Controllable assembly of single/double-thin-shell g-C3N4 vesicles via a shape-selective solid-state templating method for efficient photocatalysis

Lei Luo, Keyan Li, Anfeng Zhang, Hainan Shi, Guanghui Zhang, Jiani Ma, Wen Zhang, Junwang Tang, Chunshan Song, Xinwen Guo

Research output: Contribution to journalArticle

Abstract

Mimicking natural thylakoid vesicles is an effective approach for facilitating photoabsorption and charge separation over photocatalysts. However, bulk materials cannot function well with a short photocarrier transport distance while thin-layers suffer from preparation difficulty due to the ease of structural collapse. Herein, inspired by natural thylakoid vesicles, a solid-state thermolysis templating method using the shape selectivity of MCM-41 and melamine precursor has been developed to assemble stable thin-shell g-C3N4 vesicles and their heterojunctions. The relatively narrow channel of MCM-41 allows the oligomerization of melamine inside the pore but inhibits its further polymerization into melon. With increasing temperature, oligomers begin to form and migrate out of the channel and polymerize selectively on the open-up outer surface into the vesicle structure. Single- and double-thin-shell g-C3N4 vesicles as well as their heterojunctions have successfully been fabricated through templating by MCM-41, hollow MCM-41 and MOx/MCM-41 (M = Ag, Fe, Co, Cu, and Ni) as evidenced by TEM. A uniform shell thickness can be precisely controlled from 17.5 to 42.1 nm. The tailored g-C3N4 vesicles exhibit enhanced photocatalytic activity and stability for the hydrogen evolution reaction which results from the enhanced photoabsorption and suppressed charge recombination. This new method is versatile for encapsulation of the secondary component including metals and metal oxides in g-C3N4.

Original languageEnglish (US)
Pages (from-to)17815-17822
Number of pages8
JournalJournal of Materials Chemistry A
Volume7
Issue number30
DOIs
StatePublished - Jan 1 2019

Fingerprint

Photocatalysis
Multicarrier modulation
Melamine
Heterojunctions
Metals
Oligomerization
Thermolysis
Photocatalysts
Encapsulation
Oligomers
Oxides
Hydrogen
Polymerization
MCM-41
Transmission electron microscopy
Temperature
melamine

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Luo, Lei ; Li, Keyan ; Zhang, Anfeng ; Shi, Hainan ; Zhang, Guanghui ; Ma, Jiani ; Zhang, Wen ; Tang, Junwang ; Song, Chunshan ; Guo, Xinwen. / Controllable assembly of single/double-thin-shell g-C3N4 vesicles via a shape-selective solid-state templating method for efficient photocatalysis. In: Journal of Materials Chemistry A. 2019 ; Vol. 7, No. 30. pp. 17815-17822.
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Controllable assembly of single/double-thin-shell g-C3N4 vesicles via a shape-selective solid-state templating method for efficient photocatalysis. / Luo, Lei; Li, Keyan; Zhang, Anfeng; Shi, Hainan; Zhang, Guanghui; Ma, Jiani; Zhang, Wen; Tang, Junwang; Song, Chunshan; Guo, Xinwen.

In: Journal of Materials Chemistry A, Vol. 7, No. 30, 01.01.2019, p. 17815-17822.

Research output: Contribution to journalArticle

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AU - Luo, Lei

AU - Li, Keyan

AU - Zhang, Anfeng

AU - Shi, Hainan

AU - Zhang, Guanghui

AU - Ma, Jiani

AU - Zhang, Wen

AU - Tang, Junwang

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AU - Guo, Xinwen

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