A cp*co(co)i 2 Preparation method of cobalt-doped zinc oxide photoanode nanoarray

A nano-array, photoanode technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., can solve problems such as no related reports, and achieve good electron transfer efficiency, rapid separation and transport, and improved oxygen adsorption capacity

Active Publication Date: 2021-12-10
HENAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no relevant report on the research on cobalt-doped zinc oxide photoanodes supported by transition metal cobalt organic co-catalysts

Method used

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  • A cp*co(co)i <sub>2</sub> Preparation method of cobalt-doped zinc oxide photoanode nanoarray
  • A cp*co(co)i <sub>2</sub> Preparation method of cobalt-doped zinc oxide photoanode nanoarray
  • A cp*co(co)i <sub>2</sub> Preparation method of cobalt-doped zinc oxide photoanode nanoarray

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Take 10~200μL of 10mM zinc acetate ethanol solution and drop-coat it on the cleaned FTO substrate, 2500~3500 rpm for 30 seconds. Transfer to a muffle furnace, heat up to 300° C. for 2.5 hours for calcination over 40 minutes to obtain a zinc oxide seed layer. Put the above substrate into a polytetrafluoroethylene autoclave, add 0.01M Zn(NO 3 ) 2 ·6H 2 O and 0.01M hexamethylenetetramine, 80mL mixed solution with a molar ratio of 1:1, were hydrothermally reacted at 90°C for 6h to obtain ZnO photoanode nanoarrays. Cobalt nitrate with a molar ratio of Co / Zn=1% was added to the hydrothermal reaction solution, and CZ1 photoanode nanoarrays were obtained under the same conditions. The prepared Co-ZnO photoanode nanoarrays were immersed in Cp*Co(CO)I at room temperature in the dark 2 N,N-dimethylformamide solution for 10h, and finally washed with ethanol and water to obtain Co / CZ1 photoanode nanoarrays.

Embodiment 2

[0022] Take 10~200μL of 10mM zinc acetate ethanol solution and drop-coat it on the cleaned FTO substrate, 2500~3500 rpm for 30 seconds. Transfer to a muffle furnace, heat up to 300° C. for 2.5 hours for calcination over 40 minutes to obtain a zinc oxide seed layer. Put the above substrate into a polytetrafluoroethylene autoclave, add 0.05M Zn(NO 3 ) 2 ·6H 2 O and 0.05M hexamethylenetetramine, 80mL mixed solution with a molar ratio of 1:1, were hydrothermally reacted at 90°C for 6h to obtain ZnO photoanode nanoarrays. Cobalt nitrate with a molar ratio of Co / Zn=3% was added to the hydrothermal reaction solution, and CZ3 photoanode nanoarrays were obtained under the same conditions. The prepared Co-ZnO photoanode nanoarrays were immersed in Cp*Co(CO)I at room temperature in the dark 2 N,N-dimethylformamide solution for 10h, and finally washed with ethanol and water to obtain Co / CZ3 photoanode nanoarrays.

Embodiment 3

[0024] Take 10~200μL of 10mM zinc acetate ethanol solution and drop-coat it on the cleaned FTO substrate, 2500~3500 rpm for 30 seconds. Transfer to a muffle furnace, heat up to 300° C. for 2.5 hours for calcination over 40 minutes to obtain a zinc oxide seed layer. Put the above substrate into a polytetrafluoroethylene autoclave, add 0.25M Zn(NO 3 ) 2 ·6H 2 O and 0.25M hexamethylenetetramine, 80mL mixed solution with a molar ratio of 1:1, were hydrothermally reacted at 90°C for 6h to obtain ZnO photoanode nanoarrays. Cobalt nitrate with a molar ratio of Co / Zn=5% was added to the hydrothermal reaction solution, and the CZ5 photoanode nanoarray was obtained under the same conditions. The prepared Co-ZnO photoanode nanoarrays were immersed in Cp*Co(CO)I at room temperature in the dark 2 N,N-dimethylformamide solution for 10 h, and finally rinsed with ethanol and water to obtain Co / CZ5 photoanode nanoarrays.

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Abstract

The invention discloses a Cp*Co(CO)I 2 The preparation method of the cobalt-doped zinc oxide photoanode nano-array is to put the FTO substrate containing the zinc oxide seed layer into the polytetrafluoroethylene high-pressure reactor, and then add Zn(NO 3 ) 2 ·6H 2 The mixed solution of O and hexamethylenetetramine was hydrothermally reacted at 90°C for 5-10h to obtain ZnO photoanode nanoarrays; cobalt nitrate was added to the hydrothermal reaction liquid, and Co- ZnO photoanode nanoarrays; Co‑ZnO photoanode nanoarrays were immersed in Cp*Co(CO)I at room temperature in the dark 2 N,N-dimethylformamide solution for 6~10h, and finally washed with ethanol and water to obtain the target product. Cp*Co(CO)I prepared by the present invention 2 The cobalt-doped ZnO photoanode nanoarray not only maintains a good ZnO array morphology, but also accelerates the mobility of photogenerated electrons, has better stability, and finally exhibits excellent photoelectrochemical performance.

Description

technical field [0001] The invention belongs to the technical field of synthesis of nano-photoelectric materials, in particular to a transition metal cobalt organic molecular catalyst-pentamethylcyclopentadienyl cobalt diiodide (Cp*Co(CO)I 2 ) preparation method of cobalt-doped zinc oxide photoanode nano-array. Background technique [0002] With the development of science and technology and the progress of human civilization, energy issues have become increasingly prominent. The continuous consumption of non-renewable energy sources such as fossil fuels forces scientific researchers to continuously develop and utilize renewable energy sources. Solar photocatalytic water splitting technology has constructed a beautiful blueprint for the green, clean and sustainable development of human beings, but the slow water oxidation kinetics of photocatalytic performance, rapid photogenerated electron-hole recombination, and low electron migration rate hinder its large-scale applicatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B11/091C25B1/04B01J31/26
CPCC25B1/04B01J31/26B01J35/0033B01J35/004C25B1/55C25B11/051C25B11/091Y02E60/36Y02P20/133
Inventor 崔佳宝陈俊霞潘楠楠姜聚慧娄向东
Owner HENAN NORMAL UNIV
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