近日,我校材料科学与工程学院(文物保护科学与技术学院)碳基功能材料创新团队在光催化研究领域取得重要进展,相关研究成果以“Photocatalytic H2O2 Generation Reaction with A Benchmark Rate at Air-Liquid-Solid Joint Interfaces”为题,发表于国际顶级期刊《Advanced Materials》(IF=29.4)上。我校为论文第一通讯单位,硕士研究生严仕伟(现为华南理工大学博士生)为第一作者,陕西科技大学李永副教授、昆士兰科技大学许景三副教授和陕西科技大学宋浩杰教授分别为论文通讯作者。该工作的发表提高了我校在光催化材料领域的国际影响力。
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电荷复合速度快、双电子氧还原反应选择性低、O2扩散速率低等问题阻碍了光催化产H2O2的实际应用。基于此,本工作创新性提出通过界面工程改善光催化过程中的传质障碍,构建一种气-液-固三相界面催化系统,用于从纯水中高效光催化生成H2O2。其中,以三聚氰胺-三聚氰酸前体(MCP)和聚吡咯(PPy)超分子热解合成花状石墨相碳化氮(Cv-PCN)高选择性的将O2还原为H2O2。随后将其负载的多孔材料表面并进行界面润湿性调控构建气-液-固三相界面光催化体系,该体系大大降低了O2的传质阻力,有效地提高了界面O2浓度,从而极大提高了光生电子与空穴的分离效率和 H2O2的反应动力学。本研究为高效光催化生产H2O2催化体系的设计提供了新的思路。
附:团队近三年代表性论文:
[1] Photocatalytic H2O2 Generation Reaction with A Benchmark Rate at Air-Liquid-Solid Joint Interfaces, Advanced Materials, 2023, 2307967.
https://onlinelibrary.wiley.com/doi/10.1002/adma.202307967
[2] Insight into MoS2-MoN Heterostructure to Accelerate Polysulfide Conversion toward High-Energy-Density Lithium-Sulfur Batteries. Advanced Energy Materials, 2021, 11: 2003314.
https://onlinelibrary.wiley.com/doi/10.1002/aenm.202003314
[3] Transition Metal Compounds Family for Li-S Batteries: The DFT-Guide for Suppressing Polysulfides Shuttle. Advanced Functional Materials, 2023, 33, 202300825
https://onlinelibrary.wiley.com/doi/10.1002/adfm.202300825
[4] Superelastic, Highly Conductive, Superhydrophobic, and Powerful Electromagnetic Shielding Hybrid Aerogels Built from Orthogonal Graphene and Boron Nitride Nanoribbons. ACS NANO, 2022, 16:17049
https://pubs.acs.org/doi/10.1021/acsnano.2c07187
[5] Integrated reduced graphene oxide/polypyrrole hybrid aerogels for simultaneous photocatalytic decontamination and water evaporation. Applide Catalysis B-Environmental. 2022, 301, 120820.
https://www.sciencedirect.com/science/article/pii/S0926337321009450?via%3Dihub
[6] Uncovering the origin of full-spectrum visible-light-responsive polypyrrole supramolecular photocatalysts. Applide Catalysis B-Environmental. 2021, 287, 119926.
https://www.sciencedirect.com/science/article/pii/S0926337321000527?via%3Dihub
[7] Immobilizing Polysulfide via Multiple Active Sites in W18O49 for Li-S batteries by Oxygen Vacancy Engineering. Energy Storage Materials, 2021, 43: 422.
https://www.sciencedirect.com/science/article/pii/S2405829721004426?via%3Dihub
[8] Synergistic regulating of dynamic trajectory and lithiophilic nucleation by Heusler alloy for dendrite-free Li deposition. Energy Storage Materials, 2022, 50: 505.
https://www.sciencedirect.com/science/article/pii/S2405829722002951?via%3Dihub
新闻小贴士:
碳基功能材料创新团队现有教授2人和副教授5人,其中3人入选“2023年度全球前2%顶尖科学家榜单”。主要从事新型碳基纳米复合材料的制备与应用研究。近年来,在Advanced Materials, Advanced Energy Materials, Advanced Functional Materials, Applied Catalysis B: Environmental, Energy Storage Materials, ACS Nano, Journal of Materials Chemistry A, Chemical Engineering Journal等国际期刊发表90余篇高水平论文。指导学生先后获“挑战杯”大学生课外学术科技作品竞赛大赛国家级铜奖、“互联网+”大学生创新创业大赛国家级铜奖、光威杯中国复合材料学会大学生科技创新竞赛二等奖等10余项科技创新奖励。团队具有良好的学术生态环境,始终秉承“开拓创新,合作共赢”的理念,并入选2023年陕西省高校青年创新团队。