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Photocatalysis

Introduction

Energy crisis, greenhouse effect and global warming have become common problems in the world. Since these problems appeared, people many efforts have been made to try to solve them. Photocatalysis can solve these problems well with great research value. First of all, photocatalysis utilize the clean energy of solar energy as the drive, triggering, directing and accelerating the chemical reactions, which is a green catalytic way; Secondly, they can catalyze many reactions, such as hydrogen evolution, carbon dioxide reduction and the degradation of organic  contaminants, making contributions to improving the environment; Finally, photocatalysis can result on obtaining products with high economic relevance such as the synthesis of complex organic molecules. At present, materials based on titanium dioxide, zinc oxide, tin oxide, zirconium dioxide, and cadmium sulfide are the most popular photocatalysts. However, these traditional photocatalysts suffer from weak light absorption capacity, difficulty in activation, easy electron–hole recombination, poor stability, and other issues. Thus, how to find efficient photocatalysts remains a great challenge.

Photocatalysis

Advantages of MOFs and COFs in Photocatalysis

MOFs and COFs are the promising efficient photocatalyst materials, compared with the traditional materials, MOFs and COFs demonstrate the following advantages[1]:

  • Designable structures and components: the absorption capacity and band structure of MOFs and COFs can be finely adjusted by changing the chemical structure of monomer, such as the inclusion of suitable π-units into their well-ordered extended structures that confer photocatalytic activity.
  • Easy to functionalize: MOFs and COFs can be functionalized in different ways, thus facilitating the introduction of photocatalytic sites.
  • High specific surface areas and good stability: this allows the catalytic sites on the MOFs and COFs that disperse efficiently, fully expose and remain stable during the photocatalytic processes.

Alfa Chemistry can provide the high-quality MOFs and COFs which can be mainly used in the following photocatalytic fields:

Photocatalysis

Water Splitting

Hydrogen evolution by photochemical water splitting has been regarded as the most promising approach to produce hydrogen. MOFs and COFs are considered a good material for photocatalytic water splitting. Alfa Chemistry provides a series of MOFs and COFs with excellent capacity for use in producing hydrogen.

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Photocatalysis

Carbon Dioxide Reduction

Efficient capture and photocatalytic transformation of CO2 is a promising strategy to address excessive CO2 emissions and global warming challenges induced by burning fossil fuels. Alfa Chemistry provides a series of MOFs and COFs with excellent capacity for use in photocatalytic carbon dioxide reduction.

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Photocatalysis

Organic Reactions

Photocatalytic MOFs and COFs have been applied to synthetic applications in order to obtain organic molecules of different complexity. Alfa Chemistry provides a series of MOFs and COFs with excellent capacity for use in photocatalytic organic reactions.

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Photocatalysis

Organic Pollutants Degradation

Photocatalytic degradation of pollutants such as methylene blue, methylene orange and rhodamine is an effective way to solve environmental pollution. Alfa Chemistry provides a series of high-quality MOFs and COFs with excellent capacity for use in degradation of organic pollutants.

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What Can Alfa Chemistry Do

Alfa Chemistry offers all sorts of high-quality MOFs and COFs for the photocatalytic fields of photocatalytic water splitting, photocatalytic carbon dioxide reduction, photocatalytic organic reactions, degradation of organic pollutants and others. And our professional technology team that can also provide customers with high-quality MOFs and COFs design and customization services, no matter what design ideas you have, we will implement them together with you. In addition, Alfa Chemistry is committed to supporting customers a series of solutions in photocatalytic fields by using MOFs and COFs. Please contact us immediately to order or cooperate in research and development with high quality and reasonable price.

Reference:

  1. Li L.; et al. Photocatalytic application of covalent organic frameworks [J]. Chemical Journal of Chinese Univerities-Chinese. 2020, 41 (9), 1917-1932.

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