Ultrafast, Highly Sensitive, and Selective Detection of p-Xylene at Room Temperature by Peptide-Hydrogel-Based Composite Material

Nilotpal Singha, Samya Neogi, Bapan Pramanik, Saurav Das, Antara Dasgupta, Ranajit Ghosh, Debapratim Das

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

A peptide/carbon dot (CD) composite xerogel is used as a selective p-xylene VOC (volatile organic compound) sensor. The fiber formation by the peptide allows us to attain a semiconducting property, whereas the presence of the CD amplifies the sensitivity. The selective detection of p-xylene is achieved at a very low concentration (response ≈ 96% for 50 ppm) with an ultrafast response (630 ms) and recovery (540 ms). The sensor is also able to detect p-xylene within crude oil, proving its industrial application. In comparison with the available VOC sensors, this work stands out as a low-cost, sensitive, and selective room-temperature p-xylene sensor with ultrafast sensing ability.

Original languageEnglish
Pages (from-to)2267-2272
Number of pages6
JournalACS Applied Polymer Materials
Volume1
Issue number9
DOIs
StatePublished - 13 Sep 2019
Externally publishedYes

Keywords

  • VOC sensor
  • hydrogel
  • napthalenediimide
  • organic semiconductor
  • p-xylene sensor
  • peptide amphiphile

ASJC Scopus subject areas

  • Polymers and Plastics
  • Process Chemistry and Technology
  • Organic Chemistry

Fingerprint

Dive into the research topics of 'Ultrafast, Highly Sensitive, and Selective Detection of p-Xylene at Room Temperature by Peptide-Hydrogel-Based Composite Material'. Together they form a unique fingerprint.

Cite this