",

keywords = "Adsorption, Microstructure, Oxidation, Surface properties",

author = "Meng, \{Long Yue\} and Park, \{Soo Jin\}",

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doi = "10.1016/j.matchemphys.2012.08.031",

language = "English",

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journal = "Materials Chemistry and Physics",

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T1 - Influence of carboxyl group formation on ammonia adsorption of NiO-templated nanoporous carbon surfaces

AU - Meng, Long Yue

AU - Park, Soo Jin

PY - 2012/11/15

Y1 - 2012/11/15

N2 - The scope of this work was to control the surface functional groups of nanoporous carbons (NPs) by oxidizing agents (nitric acid and hydrogen peroxide) treatments and to investigate the relation between carboxyl group and ammonia removal efficiency. The NPs were directly prepared from a cation exchange resin by the carbonization of a mixture with Ni acetate at 900 °C. N 2/-196 °C adsorption, Boehm's titrations, and X-ray photoelectron spectroscopy (XPS) analyzes were employed to confirm the physicochemical properties of NPs. The ammonia removal efficiency was confirmed by temperature programmed desorption (TPD) technique. In the result, the oxygen content of NPs increased after various treatments and the highest content of carboxyl group formation appeared at a 2:3 volume ratio of HNO 3/H 2O 2. It was also found that the oxidation treatment led to an increase in ammonia removal efficiency of NPs, mainly due to an increase of acid oxygen functional groups (such as carboxyl) on NPs surfaces.

AB - The scope of this work was to control the surface functional groups of nanoporous carbons (NPs) by oxidizing agents (nitric acid and hydrogen peroxide) treatments and to investigate the relation between carboxyl group and ammonia removal efficiency. The NPs were directly prepared from a cation exchange resin by the carbonization of a mixture with Ni acetate at 900 °C. N 2/-196 °C adsorption, Boehm's titrations, and X-ray photoelectron spectroscopy (XPS) analyzes were employed to confirm the physicochemical properties of NPs. The ammonia removal efficiency was confirmed by temperature programmed desorption (TPD) technique. In the result, the oxygen content of NPs increased after various treatments and the highest content of carboxyl group formation appeared at a 2:3 volume ratio of HNO 3/H 2O 2. It was also found that the oxidation treatment led to an increase in ammonia removal efficiency of NPs, mainly due to an increase of acid oxygen functional groups (such as carboxyl) on NPs surfaces.

KW - Adsorption

KW - Microstructure

KW - Oxidation

KW - Surface properties

UR - https://www.scopus.com/pages/publications/84868219353

U2 - 10.1016/j.matchemphys.2012.08.031

DO - 10.1016/j.matchemphys.2012.08.031

M3 - Article

AN - SCOPUS:84868219353

SN - 0254-0584

VL - 137

SP - 85

EP - 90

JO - Materials Chemistry and Physics

JF - Materials Chemistry and Physics

IS - 1

ER -

Influence of carboxyl group formation on ammonia adsorption of NiO-templated nanoporous carbon surfaces

Abstract

Keywords

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