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Crystalline carbon nitride for photocatalytic phenol degradation: effect of precursor and salt melt amounts

Development of visible-light-active photocatalyst is an important approach to utilize solar energy in the future. The attempts to improve the crystallinity of photocatalyst have been the focus of the research. Recently, the use of potassium chloride-lithium chloride (KCl-LiCl) salt melt has been rep...

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Main Authors: Yuliati, L., Hatta, M. H. M., Lee, S. L., Lintang, H. O.
Format: Conference or Workshop Item
Published: 2020
Subjects:
QD Chemistry
Online Access:http://eprints.utm.my/id/eprint/93919/
https://doi.org/10.1063/5.0005795
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spelling my.utm.939192022-02-28T13:16:17Z http://eprints.utm.my/id/eprint/93919/ Crystalline carbon nitride for photocatalytic phenol degradation: effect of precursor and salt melt amounts Yuliati, L. Hatta, M. H. M. Lee, S. L. Lintang, H. O. QD Chemistry Development of visible-light-active photocatalyst is an important approach to utilize solar energy in the future. The attempts to improve the crystallinity of photocatalyst have been the focus of the research. Recently, the use of potassium chloride-lithium chloride (KCl-LiCl) salt melt has been reported to increase the crystallinity of carbon nitride. In this work, precursor and salt melt amounts were varied to study the properties and the photocatalytic activity of the crystalline carbon nitride for phenol degradation. When the precursor amount was too low (1 g), no product was obtained due to the decomposition of precursor. When it was too high (4 g), the product showed the characters of amorphous CN. Optical properties also showed that when the precursor amount was 3-4 g, the incomplete condensation process occurred and defects were formed due to the excessive washing. The specific surface area also decreased with the increase of the precursor amount from 2 to 4. When the amount of salt melt was too low (2.5 g), the crystalline CN could not be obtained. However, when the amount of salt melt was increased to 7.5 g, impurities could not be avoided. Longer time and multiple washing processes were required in order to remove the impurities, which certainly affected the crystallinity. Photocatalytic activity test showed that the high activity was obtained on the sample prepared using the optimum amount of precursor (2 g) and salt melt (5 g), which would be due to the high crystallinity and large specific surface area. 2020 Conference or Workshop Item PeerReviewed Yuliati, L. and Hatta, M. H. M. and Lee, S. L. and Lintang, H. O. (2020) Crystalline carbon nitride for photocatalytic phenol degradation: effect of precursor and salt melt amounts. In: 14th Joint Conference on Chemistry 2019, JCC 2019, 10 - 11 Sep 2019, Surabaya, Indonesia. https://doi.org/10.1063/5.0005795
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic QD Chemistry
spellingShingle QD Chemistry
Yuliati, L.
Hatta, M. H. M.
Lee, S. L.
Lintang, H. O.
Crystalline carbon nitride for photocatalytic phenol degradation: effect of precursor and salt melt amounts
description Development of visible-light-active photocatalyst is an important approach to utilize solar energy in the future. The attempts to improve the crystallinity of photocatalyst have been the focus of the research. Recently, the use of potassium chloride-lithium chloride (KCl-LiCl) salt melt has been reported to increase the crystallinity of carbon nitride. In this work, precursor and salt melt amounts were varied to study the properties and the photocatalytic activity of the crystalline carbon nitride for phenol degradation. When the precursor amount was too low (1 g), no product was obtained due to the decomposition of precursor. When it was too high (4 g), the product showed the characters of amorphous CN. Optical properties also showed that when the precursor amount was 3-4 g, the incomplete condensation process occurred and defects were formed due to the excessive washing. The specific surface area also decreased with the increase of the precursor amount from 2 to 4. When the amount of salt melt was too low (2.5 g), the crystalline CN could not be obtained. However, when the amount of salt melt was increased to 7.5 g, impurities could not be avoided. Longer time and multiple washing processes were required in order to remove the impurities, which certainly affected the crystallinity. Photocatalytic activity test showed that the high activity was obtained on the sample prepared using the optimum amount of precursor (2 g) and salt melt (5 g), which would be due to the high crystallinity and large specific surface area.
format Conference or Workshop Item
author Yuliati, L.
Hatta, M. H. M.
Lee, S. L.
Lintang, H. O.
author_facet Yuliati, L.
Hatta, M. H. M.
Lee, S. L.
Lintang, H. O.
author_sort Yuliati, L.
title Crystalline carbon nitride for photocatalytic phenol degradation: effect of precursor and salt melt amounts
title_short Crystalline carbon nitride for photocatalytic phenol degradation: effect of precursor and salt melt amounts
title_full Crystalline carbon nitride for photocatalytic phenol degradation: effect of precursor and salt melt amounts
title_fullStr Crystalline carbon nitride for photocatalytic phenol degradation: effect of precursor and salt melt amounts
title_full_unstemmed Crystalline carbon nitride for photocatalytic phenol degradation: effect of precursor and salt melt amounts
title_sort crystalline carbon nitride for photocatalytic phenol degradation: effect of precursor and salt melt amounts
publishDate 2020
url http://eprints.utm.my/id/eprint/93919/
https://doi.org/10.1063/5.0005795
_version_ 1726791454173429760
score 13.211869

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