The Influence of Carbon Nitride Nanosheets Doping on the Crystalline Formation of MIL-88B(Fe) and the Photocatalytic Activities

Lei, Zhen-Dong1,2; Xue, Yuan-Cheng1; Chen, Wen-Qian1; Li, Lin1; Qiu, Wen-Hui3,4; Zhang, Yong2; Tang, Liang1

2018-08-29

10.1002/smll.201802045

Small   影响因子和分区

1613-6810

1613-6829

In this research, bulk graphitic carbon nitride (g-C3N4) is exfoliated and transferred to the carbon nitride nanosheets (CNNSs), which are then coupled with MIL-88B(Fe) to form the hybrid. From the results of the powder X-ray diffraction, scanning electronic microscopy and thermogravimetric analysis, it is found that the doping of CNNSs on the surface of MIL-88(Fe) could maintain the basic structure of MIL-88B(Fe), and the smaller dimension of CNNSs might influence the crystallization process of metal-organic frameworks (MOFs) compared to bulk g-C3N4. Besides, the effects of the CNNSs incorporation on photocatalysis are also investigated. Through the photoluminescence spectra, electrochemical measurements, and photocatalytic experiments, the hybrid containing 6% CNNSs is certified to possess the highest catalytic activity to degrade methylene blue and reduce Cr(VI) under visible light. The improvement of the photocatalytic performance can be attributed to the matched energy level which favors the formation of the heterojunctions. Besides, it promotes the charge migration such that the contact between MOFs and CNNSs is more intimate, which can be inferred from the electronic microscopy images. Finally, a possible photocatalytic mechanism is put forward by the relative calculation and the employment of the scavengers to trap the active species.

carbon nitride crystallization process heterojunction metal-organic frameworks (MOFs) photocatalysis

SCI ; EI

英语

其他

Guangdong Provincial Key Laboratory of Soil and Groundwater Pollution Control[2017B030301012]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000443012700017

WILEY-V C H VERLAG GMBH

20183605770557

Aromatic compounds ; Catalyst activity ; Chromium compounds ; Crystalline materials ; Heterojunctions ; Nanosheets ; Nitrides ; Organic polymers ; Organometallics ; Photocatalysis ; Photodegradation ; Photoluminescence ; Thermogravimetric analysis

Semiconductor Devices and Integrated Circuits:714.2 ; Light/Optics:741.1 ; Nanotechnology:761 ; Chemistry:801 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Polymers:815.1.1 ; Solid State Physics:933 ; Crystalline Solids:933.1

Web of Science

1.Shanghai Univ, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China
2.Natl Univ Singapore, NUS Grad Sch Integrat Sci & Engn, Singapore 117583, Singapore
3.Southern Univ Sci & Technol, Sch Environm Sci & Engn, Guangdong Prov Key Lab Soil & Groundwater Pollut, Shenzhen 518055, Guangdong, Peoples R China
4.Southern Univ Sci & Technol, State Environm Protect Key Lab Integrated Surface, Sch Environm Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China

Lei, Zhen-Dong,Xue, Yuan-Cheng,Chen, Wen-Qian,et al. The Influence of Carbon Nitride Nanosheets Doping on the Crystalline Formation of MIL-88B(Fe) and the Photocatalytic Activities[J]. Small,2018,14(35).

Lei, Zhen-Dong.,Xue, Yuan-Cheng.,Chen, Wen-Qian.,Li, Lin.,Qiu, Wen-Hui.,...&Tang, Liang.(2018).The Influence of Carbon Nitride Nanosheets Doping on the Crystalline Formation of MIL-88B(Fe) and the Photocatalytic Activities.Small,14(35).

Lei, Zhen-Dong,et al."The Influence of Carbon Nitride Nanosheets Doping on the Crystalline Formation of MIL-88B(Fe) and the Photocatalytic Activities".Small 14.35(2018).