Insights into CO<sub>2</sub> adsorption and chemical fixation properties of VPI-100 metal–organic frameworks
作者:Jie Zhu、Jianzhao Liu、Yered Machain、Brittany Bonnett、Shaoyang Lin、Meng Cai、Matthew C. Kessinger、Pavel M. Usov、Wenqian Xu、Sanjaya D. Senanayake、Diego Troya、Alan R. Esker、Amanda J. Morris
DOI:10.1039/c8ta06383d
日期:——
Metal–organicframeworks (MOFs) have shown great promise as efficient CO2 adsorbents, as well as an emerging class of heterogeneous catalysts for conversion of CO2 to other useful chemicals. In this work, we synthesized and characterized two isostructural hafnium-based MOFs, denoted as Hf-VPI-100 (Cu) and Hf-VPI-100 (Ni). Both frameworks demonstrated high catalytic efficiency for cycloaddition of CO2
METAL-ORGANIC FRAMEWORKS FOR THE ADSORPTION AND CATALYTIC TRANSFORMATIONS OF CARBON DIOXIDE
申请人:VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
公开号:US20200055020A1
公开(公告)日:2020-02-20
Novel crystalline porous materials known as metal-organic frameworks (MOFs) and methods for their synthesis are provided herein. The MOFs include a M
6
(μ
3
-OH)
8
(OH)
8
(μ
2
,η
2
-(O
2
C)
2
cyclam)
8
cluster, and a metal atom coordinated to the one or more cyclam of the cluster, wherein M is Zr or Hf, and the metal atom is any one of Cu, Ni, Cr, Ru, Co, and Gd. The MOFs can be used as an adsorbent, alone or in a medium with other components, of CO
2
. The MOFs can also be used as a catalyst for the transformation of CO
2
and epoxides to cyclic carbonates. The MOFs can also be used in the electrochemical catalytic reduction of CO
2
. The MOFs can also be used for photocatalytic CO
2
reduction for the production of carbon-based fossil fuels. The MOFs can also be used for light-induced nitric oxide (NO) release. The MOFs can also be used as magnetic resonance imaging (MRI) agents.
Metal-organic frameworks for the adsorption and catalytic transformations of carbon dioxide
申请人:VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
公开号:US10994259B2
公开(公告)日:2021-05-04
Novel crystalline porous materials known as metal-organic frameworks (MOFs) and methods for their synthesis are provided herein. The MOFs include a M6(μ3-OH)8(OH)8(μ2,η2-(O2C)2cyclam)8 cluster, and a metal atom coordinated to the one or more cyclam of the cluster, wherein M is Zr or Hf, and the metal atom is any one of Cu, Ni, Cr, Ru, Co, and Gd. The MOFs can be used as an adsorbent, alone or in a medium with other components, of CO2. The MOFs can also be used as a catalyst for the transformation of CO2 and epoxides to cyclic carbonates. The MOFs can also be used in the electrochemical catalytic reduction of CO2. The MOFs can also be used for photocatalytic CO2 reduction for the production of carbon-based fossil fuels. The MOFs can also be used for light-induced nitric oxide (NO) release. The MOFs can also be used as magnetic resonance imaging (MRI) agents.
WATER-SOLUBLE NANOCRYSTALS AND METHODS OF PREPARING THEM
申请人:Wang Fuke
公开号:US20110129944A1
公开(公告)日:2011-06-02
Disclosed is a water soluble nanocrystal having a core comprising at least one metal M1 selected from an element of subgroup IIb, subgroup VIIa, subgroup VI11a, subgroup 1b, subgroup IV, main group II or main group III of the periodic system of the elements (PSE), at least one element A selected from an element of the main group V or VI of the periodic system of the elements, wherein a capping reagent is attached to the surface of the core of the nanocrystal, and wherein the capping reagent forms a host guest complex with a water soluble host molecule. Also disclosed is a water soluble nanocrystal having a core comprising at least one metal M1 selected from an element of subgroup I1b, subgroup VI1a, subgroup VI11a, subgroup 1b, subgroup IV, main group II or main group III of the periodic system of the elements (PSE), and at least one element A selected from an element of the main group V or VI of the periodic system of the elements, wherein a capping reagent is attached to the surface of the core of the nanocrystal, and wherein the capping reagent is covalently linked to a water soluble host molecule. Also disclosed is a water soluble nanocrystal having a core comprising at least one metal M1 selected from an element of subgroup I1b, subgroup VI1a, subgroup VI11a, subgroup 1b, subgroup IV, main group II or main group III of the periodic system of the elements (PSE), wherein a capping reagent is attached to the surface of the core of the nanocrystal, and wherein the capping reagent forms a host guest complex with a water soluble host molecule. Finally, compositions and uses of such nanocrystals are disclosed.