Northwestern Polytechnical University team made a series of important progress in the field of hydrogen production by water splitting

Recently, the team of Professor Zhang Jian from the Department of Applied Chemistry of the School of Science of Northwestern Polytechnical University has made important progress in the research of photoelectric / electrocatalytic water decomposition catalytic materials for hydrogen production, and related research works were published in "Advance Mater." Factor: 21.95) and "German Applied Chemistry" (Angew. Chem.-Int. Edit., Impact factor: 12.102).

Photovoltaic / electrocatalytic water splitting to produce hydrogen energy converts electrical energy generated by light energy or new energy into hydrogen energy that is easy to store and environmentally friendly. It is the core technology of the future hydrogen energy era. Professor Zhang Jian ’s research results in this field are as follows:

One is to design a brand-new gradient homojunction material with continuous bending energy band. This structure effectively promotes the separation and transfer of photo-generated charge carriers, thereby improving the efficiency of photocatalytic hydrogen splitting to produce hydrogen. Related research results "Poly (1,4-diethynylbenzene) Gradient Homojunction with Enhanced Charge Carrier Separation for Photoelectrochemical Water Reduction" was published on Adv. Mater. Professor Zhang Jian is the co-corresponding author and WIT is the co-corresponding author unit.

Second, the use of polymers with the designability of molecularly adjustable band gaps / positions and active centers. Polarized thiophene-based monomers combined with acetylenic polymers can greatly broaden the light absorption range and promote charge separation. / Transmission and CC triple bonds can be converted into active sites for water reduction, achieving the highest hydrogen production efficiency of polymer materials. Related research results "Molecular Engineering of Conjugated Acetylenic Polymers for Efficient Cocatalyst-free Photoelectrochemical Water Reduction" published in Angew. Chem.-Int. Edit., And was selected as the VIP (Top 5%) paper. Professor Zhang Jian is the co-corresponding author, and West China University is the co-corresponding author.

The third is based on the progress made in the study of carrier effects and interface effects in OER and HER electrocatalysts. A review paper "Support and Interface Effects in Water Splitting Electrocatalysts" was published in Adv. Mater. West China University is the first unit to complete.

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