首页|Synthesis of crystalline g-C3N4 with rock/molten salts for efficient photocatalysis and piezocatalysis

Synthesis of crystalline g-C3N4 with rock/molten salts for efficient photocatalysis and piezocatalysis

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Graphitic carbon nitride(g-C3N4)is emerging as a promising visible-light photocatalyst while the low crystallinity with sluggish charge separation/migration dynamics significantly restricts its practical applications.Currently,synthesizing highly crystalline g-C3N4 with sufficient surface activities still remains challenging.Herein,different from using alkali molten salts which is commonly reported,we propose an approach for synthesis of highly crystalline g-C3N4 with FeCl3/KCl rock/molten mixed salts.The rock salt can serve as the structure-directing template while molten salt provides the required liquid medium for re-condensation.Intriguingly,the synthesized photocatalyst showed further enhanced crystallinity and improved surface area along with high π→π*excitation compared with crystalline C3N4 prepared from conventional molten-salt methods.These catalytically advantageous features lead to its superior photocatalytic and piezocatalytic activities with a high reactivity for overall water splitting that is not commonly reported for C3N4.This work provides an effective strategy for structural optimization of organic semiconductor based materials and may inspire new ideas for the design of advanced photocatalysts.

High crystallinityCarbon nitridePhotocatalysisPiezocatalysisOverall water splitting

Tingting Xu、Jung Hur、Ping Niu、Shulan Wang、Sangwook Lee、Sang-Eun Chun、Li Li

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Department of Chemistry,College of Science,Northeastern University,Shenyang,110819,China

State Key Laboratory of Rolling and Automation,Northeastern University,Shenyang,110819,China

School of Metallurgy,Northeastern University,Shenyang,110819,China

School of Materials Science and Engineering,Kyungpook National University,Daegu,41566,Republic of Korea

School of Industrial Technology Advances,Kyungpook National University,Daegu,41566,Republic of Korea

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国家自然科学基金国家自然科学基金中央高校基本科研业务费专项中央高校基本科研业务费专项中央高校基本科研业务费专项中央高校基本科研业务费专项Applied Basic Research Program of LiaoningYoung Elite Scientist Sponsorship Program by CAST(YESS)National Research Foundation of Korea(NRF)grant funded by the Korean government(Ministry of Science,ICT&Future Planning)National Research Foundation of Korea(NRF)grant funded by the Korean government(Ministry of Science,ICT&Future Planning)

5190204551904059N2002005N2125004N2225038N22250442022JH2/1013002002019-2021QNRCNRF-2020R1F1A1075601NRF-2021R1A4A2001658

2024

10.1016/j.gee.2022.10.004

绿色能源与环境(英文)

绿色能源与环境(英文)

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ISSN：
年,卷(期)：2024.9(5)
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