Photocatalytic Synthesis of Oxidized Graphite Enabled by Grey TiO2 and Direct Formation of a Visible-Light-Active Titania/Graphene Oxide Nanocomposite

被引：11

作者：

Nasir, Amara ^{[1
,2
]}

Mazare, Anca ^{[2
,3
]}

Zhou, Xin ^{[2
]}

Qin, Shanshan ^{[2
]}

Denisov, Nikita ^{[2
]}

Zdrazil, Lukas ^{[4
,5
]}

Kment, Stepan ^{[4
,6
]}

Zboril, Radek ^{[4
,6
]}

Yasin, Tariq ^{[1
]}

Schmuki, Patrik ^{[2
,4
,7
]}

机构：

[1] Pakistan Inst Engn & Appl Sci PIEAS, Islamabad 45650, Pakistan

[2] Friedrich Alexander Univ Erlangen Nurnberg, Dept Mat Sci WW4 LKO, Martensstr 7, D-91058 Erlangen, Germany

[3] Tohoku Univ, Natl Univ Corp, Adv Inst Mat Res AIMR, Sendai, Miyagi 9808577, Japan

[4] Palacky Univ, Czech Adv Technol & Res Inst, Reg Ctr Adv Technol & Mat, Olomouc 77900, Czech Republic

[5] Palacky Univ, Dept Phys Chem, Fac Sci, Olomouc 71146, Czech Republic

[6] VSB Tech Univ Ostrava, Nanotechnol Ctr, Ctr Energy & Environm Technol CEET, 17 Listopadu 2172-15, Ostrava 70800, Czech Republic

[7] King Abdulaziz Univ, Dept Chem, Fac Sci, POB 80203, Jeddah 21569, Saudi Arabia

来源：

CHEMPHOTOCHEM | 2022年 / 6卷 / 06期

关键词：

grey TiO2; graphite; graphene oxide; UV illumination; methylene-blue degradation; REDUCED GRAPHENE OXIDE; TIO2-GRAPHENE NANOCOMPOSITES; DEGRADATION; COMPOSITE; HYDROGEN; PHOTODEGRADATION; MINERALIZATION; NANOTUBES; POLLUTANT; OXIDATION;

D O I：

10.1002/cptc.202100274

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Herein we report a one-step, low cost, photocatalytic method for the synthesis of graphene oxide (GO) from commercial graphite using grey TiO2 as a photocatalyst. GO formation is achieved by UV-illumination of a slurry of well-dispersed grey TiO2 and commercial graphite. Light-induced valence-band holes from grey TiO2 then lead to an oxidation and exfoliation of graphite, resulting in the formation of visible-light-active GO. An optimal level of graphite oxidation can be established by controlling the UV illumination time. Moreover, the resulting GO-decorated TiO2 is directly active as a visible-light-active photocatalyst that can, for example, be used for pollution degradation.

引用

页数：6

共 71 条

[1] Continuous-Flow Photocatalytic Degradation of Organics Using Modified TiO2 Nanocomposites [J].