Researchers Achieve Breakthrough in Biomass Valorization Using Atomic Lattice-Matched Catalysts for Glycerol Conversion

Professor Yiming Liu’s team develops an atomic lattice-matched catalyst to convert glycerol into high-value DHA with 35% selectivity and 40-hour stability.

By: AXL Media

Published: May 1, 2026, 4:43 AM EDT

Source: Information for this report was sourced from EurekAlert!

Addressing the Challenges of Biodiesel Byproducts

The global production of biodiesel consistently generates a significant surplus of low-value glycerol, making its conversion into high-value chemicals a priority for sustainable biomass utilization. One of the most sought-after derivatives is dihydroxyacetone, a compound widely used in the cosmetic and pharmaceutical industries. Traditionally, the photoelectrocatalytic systems used for this conversion have been hampered by high carrier recombination rates and poor selectivity. These inefficiencies are often the result of lattice mismatches at the heterojunction interfaces of catalysts, which weaken the necessary charge transfer and limit the feasibility of large-scale industrial applications.

Precision Engineering of Atomic Interfaces

To overcome these structural limitations, a research team led by Professor Yiming Liu at the Taiyuan University of Science and Technology has introduced a lattice-matching engineering strategy. By precisely controlling annealing temperatures at 300 °C, the researchers successfully grew hexagonal tungsten trioxide on titanium dioxide nanorods. This near-epitaxial growth resulted in an atomic-level coherent interface with an ultra-low lattice mismatch of only 0.027%. This specific structural alignment is critical for establishing a robust internal environment that facilitates the movement of electrons required for chemical transformation.

Optimizing Charge Transfer Dynamics

The atomic-scale matching between the two materials induces a powerful 3.71 eV built-in electric field, which significantly optimizes the S-scheme charge transfer process. According to the findings published in the Chinese Journal of Catalysis, this optimized field prevents the loss of energy-carrying particles, ensuring they are available for the oxidation of glycerol. By synchronizing these internal charge dynamics with the surface reactions, the hexagonal photoanode achieves a level of efficiency that significantly surpasses monoclinic versions of the same material, which are subjected to higher thermal processing and greater structural misalignment.