Synthesis, characterization, and photocatalytic degradation properties of ZnO/ZnFe2O4 magnetic heterostructures

2017 ◽  
Vol 41 (24) ◽  
pp. 15433-15438 ◽  
Author(s):  
Yan Xu ◽  
Shumin Wu ◽  
Xianliang Li ◽  
Yehang Huang ◽  
Zhuopeng Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Metal Organic Framework ◽  
High Photocatalytic Activity ◽  
Mixed Metal ◽  
Magnetic Heterostructures ◽  
Metal Organic ◽  
One Step ◽  
The One ◽  
Degradation Properties

A nanosheet-constructed ZnO/ZnFe2O4 composite with high photocatalytic activity is obtained via the one-step pyrolysis of a Zn–Fe mixed-metal–organic framework precursor.

scholarly journals Effective Photocatalytic Activity of Mixed Ni/Fe-Base Metal-Organic Framework under a Compact Fluorescent Daylight Lamp

Catalysts ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 487 ◽  
Author(s):  
Vinh Nguyen ◽  
Trinh Nguyen ◽  
Long Bach ◽  
Thai Hoang ◽  
Quynh Bui ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Base Metal ◽  
Metal Cluster ◽  
Metal Organic Framework ◽  
X Ray ◽  
Mixed Metal ◽  
Metal Organic ◽  
Daylight Lamp ◽  
Organic Framework

Mixed Ni/Fe-base metal-organic framework (Ni/Fe-MOF) with different molar ratios of Ni2+/Fe3+ have been successfully produced using an appropriate solvothermal router. Physicochemical properties of all samples were characterized using X-ray diffraction (XRD), Raman, field emission scanning electron microscopes (FE-SEM), fourier-transform infrared spectroscopy (FT-IR), N2 adsorption-desorption analysis, X-ray photoelectron spectroscopy (XPS), ultraviolet-visible diffuse reflectance spectra (UV-Vis DRS), and photoluminescence spectra (PL). The photocatalytic degradation performances of the photocatalysts were evaluated in the decomposition of rhodamine B (RhB) under a compact fluorescent daylight lamp. From XRD, IR, XPS, and Raman results, with the presence of mixed ion Fe3+ and Ni2+, MIL-88B (MIL standing for Materials of Institut Lavoisier) crystals based on the mixed metal Fe2NiO cluster were formed, while MIL-53(Fe) was formed with the presence of single ion Fe3+. From UV-Vis DRS results, Ni/Fe-MOF samples exhibited the absorption spectrum up to the visible region, and then they showed the high photocatalytic activity under visible light irradiation. A Ni/Fe-MOF sample with a Ni2+/Fe3+ molar ratio of 0.3 showed the highest photocatalytic degradation capacity of RhB, superior to that of the MIL-53(Fe) sample. The obtained result could be explained as a consequence of the large surface area with large pore volumes and pore size by the Ni2+ incorporating into the MOF’s structure. In addition, a mixed metal Fe/Ni-based framework consisted of mixed-metal cluster Fe2NiO with an electron transfer effect and may enhance the photocatalytic performance.

scholarly journals Construction of a mixed ligand MOF as “green catalyst” for the photocatalytic degradation of organic dye in aqueous media

RSC Advances ◽  
2021 ◽  
Vol 11 (38) ◽  
pp. 23838-23845
Author(s):  
Alamgir ◽  
Khalid Talha ◽  
Ying-Jie Wang ◽  
Raza Ullah ◽  
Bin Wang ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Crystal Violet ◽  
Metal Organic Framework ◽  
Aqueous Media ◽  
High Photocatalytic Activity ◽  
Organic Dye ◽  
Mixed Ligand ◽  
Green Catalyst ◽  
Metal Organic

A new metal–organic framework named BUT-206 has been successfully synthesized, which shows a high photocatalytic activity toward the degradation of crystal violet without using any photosensitizer or cocatalyst under UV-irradiation.

Metal organic framework derived CoFe@N-doped carbon/reduced graphene sheets for enhanced oxygen evolution reaction

2018 ◽  
Vol 5 (8) ◽  
pp. 1962-1966 ◽  
Author(s):  
Fanhao Kong ◽  
Kunfeng Chen ◽  
Shuyan Song ◽  
Dongfeng Xue
Keyword(s):  
Prussian Blue ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Metal Organic Framework ◽  
Graphene Sheets ◽  
Prussian Blue Analogues ◽  
Reduced Graphene ◽  
Metal Organic ◽  
One Step ◽  
The One

Architectures of CoFe@N-doped carbon/wrinkled rGO sheets are synthesizedviathe one-step annealing of Prussian blue analogues and GO sheet composites. The optimized structure exhibits a low overpotential of 278 mV to drive 10 mA cm−2and has a durable stability.

A bifunctional cationic metal–organic framework based on unprecedented nonanuclear copper(ii) cluster for high dichromate and chromate trapping and highly efficient photocatalytic degradation of organic dyes under visible light irradiation

2018 ◽  
Vol 47 (27) ◽  
pp. 9103-9113 ◽  
Author(s):  
Tian-Rui Zheng ◽  
Lin-Lu Qian ◽  
Min Li ◽  
Zhi-Xiang Wang ◽  
Ke Li ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Photocatalytic Degradation ◽  
Visible Light Irradiation ◽  
Organic Dyes ◽  
Metal Organic Framework ◽  
Light Irradiation ◽  
Highly Efficient ◽  
Metal Organic ◽  
Organic Framework

A bifunctional cationic MOF showed fast and highly efficient Cr2O72− and CrO42− trapping, and highly efficient photocatalytic activity.

scholarly journals Mesoporous Cu–Cu2O@TiO2 heterojunction photocatalysts derived from metal–organic frameworks

RSC Advances ◽  
2020 ◽  
Vol 10 (25) ◽  
pp. 14550-14555 ◽  
Author(s):  
Wenling Zhao ◽  
Chengcheng Liu
Keyword(s):  
Photocatalytic Activity ◽  
Visible Light ◽  
Visible Light Irradiation ◽  
Dye Degradation ◽  
Metal Organic Framework ◽  
Metal Organic Frameworks ◽  
High Photocatalytic Activity ◽  
Light Irradiation ◽  
Metal Organic ◽  
Organic Framework

Cu–Cu2O@TiO2 heterojunction photocatalyst derived from a metal–organic framework shows high photocatalytic activity for dye degradation under visible light irradiation.

scholarly journals Sustainable One-Pot Immobilization of Enzymes in/on Metal-Organic Framework Materials

Catalysts ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1002 ◽  
Author(s):  
M. Asunción Molina ◽  
Victoria Gascón-Pérez ◽  
Manuel Sánchez-Sánchez ◽  
Rosa M. Blanco
Keyword(s):  
Room Temperature ◽  
Metal Organic Framework ◽  
One Pot ◽  
Framework Materials ◽  
Immobilization Of Enzymes ◽  
Metal Organic ◽  
One Step ◽  
The One ◽  
Synthetic Approaches ◽  
Organic Framework

The industrial use of enzymes generally necessitates their immobilization onto solid supports. The well-known high affinity of enzymes for metal-organic framework (MOF) materials, together with the great versatility of MOFs in terms of structure, composition, functionalization and synthetic approaches, has led the scientific community to develop very different strategies for the immobilization of enzymes in/on MOFs. This review focuses on one of these strategies, namely, the one-pot enzyme immobilization within sustainable MOFs, which is particularly enticing as the resultant biocomposite Enzyme@MOFs have the potential to be: (i) prepared in situ, that is, in just one step; (ii) may be synthesized under sustainable conditions: with water as the sole solvent at room temperature with moderate pHs, etc.; (iii) are able to retain high enzyme loading; (iv) have negligible protein leaching; and (v) give enzymatic activities approaching that given by the corresponding free enzymes. Moreover, this methodology seems to be near-universal, as success has been achieved with different MOFs, with different enzymes and for different applications. So far, the metal ions forming the MOF materials have been chosen according to their low price, low toxicity and, of course, their possibility for generating MOFs at room temperature in water, in order to close the cycle of economic, environmental and energy sustainability in the synthesis, application and disposal life cycle.

Synthesis of a novel 2D zinc(ii) metal–organic framework for photocatalytic degradation of organic dyes in water

2019 ◽  
Vol 48 (47) ◽  
pp. 17626-17632 ◽  
Author(s):  
Jian-Peng Dong ◽  
Zhen-Zhen Shi ◽  
Bo Li ◽  
Li-Ya Wang
Keyword(s):  
Photocatalytic Activity ◽  
Photocatalytic Degradation ◽  
Organic Dyes ◽  
Metal Organic Framework ◽  
Metal Organic ◽  
Organic Framework

A new 2D zinc(ii) metal–organic framework exhibits efficient photocatalytic activity and recyclability towards the degradation of organic dyes in the absence of any photosensitizer or cocatalyst.

scholarly journals {Cu2SiW12O40}@HKUST-1 synthesized by the one-step solution method with efficient bifunctional activity for supercapacitor and oxygen evolution reaction

2021 ◽  
Author(s):  
Huan Liu ◽  
Li Ge Gong ◽  
Chun Xiao Wang ◽  
Chun Mei Wang ◽  
Kai Yu ◽  
...  
Keyword(s):  
Composite Materials ◽  
Oxygen Evolution Reaction ◽  
Solution Method ◽  
Metal Organic Framework ◽  
Oxygen Production ◽  
Water Oxygen ◽  
Metal Organic ◽  
One Step ◽  
Supercapacitor Performance ◽  
The One

The construction of polyoxometalates (POMs) and metal-organic framework (MOF) composite materials (POMOFs) is very desirable for efficient supercapacitor performance and electrocatalytic water oxygen production, but it is still challenging. Herein,...

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