Liejin Guo

• PhD
• Laboratory Head,head of department at Xi'an Jiaotong University

Appropriate hydrophobicity and porosity of the proton-exchange membrane fuel cell (PEMFC) cathode catalyst layer (CCL) are essential for efficient charge and mass transport. In this study, the effects of the CCL hydrophobicity and porosity on PEMFC performance were comprehensively investigated. Compared to a normal CCL, a cathode hydrophobic dual-l...

Accurate prediction of the horizontal slug pressure drop is valuable for optimizing the multiphase pipeline transport process and ensuring the stable operation of the pipeline systems and treatment facilities. Experimental slug pressure drop research is conducted based on differential pressure signals in the short (0.065 m ID, 215D) and long (0.046...

Solar-driven photothermal catalytic CO2 conversion into fuels offers a promising approach to reducing fossil fuel dependence. To enhance the efficiency of photothermal CO2 reduction, photothermal catalyst design must not only sustain the high temperatures required for the reaction but also effectively utilize the entire solar spectrum. In this stud...

To ensure the flow safety of the offshore gathering pipeline system, it is critical to study the large-scale pressure wave propagation behavior and predict the two-phase pressure drop in the subsea pipeline. In this paper, the local flow structure, pressure wave propagation characteristics, and two-phase pressure drop of the horizontal pipeline are...

An interesting multi-site tandem synergistic effect was observed, in which phosphorus vacancies increase the N 2 adsorption rate, and then, the Cu 3 P/SnP@CF heterojunction lowers the energy barrier of rate-limiting hydrogenation reactions of the NRR.

The direct photocatalytic conversion of CO2 and H2O into high‐value C3 chemicals holds great promise but remains challenging due to the intrinsic difficulty of C1–C1 and C2–C1 coupling processes and the lack of clarity regarding the underlying reaction mechanisms. Here, the design and synthesis of a Cu‐ZnS photocatalyst featuring dispersed Cu singl...

Efficiently regulating reaction pathways for photoreduction CO2 to achieve required products is enormously strenuous. The design of active sites for CO2 adsorption, activation, and tuning of reaction pathways is pivotal to address this grand challenge. Herein, highly selective sites are developed for photoreduction CO2 to HCOOH and CO based on asym...

Energy consumption of hydrogen production significantly restricts the practical application of photoelectrochemical (PEC) water splitting technology for hydrogen production, despite its vital role in addressing the energy crisis. The direct high-pressure hydrogen production technology holds promise for reducing production costs and streamlining the...

High-precision computational fluid dynamics-discrete element method (CFD-DEM) simulation serves as a foundation for the detailed design of supercritical water fluidized bed reactors (SCWFBRs). However, as the scale of these reactors increases, the computational domain and reacting particles expand exponentially. Traditional adaptive mesh refinement...

Electrocatalysts based on high‐valent indium are promising for formate production via CO2 electroreduction. However, reconstruction often occurs during the reaction progress, resulting in a decline in catalytic performance. Here, a composite of In2O3/In2S3 is developed, and its catalytic performance exceeds that of either individual phase, particul...

Controlling the concentrations of H2O and CO2 at the reaction interface is crucial for achieving efficient electrochemical CO2 reduction. However, precise control of these variables during catalysis remains challenging, and the underlying mechanisms are not fully understood. Herein, guided by a multi-physics model, we demonstrate that tuning the lo...

Supercritical water gasification (SCWG) technology is highly promising for its ability to cleanly and efficiently convert biomass to hydrogen. This paper developed a model for the gasification of rice straw in supercritical water (SCW) to predict the direction and limit of the reaction based on the Gibbs free energy minimization principle. The equi...