Synthesis and characterization of metal–organic framework/biomass-derived CoSe/C@C hierarchical structures with excellent sodium storage performance

Nanoscale ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 4167-4176
Author(s):  
Xi Zhang ◽  
Peijie He ◽  
Bowen Dong ◽  
Nan Mu ◽  
Yangai Liu ◽  
...  
Keyword(s):  
Freeze Drying ◽  
Metal Organic Framework ◽  
Hierarchical Structures ◽  
Storage Performance ◽  
Hierarchical Composites ◽  
Metal Organic ◽  
Excellent Cycling Stability ◽  
Sodium Storage

CoSe/C@C hierarchical composites were fabricated using ZIF-67 and CMC aerogel as the precursor following freeze-drying and in-situ selenization. CoSe/C@C composites exhibited excellent cycling stability and outstanding Na+ storage performance.

scholarly journals Fabrication of Novel ZIF-8@BiVO4 Composite with Enhanced Photocatalytic Performance

Crystals ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 432 ◽  
Author(s):  
Yun-hui Si ◽  
Ya-yun Li ◽  
Yu Xia ◽  
Shao-ke Shang ◽  
Xin-bo Xiong ◽  
...  
Keyword(s):  
Photocatalytic Performance ◽  
Metal Organic Framework ◽  
X Ray Diffraction ◽  
Composite Photocatalyst ◽  
Photodegradation Efficiency ◽  
Photogenerated Electrons ◽  
Growth Method ◽  
Metal Organic

In this work, a novel metal-organic framework (MOF) and BiVO4 (BVO) composite photocatalyst was successfully synthesized by an in-situ growth method. The characterization of obtained samples was done by X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, N2 adsorption, and photoluminescence spectroscopy. The photocatalytic performance of ZIF-8@BiVO4 composite was evaluated by the degradation of methylene blue (MB) under simulated visible light irradiation. Compared with the mixture of BVO and ZIF-8, the composite photocatalyst exhibited superior photodegradation efficiency, which could be attributed to the synergistic effect between BVO and ZIF-8. The reduced recombination of photogenerated electrons and holes was considered to be an important reason for the enhancement of photocatalytic performance. This design demonstrates a rational method to improve the photocatalytic performance by combining photocatalysts with MOFs.

Metal–Organic Framework Derived CoS2 Wrapped with Nitrogen-Doped Carbon for Enhanced Lithium/Sodium Storage Performance

2020 ◽  
Vol 12 (11) ◽  
pp. 12809-12820 ◽  
Author(s):  
Fengping Xiao ◽  
Xuming Yang ◽  
Donghong Wang ◽  
Huimin Wang ◽  
Denis Y. W. Yu ◽  
...  
Keyword(s):  
Metal Organic Framework ◽  
Nitrogen Doped ◽  
Storage Performance ◽  
Metal Organic ◽  
Nitrogen Doped Carbon ◽  
Sodium Storage ◽  
Organic Framework

scholarly journals A binary metal organic framework derived hierarchical hollow Ni3S2/Co9S8/N-doped carbon composite with superior sodium storage performance

2017 ◽  
Vol 5 (23) ◽  
pp. 11781-11787 ◽  
Author(s):  
Xinye Liu ◽  
Feng Zou ◽  
Kewei Liu ◽  
Zhe Qiang ◽  
Clinton J. Taubert ◽  
...  
Keyword(s):  
Anode Materials ◽  
Metal Organic Framework ◽  
Carbon Composite ◽  
Rate Performance ◽  
Cycle Stability ◽  
Binary Metal ◽  
Storage Performance ◽  
Metal Organic ◽  
Sodium Storage ◽  
Organic Framework

The carbonization and sulfurization of a hierarchical hollow MOF leads to anode materials with exceptional performance in Na+ batteries with high cycle stability and rate performance.

scholarly journals Intermediates in the Synthesis of Zr-Based Metal-Organic Framework UiO-66

2019 ◽  
Author(s):  
Marco Taddei ◽  
Jeroen A. van Bokhoven ◽  
Marco Ranocchiari
Keyword(s):  
Crystallite Size ◽  
Aging Process ◽  
Metal Organic Framework ◽  
Aging Effect ◽  
Oh Groups ◽  
Metal Organic ◽  
Organic Framework

We recently discovered that aging a solution of zirconium(IV) tetrachloride (ZrCl<sub>4</sub>) in N,N-dimethylformamide (DMF) in the presence of water, followed by addition of terephthalic acid linker, reduces the crystallite size of the metal-organic framework UiO-66 [<i>Chem. Commun.</i> <b>2016</b>, <i>52</i>, 6411-6414]. In an effort to shed light into the nature of the aging effect and on its relationship with the crystallite size of UiO-66, we report here the isolation and structural characterization of a microcrystalline zirconium-based compound of formula [ZrCl(OH)<sub>2</sub>(DMF)<sub>2</sub>]Cl, which is formed during the aging process. The Zr(IV) ions are coordinated by hydroxide, DMF and chloride to produce a one-dimensional polymer. Thanks to the presence of two –OH groups per zirconium atom, [ZrCl(OH)<sub>2</sub>(DMF)<sub>2</sub>]Cl is a suitable precursor for the synthesis of UiO-66 in dry DMF, affording a product having smaller crystallite size than that obtained from a reaction mixture having the same chemical composition, but using ZrCl<sub>4</sub> as the Zr(IV) source. By starting from ZrCl<sub>4</sub> and generating [ZrCl(OH)<sub>2</sub>(DMF)<sub>2</sub>]Cl in situ in solution through aging, we obtained smaller crystallites as the aging time increased, proving that [ZrCl(OH)<sub>2</sub>(DMF)<sub>2</sub>]Cl plays a role in the aging process. The possible role of [ZrCl(OH)<sub>2</sub>(DMF)<sub>2</sub>]Cl in the crystallization mechanism of UiO-66 is also discussed.<br>

scholarly journals Structural characterization of framework–gas interactions in the metal–organic framework Co2(dobdc) by in situ single-crystal X-ray diffraction

2017 ◽  
Vol 8 (6) ◽  
pp. 4387-4398 ◽  
Author(s):  
Miguel I. Gonzalez ◽  
Jarad A. Mason ◽  
Eric D. Bloch ◽  
Simon J. Teat ◽  
Kevin J. Gagnon ◽  
...  
Keyword(s):  
Single Crystal ◽  
Structural Characterization ◽  
Metal Organic Framework ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metal Organic ◽  
Gas Interactions ◽  
Organic Framework

In situ single-crystal X-ray diffraction experiments enable the direct observation of weak metal–gas interactions in a metal–organic framework.

scholarly journals Backbonding contributions to small molecule chemisorption in a metal–organic framework with open copper(i) centers

2021 ◽  
Author(s):  
Gregory M. Su ◽  
Han Wang ◽  
Brandon R. Barnett ◽  
Jeffrey R. Long ◽  
David Prendergast ◽  
...  
Keyword(s):  
Fine Structure ◽  
Small Molecule ◽  
Metal Organic Framework ◽  
X Ray ◽  
Metal Site ◽  
Absorption Fine ◽  
Metal Organic ◽  
X Ray Absorption ◽  
Organic Framework

In situ near edge X-ray absorption fine structure spectroscopy directly probes unoccupied states associated with backbonding interactions between the open metal site in a metal–organic framework and various small molecule guests.

Sign in / Sign up

Export Citation Format

Share Document