Preparation of g-C3N4/Ta2O5 Composites with Enhanced Visible-Light Photocatalytic Activity

Vien Vo; Nguyen Van Kim; Nguyen Thi Viet Nga; Nguyen Tien Trung; Le Truong Giang; Pham Van Hanh; Luc Huy Hoang; Sung Jin Kim

doi:10.1007/s11664-015-4280-9

Preparation of g-C₃N₄/Ta₂O₅ Composites with Enhanced Visible-Light Photocatalytic Activity

Vien Vo, Nguyen Van Kim, Nguyen Thi Viet Nga, Nguyen Tien Trung, Le Truong Giang, Pham Van Hanh, Luc Huy Hoang, Sung Jin Kim

Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

g-C₃N₄/Ta₂O₅ composites have been synthesized by a facile route in which mixtures of Ta₂O₅ and urea are heated at various temperatures of 450°C, 500°C, and 550°C. The obtained materials (denoted as CN/TaO-T, where T is the heating temperature) were characterized using x-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, infrared spectroscopy, diffuse-reflectance ultraviolet–visible (UV–Vis) spectroscopy, thermogravimetric analysis, and x-ray photoelectron spectroscopy. The results show that the as-prepared composites are in orthorhombic Ta₂O₅ phase coated by g-C₃N₄. The photocatalytic activity of the composites was evaluated by photodegradation of methylene blue under visible light. Among the three materials, CN/TaO-500 exhibited the highest photocatalytic activity. The improved photocatalytic activity of the g-C₃N₄/Ta₂O₅ composites is attributed to the presence of g-C₃N₄ in the materials.

Original language	English
Pages (from-to)	2334-2340
Number of pages	7
Journal	Journal of Electronic Materials
Volume	45
Issue number	5
DOIs	https://doi.org/10.1007/s11664-015-4280-9
State	Published - 1 May 2016

Keywords

g-CN
methylene blue
photocatalyst
TaO
urea

Access to Document

10.1007/s11664-015-4280-9

Cite this

@article{af6c68a82a204f51bd73ab97757a5471,

title = "Preparation of g-C3N4/Ta2O5 Composites with Enhanced Visible-Light Photocatalytic Activity",

abstract = "g-C3N4/Ta2O5 composites have been synthesized by a facile route in which mixtures of Ta2O5 and urea are heated at various temperatures of 450°C, 500°C, and 550°C. The obtained materials (denoted as CN/TaO-T, where T is the heating temperature) were characterized using x-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, infrared spectroscopy, diffuse-reflectance ultraviolet–visible (UV–Vis) spectroscopy, thermogravimetric analysis, and x-ray photoelectron spectroscopy. The results show that the as-prepared composites are in orthorhombic Ta2O5 phase coated by g-C3N4. The photocatalytic activity of the composites was evaluated by photodegradation of methylene blue under visible light. Among the three materials, CN/TaO-500 exhibited the highest photocatalytic activity. The improved photocatalytic activity of the g-C3N4/Ta2O5 composites is attributed to the presence of g-C3N4 in the materials.",

keywords = "g-CN, methylene blue, photocatalyst, TaO, urea",

author = "Vien Vo and {Van Kim}, Nguyen and Nga, {Nguyen Thi Viet} and Trung, {Nguyen Tien} and Giang, {Le Truong} and {Van Hanh}, Pham and Hoang, {Luc Huy} and Kim, {Sung Jin}",

note = "Funding Information: This work was supported by a National Research Foundation of Korea (NRF) Grant funded by the Korea government (MSIP) (NRF-2015R1A2A2A01004275). Publisher Copyright: {\textcopyright} 2015, The Minerals, Metals & Materials Society.",

year = "2016",

month = may,

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doi = "10.1007/s11664-015-4280-9",

language = "English",

volume = "45",

pages = "2334--2340",

journal = "Journal of Electronic Materials",

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TY - JOUR

T1 - Preparation of g-C3N4/Ta2O5 Composites with Enhanced Visible-Light Photocatalytic Activity

AU - Vo, Vien

AU - Van Kim, Nguyen

AU - Nga, Nguyen Thi Viet

AU - Trung, Nguyen Tien

AU - Giang, Le Truong

AU - Van Hanh, Pham

AU - Hoang, Luc Huy

AU - Kim, Sung Jin

N1 - Funding Information: This work was supported by a National Research Foundation of Korea (NRF) Grant funded by the Korea government (MSIP) (NRF-2015R1A2A2A01004275). Publisher Copyright: © 2015, The Minerals, Metals & Materials Society.

PY - 2016/5/1

Y1 - 2016/5/1

N2 - g-C3N4/Ta2O5 composites have been synthesized by a facile route in which mixtures of Ta2O5 and urea are heated at various temperatures of 450°C, 500°C, and 550°C. The obtained materials (denoted as CN/TaO-T, where T is the heating temperature) were characterized using x-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, infrared spectroscopy, diffuse-reflectance ultraviolet–visible (UV–Vis) spectroscopy, thermogravimetric analysis, and x-ray photoelectron spectroscopy. The results show that the as-prepared composites are in orthorhombic Ta2O5 phase coated by g-C3N4. The photocatalytic activity of the composites was evaluated by photodegradation of methylene blue under visible light. Among the three materials, CN/TaO-500 exhibited the highest photocatalytic activity. The improved photocatalytic activity of the g-C3N4/Ta2O5 composites is attributed to the presence of g-C3N4 in the materials.

AB - g-C3N4/Ta2O5 composites have been synthesized by a facile route in which mixtures of Ta2O5 and urea are heated at various temperatures of 450°C, 500°C, and 550°C. The obtained materials (denoted as CN/TaO-T, where T is the heating temperature) were characterized using x-ray diffraction analysis, scanning electron microscopy, transmission electron microscopy, infrared spectroscopy, diffuse-reflectance ultraviolet–visible (UV–Vis) spectroscopy, thermogravimetric analysis, and x-ray photoelectron spectroscopy. The results show that the as-prepared composites are in orthorhombic Ta2O5 phase coated by g-C3N4. The photocatalytic activity of the composites was evaluated by photodegradation of methylene blue under visible light. Among the three materials, CN/TaO-500 exhibited the highest photocatalytic activity. The improved photocatalytic activity of the g-C3N4/Ta2O5 composites is attributed to the presence of g-C3N4 in the materials.

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