当前位置：
X-MOL 学术
›
J. Mater. Chem. A
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
In situ g-C3N4 self-sacrificial synthesis of a g-C3N4/LaCO3OH heterostructure with strong interfacial charge transfer and separation for photocatalytic NO removal†
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2017-12-01 00:00:00 , DOI: 10.1039/c7ta09132j Zhenyu Wang 1, 2, 3, 4, 5 , Yu Huang 4, 5, 6, 7, 8 , Long Chen 4, 5, 6, 7, 8 , Meijuan Chen 1, 2, 3, 4 , Junji Cao 1, 2, 3, 4, 5 , Wingkei Ho 4, 9, 10 , Shun Cheng Lee 4, 11, 12, 13
Journal of Materials Chemistry A ( IF 10.7 ) Pub Date : 2017-12-01 00:00:00 , DOI: 10.1039/c7ta09132j Zhenyu Wang 1, 2, 3, 4, 5 , Yu Huang 4, 5, 6, 7, 8 , Long Chen 4, 5, 6, 7, 8 , Meijuan Chen 1, 2, 3, 4 , Junji Cao 1, 2, 3, 4, 5 , Wingkei Ho 4, 9, 10 , Shun Cheng Lee 4, 11, 12, 13
Affiliation
|
Graphitic carbon nitride (g-C3N4) as a metal-free semiconductor photocatalyst has been continually struggling with the high recombination rate of photo-induced charge carriers. Developing a heterostructure is an effective way to suppress the photo-induced e−–h+ pair recombination. In this study, a novel heterostructured g-C3N4/hierarchical reuleaux triangle LaCO3OH nanocomposite was controllably fabricated via a one-pot hydrothermal strategy for the first time rather than through the conventional solid state calcination reaction, relying on the dual-functional roles of g-C3N4. g-C3N4, serving as both the structure directing agent and CO32− source in the reaction system, significantly influences the morphology engineering of LaCO3OH. The time-dependent structural evolutions were discussed in detail. The strong interfacial charge transfer and separation are the dominant factors for activity enhancement of g-C3N4/LaCO3OH towards gaseous nitric oxide (NO) degradation under visible light, as confirmed by experimental characterization and density functional theory (DFT) theoretical calculations. Combined with the identification of reaction intermediates and electron spin resonance (ESR) results, the photocatalytic degradation mechanism of NO over the g-C3N4/LaCO3OH heterojunction was proposed. More importantly, this novel self-sacrificial synthesis strategy was successfully extended to synthesize both g-C3N4/Bi2O2CO3 and g-C3N4/SrCO3 composites, indicating that it can serve as a general method to synthesize g-C3N4/carbonate compounds.
中文翻译：
gC 3 N 4 / LaCO 3 OH异质结构的原位gC 3 N 4自我牺牲合成，具有很强的界面电荷转移和分离作用，可去除光催化性NO †
作为无金属的半导体光催化剂，石墨化的氮化碳（gC 3 N 4）一直在以高的光诱导电荷载流子复合率而奋斗。开发异质结构是抑制光诱导的e -- h +对重组的有效方法。在这项研究中，依靠双功能作用，首次通过单锅水热策略而不是通过常规的固态煅烧反应，可控制地制备了一种新型的异质结构的gC 3 N 4 /多级鲁勒三角LaCO 3 OH纳米复合材料。的gC 3 N 4。GC3 N 4既是结构导向剂又是反应体系中的CO 3 2-来源，对LaCO 3 OH的形貌工程有显着影响。详细讨论了随时间变化的结构演变。强大的界面电荷转移和分离是gC 3 N 4 / LaCO 3活性增强的主要因素实验表征和密度泛函理论（DFT）理论计算证实了OH在可见光下对气态一氧化氮（NO）的降解。结合反应中间体的鉴定和电子自旋共振（ESR）结果，提出了在gC 3 N 4 / LaCO 3 OH异质结上NO对光催化降解的机理。更重要的是，这种新颖的自我牺牲合成策略已成功扩展，可以合成gC 3 N 4 / Bi 2 O 2 CO 3和gC 3 N 4 / SrCO 3这表明它可以作为合成gC 3 N 4 /碳酸盐化合物的通用方法。
更新日期：2017-12-01
中文翻译：
gC 3 N 4 / LaCO 3 OH异质结构的原位gC 3 N 4自我牺牲合成，具有很强的界面电荷转移和分离作用，可去除光催化性NO †
作为无金属的半导体光催化剂，石墨化的氮化碳（gC 3 N 4）一直在以高的光诱导电荷载流子复合率而奋斗。开发异质结构是抑制光诱导的e -- h +对重组的有效方法。在这项研究中，依靠双功能作用，首次通过单锅水热策略而不是通过常规的固态煅烧反应，可控制地制备了一种新型的异质结构的gC 3 N 4 /多级鲁勒三角LaCO 3 OH纳米复合材料。的gC 3 N 4。GC3 N 4既是结构导向剂又是反应体系中的CO 3 2-来源，对LaCO 3 OH的形貌工程有显着影响。详细讨论了随时间变化的结构演变。强大的界面电荷转移和分离是gC 3 N 4 / LaCO 3活性增强的主要因素实验表征和密度泛函理论（DFT）理论计算证实了OH在可见光下对气态一氧化氮（NO）的降解。结合反应中间体的鉴定和电子自旋共振（ESR）结果，提出了在gC 3 N 4 / LaCO 3 OH异质结上NO对光催化降解的机理。更重要的是，这种新颖的自我牺牲合成策略已成功扩展，可以合成gC 3 N 4 / Bi 2 O 2 CO 3和gC 3 N 4 / SrCO 3这表明它可以作为合成gC 3 N 4 /碳酸盐化合物的通用方法。
京公网安备 11010802027423号