In situ transmission electron microscopy of light-induced photocatalytic reactions

被引：48

作者：

Cavalca, F. ^{[1
]}

Laursen, A. B. ^{[2
]}

Kardynal, B. E. ^{[3
]}

Dunin-Borkowski, R. E. ^{[1
,4
,5
]}

Dahl, S. ^{[2
]}

Wagner, J. B. ^{[1
]}

Hansen, T. W. ^{[1
]}

机构：

[1] Tech Univ Denmark, Ctr Electron Nanoscopy, DK-2800 Lyngby, Denmark

[2] Tech Univ Denmark, Ctr Individual Nanoparticle Funct, DK-2800 Lyngby, Denmark

[3] Tech Univ Denmark, Dept Photon Engn, DK-2800 Lyngby, Denmark

[4] Forschungszentrum Julich, Ernst Ruska Ctr Microscopy & Spect Electrons ER C, D-52425 Julich, Germany

[5] Forschungszentrum Julich, PGI, D-52425 Julich, Germany

来源：

NANOTECHNOLOGY | 2012年 / 23卷 / 07期

关键词：

WATER; NANOPARTICLES; HYDROGEN; OXIDES;

D O I：

10.1088/0957-4484/23/7/075705

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Transmission electron microscopy (TEM) makes it possible to obtain insight into the structure, composition and reactivity of photocatalysts, which are of fundamental interest for sustainable energy research. Such insight can be used for further material optimization. Here, we combine conventional TEM analysis of photocatalysts with environmental TEM (ETEM) and photoactivation using light. Two novel types of TEM specimen holder that enable in situ illumination are developed to study light-induced phenomena in photoactive materials, systems and photocatalysts at the nanoscale under working conditions. The technological development of the holders is described and two representative photo-induced phenomena are studied: the photodegradation of Cu2O and the photodeposition of Pt onto a GaN:ZnO photocatalyst.

引用

页数：6

共 20 条

[1] Gas phase photocatalytic water splitting with Rh2-yCryO3/GaN:ZnO in μ-reactors [J].

Dionigi, Fabio ;

Vesborg, Peter C. K. ;

Pedersen, Thomas ;

Hansen, Ole ;

Dahl, Soren ;

Xiong, Anke ;

Maeda, Kazuhiko ;

Domen, Kazunari ;

Chorkendorff, Ib .

ENERGY & ENVIRONMENTAL SCIENCE, 2011, 4 (08) :2937-2942

[2] REDUCTION OF COPPER OXIDES BY UV-RADIATION AND ATOMIC-HYDROGEN STUDIED BY XPS [J].

FLEISCH, TH ;

MAINS, GJ .

APPLIED SURFACE SCIENCE, 1982, 10 (01) :51-62

[3]

Gai PL, 2003, CHEM INFORM, V34, P161

[4] Solution-phase synthesis of Cu2O nanocubes [J].

Gou, LF ;

Murphy, CJ .

NANO LETTERS, 2003, 3 (02) :231-234

[5] Aberration corrected and monochromated environmental transmission electron microscopy: challenges and prospects for materials science [J].

Hansen, T. W. ;

Wagner, J. B. ;

Dunin-Borkowski, R. E. .

MATERIALS SCIENCE AND TECHNOLOGY, 2010, 26 (11) :1338-1344

[6] Cu2O as a photocatalyst for overall water splitting under visible light irradiation [J].

Hara, M ;

Kondo, T ;

Komoda, M ;

Ikeda, S ;

Shinohara, K ;

Tanaka, A ;

Kondo, JN ;

Domen, K .

CHEMICAL COMMUNICATIONS, 1998, (03) :357-358

[7] Heterogeneous photocatalysis: State of the art and present applications [J].

Herrmann, JM .

TOPICS IN CATALYSIS, 2005, 34 (1-4) :49-65

[8] Aspects of the Water Splitting Mechanism on (Ga1-xZnx)(N1-xOx) Photocatalyst Modified with Rh2-yCryO3 Cocatalyst [J].

Hisatomi, Takashi ;

Maeda, Kazuhiko ;

Takanabe, Kazuhiro ;

Kubota, Jun ;

Domen, Kazunari .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (51) :21458-21466

[9] STUDY OF THE L23 EDGES IN THE 3D TRANSITION-METALS AND THEIR OXIDES BY ELECTRON-ENERGY-LOSS SPECTROSCOPY WITH COMPARISONS TO THEORY [J].

LEAPMAN, RD ;

GRUNES, LA ;

FEJES, PL .

PHYSICAL REVIEW B, 1982, 26 (02) :614-635

[10] Photocatalyst releasing hydrogen from water - Enhancing catalytic performance holds promise for hydrogen production by water splitting in sunlight. [J].

Maeda, K ;

Teramura, K ;

Lu, DL ;

Takata, T ;

Saito, N ;

Inoue, Y ;

Domen, K .

NATURE, 2006, 440 (7082) :295-295

← 1 2 →