Perovskite oxide/Ti3C2 MXene/foamed nickel composite material and preparation method and application thereof
A technology of perovskite oxides and composite materials, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problem of high cost, low reserves and limiting reaction rate and other problems, to achieve the effect of low cost, simple preparation process and high repeatability
Active Publication Date: 2021-10-22
NANJING FORESTRY UNIV
View PDF10 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Electrochemical water splitting is a convenient method to generate oxygen via the oxygen evolution reaction (OER), which involves a complex four-electron process (2H 2 O→O 2 +4H + +4e), and correlations between different elementary reactions often limit the reaction rate
At present, Ru / Ir-based oxides are generally regarded as effective electrocatalysts to achieve OER performance, but their practical application is limited by low reserves and high cost.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0031] Such as figure 1 As shown, the photothermal synergistic electrocatalytic La 0.9 Sr 0.1 CoO 3 / Ti 3 C 2 The preparation method of MXene / NF composite material, comprises the following steps:
[0032] (1) Weigh 0.5g Ti 3 AlC 2 (MAX), 2.96 g of NH 4 F, and measure 20 mL of HCl, and stir in a water bath at 60° C. for 48 h to obtain a black pasty liquid. After completely cooling down to room temperature, transfer the black paste liquid in the autoclave to a centrifuge tube, centrifuge at 9000rpm for 8min, and wash with deionized water. Repeat this three times until pH = 6. Freeze-dry the centrifuged substrate for 14h , get Ti 3 C 2 MXene solid nanosheets;
[0033] (2) Take 50 mL of dimethyl sulfoxide (DMSO), pour it into a conical flask, and add Ti 3 C 2 MXene solid, nitrogen gas (N 2 ) protected and kept at 25°C, while stirring with a magnetic stirrer at a speed of 15rpm for 48h; then centrifuged at a speed of 9000rpm for 8min, washed with deionized water, a...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| photothermal conversion efficiency | aaaaa | aaaaa |
| photothermal conversion efficiency | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a perovskite oxide / Ti3C2 MXene / foamed nickel composite material and a preparation method and application thereof, and belongs to the field of photo-thermal and electrochemistry. Zero-dimensional LaxSr1-xCoO3 nanoparticles and 2D Ti3C2MXene nanosheets are loaded on conductive foamed nickel, and the foamed nickel composite material for photo-thermal and electro-catalytic oxygen evolution is prepared. The Ti3C2MXene photo-thermal material in the composite material can convert a solar spectrum into heat energy, so that water purification evaporation is efficiently carried out; meanwhile, the generated heat energy accelerates electrochemical reaction kinetics, so that the oxygen evolution performance of an electro-catalysis material is effectively improved, and efficient oxygen production is achieved; the preparation raw materials provided by the composite material do not contain precious metal elements, so that the manufacturing cost is low; the process is simple and convenient, the repeatability is high, and large-scale production is easy; and the composite material has wide application prospects in the multidisciplinary crossing field of seawater desalination and water electrolysis oxygen production.
Description
technical field [0001] The invention belongs to the technical field of photothermal conversion and electrochemistry, and specifically relates to a perovskite oxide / Ti 3 C 2 MXene / nickel foam composite material and its preparation method and application. Background technique [0002] In recent years, with the rapid development of my country's economy, the demand for fresh water resources has also increased year by year. At present, the relatively mature air distillation permeation desalination technology and reactive permeation desalination technology have been widely researched and applied around the world, but they still generally have technical defects such as large energy consumption and high maintenance costs. Therefore, it is very important to explore efficient solar energy conversion technologies and materials for the utilization of solar energy. Solar photothermal conversion is the process of concentrating solar radiation energy through reflection, absorption or ot...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & AuthorityApplications(China)
IPC IPC(8): B01J23/83B01J27/22B01J35/00C02F1/04C02F1/30C25B1/04C25B1/55C25B11/031C25B11/061C25B11/091C02F101/20
CPCB01J27/22B01J23/002B01J23/83C25B1/04C25B1/55C25B11/031C25B11/091C25B11/061C02F1/30C02F1/04C02F1/048C02F2103/08C02F2101/20B01J2523/00B01J35/39B01J2523/24B01J2523/3706B01J2523/845Y02E60/36Y02A20/124
Inventor陆依张昊范德琪丁明烨杨小飞
OwnerNANJING FORESTRY UNIV