Biochar as a low-cost, eco-friendly, and electrically conductive material for terahertz applications

Autor:	Soo Bong Choi, Woongkyu Park, Sung Ju Hong, Young-Mi Bahk, Hyun-Tae Kim, Hajung Park
Jazyk:	angličtina
Rok vydání:	2021
Předmět:	Multidisciplinary Materials science business.industry Annealing (metallurgy) Terahertz radiation Science Infrared spectroscopy Physics::Optics Conductivity Article symbols.namesake X-ray photoelectron spectroscopy Sustainability Biochar symbols Optoelectronics Medicine business Spectroscopy Raman spectroscopy Terahertz optics
Zdroj:	Scientific Reports, Vol 11, Iss 1, Pp 1-8 (2021) Scientific Reports
ISSN:	2045-2322
Popis:	We investigate conducting characteristics of biochar derived from the pyrolysis of a paper at terahertz frequencies. Paper is annealed under temperatures ranging from 600 to 1000 °C to modify structural and electrical properties. We experimentally observe that the terahertz conductivity increases above 102 S/m as the annealing temperature increases up to 800 °C. From structural characterization using energy-dispersive X-ray spectroscopy, Fourier-transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy, we confirm that more graphitic biochars are produced in high annealing temperature, in agreement with the improvement of terahertz conductivity. Our results show that biochar can be a highly promising candidate to be used in paper-based devices operating at terahertz frequencies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::085458ec12db2d5efef93851ebfba739 https://doaj.org/article/d0ac30c7c5ce4be889d1c4d26e80e7f3 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.