Moderate NaNO 2 etching enables easy crystallinity optimization of g-C 3 N 4 with superior photoreduction performance

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Standard

Moderate NaNO 2 etching enables easy crystallinity optimization of g-C 3 N 4 with superior photoreduction performance. / Cui, Lifeng; Fang, Zirou; Liu, Yanfei; Chen, Mengya; Yin, Chaochuang; Wang, Junjie; Wang, Zegao; Dong, Mingdong; Kang, Shifei; Liu, Ping.

In: Inorganic Chemistry Frontiers, Vol. 6, No. 5, 01.05.2019, p. 1304-1311.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Cui, L, Fang, Z, Liu, Y, Chen, M, Yin, C, Wang, J, Wang, Z, Dong, M, Kang, S & Liu, P 2019, 'Moderate NaNO 2 etching enables easy crystallinity optimization of g-C 3 N 4 with superior photoreduction performance', Inorganic Chemistry Frontiers, vol. 6, no. 5, pp. 1304-1311. https://doi.org/10.1039/c9qi00113a

APA

Cui, L., Fang, Z., Liu, Y., Chen, M., Yin, C., Wang, J., Wang, Z., Dong, M., Kang, S., & Liu, P. (2019). Moderate NaNO 2 etching enables easy crystallinity optimization of g-C 3 N 4 with superior photoreduction performance. Inorganic Chemistry Frontiers, 6(5), 1304-1311. https://doi.org/10.1039/c9qi00113a

CBE

Cui L, Fang Z, Liu Y, Chen M, Yin C, Wang J, Wang Z, Dong M, Kang S, Liu P. 2019. Moderate NaNO 2 etching enables easy crystallinity optimization of g-C 3 N 4 with superior photoreduction performance. Inorganic Chemistry Frontiers. 6(5):1304-1311. https://doi.org/10.1039/c9qi00113a

MLA

Vancouver

Cui L, Fang Z, Liu Y, Chen M, Yin C, Wang J et al. Moderate NaNO 2 etching enables easy crystallinity optimization of g-C 3 N 4 with superior photoreduction performance. Inorganic Chemistry Frontiers. 2019 May 1;6(5):1304-1311. https://doi.org/10.1039/c9qi00113a

Author

Cui, Lifeng ; Fang, Zirou ; Liu, Yanfei ; Chen, Mengya ; Yin, Chaochuang ; Wang, Junjie ; Wang, Zegao ; Dong, Mingdong ; Kang, Shifei ; Liu, Ping. / Moderate NaNO 2 etching enables easy crystallinity optimization of g-C 3 N 4 with superior photoreduction performance. In: Inorganic Chemistry Frontiers. 2019 ; Vol. 6, No. 5. pp. 1304-1311.

Bibtex

@article{7d73f3aed2774eb6bfef1034edccd5bc,
title = "Moderate NaNO 2 etching enables easy crystallinity optimization of g-C 3 N 4 with superior photoreduction performance",
abstract = " As a promising visible-light-responsive catalyst, graphitic carbon nitride (g-C 3 N 4 ) has been widely used in environmental and energy applications owing to its unique semiconducting optoelectronic properties. However, the photocatalytic performance of bulk g-C 3 N 4 synthesized using N-containing precursors via a conventional thermal polycondensation process is generally limited by low crystallinity caused by incomplete polymerization. In addition to forced polymerization under high-pressure conditions, removing the unpolymerized and inactive part of bulk g-C 3 N 4 through controllable etching is another practical way to optimize its crystallinity. Therefore, we developed an economical and general method to fabricate g-C 3 N 4 with high crystallinity and excellent photocatalytic properties, in which cheap sodium nitrite aqueous solution is utilized as a moderate etching agent. The compositions and physiochemical properties of the products were comprehensively investigated by X-ray diffraction, Fourier-transform infrared spectroscopy, ultraviolet visible diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, N 2 adsorption-desorption, and electrochemical impedance spectroscopy measurements. In addition, ToF-SIMS (time-of-flight secondary ion mass spectrometry), a new surface analysis technology, was also used to determine the surface and structural characteristics of all samples. The obtained g-C 3 N 4 shows ideal high-crystallinity features and excellent charge transfer ability, leading to significantly improved Cr(vi) reduction activity under visible light. Moreover, there is only a low content of nitrite residue (63.3 mg g -1 ) in the final g-C 3 N 4 product, indicating that the method employing NaNO 2 , which is widely used in the food industry, is safe and waste-free. Therefore, the new controllable NaNO 2 etching method is cleaner and more efficient than commonly-used corrosion approaches based on strong acids or strong oxidants, and thus affords a new strategy in the regulation and structural design of various catalysts. ",
author = "Lifeng Cui and Zirou Fang and Yanfei Liu and Mengya Chen and Chaochuang Yin and Junjie Wang and Zegao Wang and Mingdong Dong and Shifei Kang and Ping Liu",
year = "2019",
month = may,
day = "1",
doi = "10.1039/c9qi00113a",
language = "English",
volume = "6",
pages = "1304--1311",
journal = "Inorganic Chemistry Frontiers",
issn = "2052-1553",
publisher = "Royal Society of Chemistry",
number = "5",

}

RIS

TY - JOUR

T1 - Moderate NaNO 2 etching enables easy crystallinity optimization of g-C 3 N 4 with superior photoreduction performance

AU - Cui, Lifeng

AU - Fang, Zirou

AU - Liu, Yanfei

AU - Chen, Mengya

AU - Yin, Chaochuang

AU - Wang, Junjie

AU - Wang, Zegao

AU - Dong, Mingdong

AU - Kang, Shifei

AU - Liu, Ping

PY - 2019/5/1

Y1 - 2019/5/1

N2 - As a promising visible-light-responsive catalyst, graphitic carbon nitride (g-C 3 N 4 ) has been widely used in environmental and energy applications owing to its unique semiconducting optoelectronic properties. However, the photocatalytic performance of bulk g-C 3 N 4 synthesized using N-containing precursors via a conventional thermal polycondensation process is generally limited by low crystallinity caused by incomplete polymerization. In addition to forced polymerization under high-pressure conditions, removing the unpolymerized and inactive part of bulk g-C 3 N 4 through controllable etching is another practical way to optimize its crystallinity. Therefore, we developed an economical and general method to fabricate g-C 3 N 4 with high crystallinity and excellent photocatalytic properties, in which cheap sodium nitrite aqueous solution is utilized as a moderate etching agent. The compositions and physiochemical properties of the products were comprehensively investigated by X-ray diffraction, Fourier-transform infrared spectroscopy, ultraviolet visible diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, N 2 adsorption-desorption, and electrochemical impedance spectroscopy measurements. In addition, ToF-SIMS (time-of-flight secondary ion mass spectrometry), a new surface analysis technology, was also used to determine the surface and structural characteristics of all samples. The obtained g-C 3 N 4 shows ideal high-crystallinity features and excellent charge transfer ability, leading to significantly improved Cr(vi) reduction activity under visible light. Moreover, there is only a low content of nitrite residue (63.3 mg g -1 ) in the final g-C 3 N 4 product, indicating that the method employing NaNO 2 , which is widely used in the food industry, is safe and waste-free. Therefore, the new controllable NaNO 2 etching method is cleaner and more efficient than commonly-used corrosion approaches based on strong acids or strong oxidants, and thus affords a new strategy in the regulation and structural design of various catalysts.

AB - As a promising visible-light-responsive catalyst, graphitic carbon nitride (g-C 3 N 4 ) has been widely used in environmental and energy applications owing to its unique semiconducting optoelectronic properties. However, the photocatalytic performance of bulk g-C 3 N 4 synthesized using N-containing precursors via a conventional thermal polycondensation process is generally limited by low crystallinity caused by incomplete polymerization. In addition to forced polymerization under high-pressure conditions, removing the unpolymerized and inactive part of bulk g-C 3 N 4 through controllable etching is another practical way to optimize its crystallinity. Therefore, we developed an economical and general method to fabricate g-C 3 N 4 with high crystallinity and excellent photocatalytic properties, in which cheap sodium nitrite aqueous solution is utilized as a moderate etching agent. The compositions and physiochemical properties of the products were comprehensively investigated by X-ray diffraction, Fourier-transform infrared spectroscopy, ultraviolet visible diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, N 2 adsorption-desorption, and electrochemical impedance spectroscopy measurements. In addition, ToF-SIMS (time-of-flight secondary ion mass spectrometry), a new surface analysis technology, was also used to determine the surface and structural characteristics of all samples. The obtained g-C 3 N 4 shows ideal high-crystallinity features and excellent charge transfer ability, leading to significantly improved Cr(vi) reduction activity under visible light. Moreover, there is only a low content of nitrite residue (63.3 mg g -1 ) in the final g-C 3 N 4 product, indicating that the method employing NaNO 2 , which is widely used in the food industry, is safe and waste-free. Therefore, the new controllable NaNO 2 etching method is cleaner and more efficient than commonly-used corrosion approaches based on strong acids or strong oxidants, and thus affords a new strategy in the regulation and structural design of various catalysts.

UR - http://www.scopus.com/inward/record.url?scp=85065830174&partnerID=8YFLogxK

U2 - 10.1039/c9qi00113a

DO - 10.1039/c9qi00113a

M3 - Journal article

AN - SCOPUS:85065830174

VL - 6

SP - 1304

EP - 1311

JO - Inorganic Chemistry Frontiers

JF - Inorganic Chemistry Frontiers

SN - 2052-1553

IS - 5

ER -