Light-Induced Reduction of Cuprous Oxide in an Environmental Transmission Electron Microscope

被引：20

作者：

Cavalca, Filippo ^{[1
]}

Laursen, Anders B. ^{[2
]}

Wagner, Jakob B. ^{[1
]}

Damsgaard, Christian D. ^{[1
]}

Chorkendorff, Ib ^{[2
]}

Hansen, Thomas 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

来源：

CHEMCATCHEM | 2013年 / 5卷 / 09期

关键词：

copper; cuprates; electron microscopy; photochemistry; reduction; ENERGY-LOSS SPECTROSCOPY; SOLAR-ENERGY; WATER; CU2O; EELS;

D O I：

10.1002/cctc.201200887

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：

Photocatalysts for solar fuel production are subject to intensive investigation as they constitute one viable route for solar energy harvesting. Cuprous oxide (Cu2O) is a working photocatalyst for hydrogen evolution but it photocorrodes upon light illumination in an aqueous environment. Environmental transmission electron microscopy (ETEM) makes it possible to obtain insight into the local structure, composition and reactivity of catalysts in their working environment, which is of fundamental interest for sustainable energy research and is essential for further material optimization. Herein, photoreduction of Cu2O is studied insitu using a dedicated TEM specimen holder for light illumination.

引用

页码：2667 / 2672

页数：6

共 30 条

[21]

Miller B., 2011, BIOL BLOOD MARROW TR, V17, P472

[22] PHOTOCATALYTIC HYDROGEN PRODUCTION - SOLAR-ENERGY CONVERSION ALTERNATIVE [J].

PALEOCRASSAS, SN .

SOLAR ENERGY, 1974, 16 (01) :45-51

[23] Ultrathin films on copper(I) oxide water splitting photocathodes: a study on performance and stability [J].

Paracchino, Adriana ;

Mathews, Nripan ;

Hisatomi, Takashi ;

Stefik, Morgan ;

Tilley, S. David ;

Graetzel, Michael .

ENERGY & ENVIRONMENTAL SCIENCE, 2012, 5 (09) :8673-8681

[24] Evaluation of calculated and measured electron inelastic mean free paths near solid surfaces [J].

Powell, CJ ;

Jablonski, A .

JOURNAL OF PHYSICAL AND CHEMICAL REFERENCE DATA, 1999, 28 (01) :19-62

[25]

SCHOPPEL HR, 1971, BERICH BUNSEN GESELL, V75, P1237

[26]

Sharma R, 2005, HANDBOOK OF MICROSCOPY FOR NANOTECHNOLOGY, P531, DOI 10.1007/1-4020-8006-9_17

[27] Development of a multifunctional TEM specimen holder equipped with a piezodriving probe and a laser irradiation port [J].

Shindo, Daisuke ;

Takahashi, Kodai ;

Murakami, Yasukazu ;

Yamazaki, Kazuya ;

Deguchi, Syunji ;

Suga, Hiroaki ;

Kondo, Yukihito .

JOURNAL OF ELECTRON MICROSCOPY, 2009, 58 (04) :245-249

[28] THE INFLUENCE OF PLURAL SCATTERING ON EELS ELEMENTAL ANALYSIS [J].

SU, DS ;

WANG, HF ;

ZEITLER, E .

ULTRAMICROSCOPY, 1995, 59 (1-4) :181-190

[29] In situ electron energy loss spectroscopy studies of gas-dependent metal-support interactions in Cu/ZnO catalysts [J].

Wagner, JB ;

Hansen, PL ;

Molenbroek, AM ;

Topsoe, H ;

Clausen, BS ;

Helveg, S .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (31) :7753-7758

[30] The absolute energy positions of conduction and valence bands of selected semiconducting minerals [J].

Xu, Y ;

Schoonen, MAA .

AMERICAN MINERALOGIST, 2000, 85 (3-4) :543-556

← 1 2 3 →