Structural and surface modification of carbon nanotubes for enhanced hydrogen storage density

Rajveer Singh Rajaura; Subodh Srivastava; Preetam Kumar Sharma; Shubhra Mathur; Rupali Shrivastava; S. S. Sharma; Y. K. Vijay

doi:10.1016/j.nanoso.2018.01.005

Structural and surface modification of carbon nanotubes for enhanced hydrogen storage density

Rajveer Singh Rajaura, Subodh Srivastava, Preetam Kumar Sharma, Shubhra Mathur, Rupali Shrivastava, S. S. Sharma, Y. K. Vijay

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Abstract

In this paper, we report the synthesis of functionalized carbon nanotubes (F-CNTs) by acid treatment and their hydrogen storage properties. These F-CNTs have been characterized by XRD, FTIR, Raman spectroscopy and electron microscopy techniques. The results show that the structure and morphology of P-CNTs have been modified after the acid treatment. The hydrogen storage capacity was determined by volumetric measurements at room temperature and experimental results showed that the storage capacities of P-CNTs and F-CNTs were 0.65 wt% and 0.89 wt%, respectively. A notable enhancement in hydrogen storage capacity of F-CNTs was observed which could be attributed to the enhanced oxygen functionalities, opening of end caps and presence of surface defects that offered enhanced surface area for hydrogen adsorption. The key results of present research show that structural, morphological and chemical changes are responsible factors to enhance the hydrogen storage density.

Original language	English
Pages (from-to)	57-65
Number of pages	9
Journal	Nano-Structures and Nano-Objects
Volume	14
DOIs	https://doi.org/10.1016/j.nanoso.2018.01.005
Publication status	Published (in print/issue) - 1 Apr 2018

Funding

Authors are gratefully acknowledge the financial support received from Ministry of new and renewable energy (MNRE Grant No. 103/245/2015 ), New Delhi for providing financial assistance.

Keywords

Adsorption
Chemical functionalization
Functionalized carbon nanotubes
Hydrogen storage
Raman spectroscopy

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10.1016/j.nanoso.2018.01.005

Accepted versionAuthor Accepted Manuscript -, 6.43 MBLicence: CC BY-NC-ND

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title = "Structural and surface modification of carbon nanotubes for enhanced hydrogen storage density",

abstract = "In this paper, we report the synthesis of functionalized carbon nanotubes (F-CNTs) by acid treatment and their hydrogen storage properties. These F-CNTs have been characterized by XRD, FTIR, Raman spectroscopy and electron microscopy techniques. The results show that the structure and morphology of P-CNTs have been modified after the acid treatment. The hydrogen storage capacity was determined by volumetric measurements at room temperature and experimental results showed that the storage capacities of P-CNTs and F-CNTs were 0.65 wt\% and 0.89 wt\%, respectively. A notable enhancement in hydrogen storage capacity of F-CNTs was observed which could be attributed to the enhanced oxygen functionalities, opening of end caps and presence of surface defects that offered enhanced surface area for hydrogen adsorption. The key results of present research show that structural, morphological and chemical changes are responsible factors to enhance the hydrogen storage density.",

keywords = "Adsorption, Chemical functionalization, Functionalized carbon nanotubes, Hydrogen storage, Raman spectroscopy",

author = "Rajaura, \{Rajveer Singh\} and Subodh Srivastava and Sharma, \{Preetam Kumar\} and Shubhra Mathur and Rupali Shrivastava and Sharma, \{S. S.\} and Vijay, \{Y. K.\}",

year = "2018",

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T1 - Structural and surface modification of carbon nanotubes for enhanced hydrogen storage density

AU - Rajaura, Rajveer Singh

AU - Srivastava, Subodh

AU - Sharma, Preetam Kumar

AU - Mathur, Shubhra

AU - Shrivastava, Rupali

AU - Sharma, S. S.

AU - Vijay, Y. K.

PY - 2018/4/1

Y1 - 2018/4/1

N2 - In this paper, we report the synthesis of functionalized carbon nanotubes (F-CNTs) by acid treatment and their hydrogen storage properties. These F-CNTs have been characterized by XRD, FTIR, Raman spectroscopy and electron microscopy techniques. The results show that the structure and morphology of P-CNTs have been modified after the acid treatment. The hydrogen storage capacity was determined by volumetric measurements at room temperature and experimental results showed that the storage capacities of P-CNTs and F-CNTs were 0.65 wt% and 0.89 wt%, respectively. A notable enhancement in hydrogen storage capacity of F-CNTs was observed which could be attributed to the enhanced oxygen functionalities, opening of end caps and presence of surface defects that offered enhanced surface area for hydrogen adsorption. The key results of present research show that structural, morphological and chemical changes are responsible factors to enhance the hydrogen storage density.

AB - In this paper, we report the synthesis of functionalized carbon nanotubes (F-CNTs) by acid treatment and their hydrogen storage properties. These F-CNTs have been characterized by XRD, FTIR, Raman spectroscopy and electron microscopy techniques. The results show that the structure and morphology of P-CNTs have been modified after the acid treatment. The hydrogen storage capacity was determined by volumetric measurements at room temperature and experimental results showed that the storage capacities of P-CNTs and F-CNTs were 0.65 wt% and 0.89 wt%, respectively. A notable enhancement in hydrogen storage capacity of F-CNTs was observed which could be attributed to the enhanced oxygen functionalities, opening of end caps and presence of surface defects that offered enhanced surface area for hydrogen adsorption. The key results of present research show that structural, morphological and chemical changes are responsible factors to enhance the hydrogen storage density.

KW - Adsorption

KW - Chemical functionalization

KW - Functionalized carbon nanotubes

KW - Hydrogen storage

KW - Raman spectroscopy

UR - https://www.scopus.com/pages/publications/85044641117

U2 - 10.1016/j.nanoso.2018.01.005

DO - 10.1016/j.nanoso.2018.01.005

M3 - Article

AN - SCOPUS:85044641117

SN - 2352-507X

VL - 14

SP - 57

EP - 65

JO - Nano-Structures and Nano-Objects

JF - Nano-Structures and Nano-Objects

ER -

Structural and surface modification of carbon nanotubes for enhanced hydrogen storage density

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Keywords

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