Facile mechanochemical modification of g-C3N4 for selective photo-oxidation of benzyl alcohol

被引：47

作者：

Cerdan, Kenneth ^{[1
]}

Ouyang, Weiyi ^{[1
]}

Colmenares, Juan C. ^{[2
]}

Munoz-Batista, Mario J. ^{[1
]}

Luque, Rafael ^{[1
,3
]}

Balu, Alina M. ^{[1
]}

机构：

[1] Univ Cordoba, Dept Quim Organ, Edificio Marie Curie C-3,Ctra Nnal 4-A,Km 396, E-14014 Cordoba, Spain

[2] Polish Acad Sci, Inst Phys Chem, Kasprzaka 44-52, PL-01224 Warsaw, Poland

[3] Peoples Friendship Univ Russia, RUDN Univ, 6 Miklukho Maklaya Str, Moscow 117198, Russia

来源：

CHEMICAL ENGINEERING SCIENCE | 2019年 / 194卷

关键词：

Photo-catalysis; Graphitic carbon nitride; Mechanochemical; Benzyl alcohol; ZnO; Fe2O3; PHOTOCATALYTIC ACTIVITY; COMPOSITE; OXIDATION; PERFORMANCE; TOLUENE; PHOTODEGRADATION; GRAPHENE; TIO2; ZNO; UV;

D O I：

10.1016/j.ces.2018.04.001

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Graphitic carbon nitride (CN) enriched with ZnO or Fe2O3 were synthesized using a simple one-pot mechanochemical method. By using this method, composite samples were synthetized without the production of any potentially hazardous waste. Synthesized materials were used as catalysts during selective photo-oxidation of benzyl alcohol. Both composite materials displayed an enhancement of activity and benzaldehyde selectivity with respect to the pure CN. The most active catalyst was Fe2O3/g-C3N4(Fe/CN). Conversion and benzaldehyde selectivity of this sample were 20 and 70%, respectively. It showed a considerable increase of benzaldehyde selectivity compared to the pure CN and TiO2 P25 commercial reference. A complete structural and electronic characterization using Scanning Electron Microscopy-Energy Dispersive (SEM-EDX), BET measurements, X-ray diffraction (XRD), X-ray Photoelectron (XPS), and UV-visible spectroscopies was carried out. The characterization analysis pointed out the leading role of the crystallinity and surface concentration over the activity and benzaldehyde selectivity of the reaction. (C) 2018 Elsevier Ltd. All rights reserved.

引用

页码：78 / 84

页数：7

共 50 条

[11] High-efficiency conversion of CO2 to fuel over ZnO/g-C3N4 photocatalyst [J].