Mesoporous ZnO microcube derived from a metal-organic framework as photocatalyst for the degradation of organic dyes

Journal Article · Fri Dec 15 00:00:00 EST 2017 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/J.JSSC.2017.09.002· OSTI ID:22742074

Ban, Jin-jin; Xu, Guan-cheng; Zhang, Li; Lin, He; Sun, Zhi-peng; Lv, Yan; Jia, Dian-zeng

A cube-like porous ZnO architecture was synthesized by direct two-step thermolysis of a zinc-based metal-organic framework [(CH{sub 3}){sub 2}NH{sub 2}][Zn(HCOO){sub 3}]. The obtained ZnO microcube was characterized by powder X-ray diffraction, scanning electron microscopy, transmission electron microscopy and nitrogen adsorption and desorption isotherms. The mesoporous ZnO microcube was comprised by many nanoparticles, and inherited the cube shape from [(CH{sub 3}){sub 2}NH{sub 2}][Zn(HCOO){sub 3}] precursor. With large surface area and mesoporous structure, the ZnO microcube exhibits excellent photocatalytic activities against methyl orange (MO) and rhodamine B (RhB) under UV irradiation, and the degradation rates reached 99.7% and 98.1% within 120 min, respectively. - Graphical abstract: Mesoporous ZnO microcube was synthesized via two-step thermolysis of metal-organic framework [(CH{sub 3}){sub 2}NH{sub 2}][Zn(HCOO){sub 3}], and exhibit excellent photocatalytic activity towards MO and RhB. Display Omitted - Highlights: • Cubic MOF [(CH{sub 3}){sub 2}NH{sub 2}][Zn(HCOO){sub 3}] was prepared by solution-precipitation method. • Mesoporous ZnO microcube was obtained by a two-step calcination of MOF precursor. • ZnO microcube shows photocatalytic activity to MO and RhB under UV irradiation. • The h{sup +} and ∙O{sub 2}{sup -} are main active species during the photodegradation process.

• OSTI ID: 22742074
• Journal Information: Journal of Solid State Chemistry, Vol. 256; Other Information: Copyright (c) 2017 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ADSORPTION ISOTHERMS
CATALYSTS
HYDROGEN IONS 1 PLUS
METHYL ORANGE
NANOSTRUCTURES
ORGANOMETALLIC COMPOUNDS
PHOTOCATALYSIS
POROUS MATERIALS
SCANNING ELECTRON MICROSCOPY
SURFACE AREA
SYNTHESIS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
ZINC OXIDES