The Chinese Academy of Sciences realizes the production of hydrogen peroxide by photocatalysis by simulating the leaf structure.
CTOnews.com March 19 news, according to the Chinese Academy of Sciences Dalian Institute of Chemical Physics news, recently, the Chinese Academy of Sciences Dalian Institute of Chemical Physics Catalysis basic State key Laboratory Micro / Nano reactor and reaction Engineering Innovation Special Zone Research team Liu Jian team and the University of Queensland Professor Zhang Xiwang team cooperation, made new progress in artificial photosynthesis into hydrogen peroxide (H2O2) research. By simulating the stomatal structure of plant leaves, the photocatalytic performance of the catalyst for the production of H2O2 was effectively improved, and the conversion rate of solar energy to chemical energy (SCC) reached 1.23%.
Artificial photosynthesis can use solar energy to transform the rich resources on the earth into necessary substances in order to achieve sustainable development. In recent years, photocatalytic synthesis of H2O2 has attracted much attention, because H2O2 has a wide range of applications, can be used as an oxidant and a new energy fuel. However, the efficiency of photocatalytic production of H2O2 is still low.
According to reports, through the micellar-mediated interface self-assembly strategy, the cooperative team grew two-dimensional mesoporous resorcinol-formaldehyde (RF) resin on the surface of reduced graphene oxide (rGO) to form a sandwich structure of RF resin-rGO-RF resin. The mesoporous channel in the material is like the stomata of plant leaves, which can effectively improve the mass transfer ability of the material. The cooperation team promotes the photocatalytic ability of the photocatalyst by enhancing the electron and mass transfer ability of the material, and 1.23% of solar energy can be converted to chemical energy under simulated sunlight, which is the highest efficiency in the field of photocatalytic H2O2 production of powder catalyst reported in the literature.
As a narrow band gap semiconductor polymer, RF resin has great potential in photocatalytic production of H2O2. Liu Jian's team has been committed to the synthesis strategy innovation and functionalization of phenolic resin nanomaterials for a long time, and a series of representative achievements have been achieved: monodisperse phenolic resin microspheres (Angew) were synthesized by St ö ber method. Chem. Int. Ed.), prepare a series of porous microspheres with controllable pore size and size, and hollow structure, yolk-eggshell structure, bowl-shaped phenolic resin polymer micro-nano materials (Nat. Commun., Adv. Mater., ACS Nano), effectively regulate the internal structure and functional group distribution of phenolic resin microspheres from the molecular level (Adv. Mater., Angew. Chem. Int. Ed.), etc.
CTOnews.com learned that the relevant research results, entitled Exceptional Photocatalytic Hydrogen Peroxide Production from Sandwich-Structured Graphene Interlayered Phenolic Resins Nanosheets with Mesoporous Channels, were published in Advanced functional Materials (Advanced Functional Materials). The research work is supported by the National Natural Science Foundation of China.
