Universität zu Köln

Wang, Qianqian, Gou, Huiyang, Zhu, Li ORCID: 0000-0001-8588-9379, Huang, Haw-Tyng, Biswas, Arani, Chaloux, Brian L., Epshteyn, Albert, Yesinowski, James P., Liu, Zhenxian, Cody, George, Ma, Mengdong, Zhao, Zhisheng, Fei, Yingwei ORCID: 0000-0001-9955-5353, Prescher, Clemens, Greenberg, Eran, Prakapenka, Vitali B. and Strobel, Timothy A. (2019). Modifying Carbon Nitride through Extreme Phosphorus Substitution. ACS Mater. Lett., 1 (1). S. 14 - 25. WASHINGTON: AMER CHEMICAL SOC. ISSN 2639-4979

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Abstract

A glassy carbon phosphonitride material with bulk chemical composition roughly approximating C3N3P was synthesized through a high-pressure, high-temperature process using a pure P(CN)(3) molecular precursor. The resulting material (hereafter referred to as HPHT-C3N3P) was characterized using a variety of techniques, including X-ray scattering, pair distribution function analysis, P-31, C-13,N-15 magic-angle spinning nuclear magnetic resonance spectroscopies; X-ray photoelectron spectroscopy, and Raman and IR spectroscopies. The measurements indicate that HPHT-C3N3 P lacks long-range structural order with a local structure predominantly composed of a sp(2) , s-triazine-like network in which phosphorus atoms substitute for bridging nitrogen sites found in related C3N4 materials. The HPHT-C3N3P sample exhibits semiconducting properties, with electrical transport dominated by variable-range hopping. The high phosphorus content of HPHT-C3N3P (approaching 13 at. %) is associated with a major decrease in the optical absorption edge (similar to 0.4 eV) and a similar to 10(10)-fold increase in electrical conductivity, as compared to previously-reported P-doped graphitic g-C3N4 (0.6-3.8 at. % P). The HPHT-C3N3P sample is considerably harder than layered g-C3N4 and exhibits superior thermal stability up to , similar to 700 degrees C in air. These results demonstrate a remarkable range of tunable properties possible for C3N4-related materials through elemental substitution and provide valuable information to guide the design of new materials.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Wang, Qianqian UNSPECIFIED UNSPECIFIED UNSPECIFIED Gou, Huiyang UNSPECIFIED UNSPECIFIED UNSPECIFIED Zhu, Li UNSPECIFIED orcid.org/0000-0001-8588-9379 UNSPECIFIED Huang, Haw-Tyng UNSPECIFIED UNSPECIFIED UNSPECIFIED Biswas, Arani UNSPECIFIED UNSPECIFIED UNSPECIFIED Chaloux, Brian L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Epshteyn, Albert UNSPECIFIED UNSPECIFIED UNSPECIFIED Yesinowski, James P. UNSPECIFIED UNSPECIFIED UNSPECIFIED Liu, Zhenxian UNSPECIFIED UNSPECIFIED UNSPECIFIED Cody, George UNSPECIFIED UNSPECIFIED UNSPECIFIED Ma, Mengdong UNSPECIFIED UNSPECIFIED UNSPECIFIED Zhao, Zhisheng UNSPECIFIED UNSPECIFIED UNSPECIFIED Fei, Yingwei UNSPECIFIED orcid.org/0000-0001-9955-5353 UNSPECIFIED Prescher, Clemens UNSPECIFIED UNSPECIFIED UNSPECIFIED Greenberg, Eran UNSPECIFIED UNSPECIFIED UNSPECIFIED Prakapenka, Vitali B. UNSPECIFIED UNSPECIFIED UNSPECIFIED Strobel, Timothy A. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-135713
DOI:	10.1021/acsmaterialslett.9b00010
Journal or Publication Title:	ACS Mater. Lett.
Volume:	1
Number:	1
Page Range:	S. 14 - 25
Date:	2019
Publisher:	AMER CHEMICAL SOC
Place of Publication:	WASHINGTON
ISSN:	2639-4979
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SOLID-STATE NMR; RADIAL-DISTRIBUTION FUNCTION; OPTICAL-PROPERTIES; HIGH-PRESSURE; STABILITY; PHOTOCATALYST; SPECTROSCOPY; EVOLUTION; TRIAZINE; MELAMINE Multiple languages Materials Science, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13571