Preparation and photocatalytic application of polyacid group cadmium metal hybrid material constructed by phosphomolybdic acid

A technology of hybrid materials and multi-acid-based cadmium, which is applied in the direction of physical/chemical process catalysts, organic compounds/hydrides/coordination complex catalysts, non-metallic elements, etc., can solve problems such as difficulty and poor catalytic activity, Achieve high efficiency and stable catalytic activity, excellent photocatalytic water splitting hydrogen production performance

Active Publication Date: 2021-10-01
HARBIN UNIV OF SCI & TECH
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Problems solved by technology

[0004] The purpose of the present invention is to solve the difficulty of synthesizing polyacid-based cadmium metal hybrid materials using the prior art and the problem of poor catalytic activity of traditional polyacids as photocatalysts to decompose water and produce hydrogen, and provide a kind of phosphomolybdic acid to construct polyacid-based cadmium Preparation of metal hybrid materials and their photocatalytic applications

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  • Preparation and photocatalytic application of polyacid group cadmium metal hybrid material constructed by phosphomolybdic acid
  • Preparation and photocatalytic application of polyacid group cadmium metal hybrid material constructed by phosphomolybdic acid
  • Preparation and photocatalytic application of polyacid group cadmium metal hybrid material constructed by phosphomolybdic acid

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specific Embodiment approach 2

[0027] Specific embodiment two: the present embodiment is a kind of preparation method that phosphomolybdic acid constructs multi-acid base cadmium metal hybrid material and is completed according to the following steps:

[0028] One, prepare the reaction solution with a pH value of 1.5: dissolve phosphomolybdic acid, cadmium nitrate, and 2,2-bipyridyl organic ligands into deionized water to obtain a reaction solution; adjust the pH value of the reaction solution to 1.5 to obtain a pH value 1.5 reaction solution;

[0029] The mol ratio of phosphomolybdic acid and metal cadmium salt described in step 1 is: 0.1: (0.2~1);

[0030] The molar ratio of phosphomolybdic acid and 2,2-bipyridine organic ligand described in step 1 is: 0.1:(0.2~0.5);

[0031] The volume ratio of the amount of substance of the phosphomolybdic acid described in step 1 to distilled water is: 0.1mmol: (20ml~40ml);

[0032] 2. Add the reaction solution with a pH value of 1.5 into a polytetrafluoroethylene re...

specific Embodiment approach 3

[0034] Specific embodiment three: the difference between this embodiment and specific embodiment two is: the molar ratio of phosphomolybdic acid described in step one and metal cadmium salt is: 1:3. Others are the same as in the second embodiment.

specific Embodiment approach 4

[0035]Specific embodiment four: the difference between this embodiment and specific embodiments two to three is: the molar ratio of phosphomolybdic acid and 2,2-bipyridine described in step one is: 1:2. Others are the same as the second to third specific embodiments.

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Abstract

The invention discloses preparation and photocatalytic application of a polyacid-based cadmium metal hybrid material constructed by phosphomolybdic acid, and relates to a polyacid-based cadmium metal organic hybrid material constructed by phosphomolybdic acid. The invention aims to solve the problems that an existing photocatalytic hydrogen production material does not produce hydrogen or the hydrogen production amount is low and the like due to the fact that the energy gap of the photocatalytic hydrogen production material synthesized in the prior art is relatively wide, photo-induced electron holes are easy to compound, the surface reaction of proton reduction is relatively difficult and the like. The invention designs and develops a polyacid group cadmium metal organic hybrid material constructed by phosphomolybdate, the chemical formula of the polyacid group cadmium metal organic hybrid material constructed by phosphomolybdate is (PMo12O40)[Cd(C10H8N2)3], and C10H8N2 is 2,2-dipyridyl. The synthesis method comprises the following steps: dissolving phosphomolybdic acid, cadmium nitrate and an organic ligand (2,2-dipyridyl) into deionized water, adjusting the pH value to 1.5, and conducting reacting for 4 days at the temperature of 160 DEG C. According to the invention, the polyacid group cadmium metal organic hybrid material constructed by phosphomolybdate can be obtained.

Description

technical field [0001] The invention discloses a polyacid-based cadmium metal hybrid material constructed with phosphomolybdic acid. Background technique [0002] The greenhouse effect and environmental pollution caused by the combustion of energy fuels such as traditional coal, oil and natural gas have become more and more serious, and have become social problems that cannot be ignored. Therefore, scientists are eager to find clean, safe and renewable new energy has become a key issue to be solved today. Solar energy is an inexhaustible source of energy. As a clean, green and recyclable energy source, hydrogen energy is one of the ways to effectively utilize solar energy by converting solar energy into hydrogen energy. To achieve high-efficiency photocatalytic conversion of solar energy, the design of photocatalysts is a core issue. [0003] Polyoxometalates (POMS), as a nanometer-sized oxygen-rich metal cluster, can perform multi-electron transfer without changing its s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C01B3/04
CPCB01J31/1845B01J31/1815B01J35/004C01B3/042B01J2531/64B01J2531/27Y02E60/36
Inventor 庞海军杨若茹胡素敏马慧媛张春晶于晓晶
Owner HARBIN UNIV OF SCI & TECH
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