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In situ probing of acidic groups on acid-treated carbon nanofibers using 1-aminopyrene

Paper ID Volume ID Publish Year Pages File Format Full-Text
27772 44042 2008 5 PDF Available
Title
In situ probing of acidic groups on acid-treated carbon nanofibers using 1-aminopyrene
Abstract

Acidic functional groups produced on the surface of acid-treated carbon nanofibers (CNFs) were characterized by fluorescence measurements using 1-aminopyrene (1-AP) as an in situ probe molecule. The 1-AP molecules only slightly interacted with the untreated CNF surface, whereas the 1-AP cation-like bands were observed on the HNO3-treated and HNO3/H2SO4 treated CNF surfaces. These results indicate that 1-AP was tightly immobilized by the hydrogen bonding interaction between its amino group and the Brönsted-acidic groups on the CNF surface. A stronger acid treatment (with HNO3/H2SO4 mixture) caused the chemical modification to generate higher amounts of the acidic functional groups on the CNF surface.

Keywords
Carbon nanofibers; 1-Aminopyrene; Adsorption; Fluorescence; Acidic functional groups
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In situ probing of acidic groups on acid-treated carbon nanofibers using 1-aminopyrene
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 193, Issues 2–3, 25 January 2008, Pages 161–165
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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