Prof. WANG Lan | Publications & Academic Profile | SinoGreenTech

Research Publications & English Decoded Briefs

Showing 3 publications

SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3633-5

Phase Penetration: Key Drivers in Barrier Layer Failure of Hf-free Half-Heusler Thermoelectric Modules

High-temperature interfacial diffusion in Half-Heusler (HH) thermoelectric devices poses significant challenges for practical applications, particularly the diffusion of Ag from conventional solders, which degrades material performance and device stability. This study reveals anomalous Ag diffusion through a Cr powder barrier layer into Ti0.5Zr0.5NiSn0.98Sb0.02, driven by Sn phase penetration. In contrast, employing a Cr foil barrier layer pre-densified the material, effectively preventing Sn phase penetration and eliminating Ag diffusion pathways, thereby preserving junction integrity. After aging at 973 K for 30 days, the Cr foil junction maintained a clean interface with a low contact resistivity of 0.27 μΩ cm2. Benefiting from this interfacial design, a Hf-free HH module achieved a high conversion efficiency of 10.4% at a hot-side temperature of 976 K, alongside long-term stability. This work addresses critical bottlenecks in developing high-performance, low-cost HH modules, facilitating their commercial application in waste heat recovery.

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Environmental Chemistry•2026•DOI: 10.7524/j.issn.0254-6108.2025010804

Research Progress on Heterogeneous Fenton Technology Based on Carbon/Iron-Based Catalysts and Physical Field-Assisted Systems

Heterogeneous Fenton technology employs solid catalysts to activate H2O2, generating hydroxyl radicals (·OH) that oxidatively degrade organic pollutants. Among reported catalysts, iron-based materials are most prevalent but suffer from insufficient active sites and sluggish Fe(III)/Fe(II) cycling. Compositing iron with carbon materials increases active site density and accelerates Fe(II) regeneration, thereby enhancing catalytic efficiency. This review summarizes recent advances in carbon/iron-based heterogeneous Fenton catalysts, analyzing reaction mechanisms and characteristics for organic pollutant removal. It also discusses external energy field-assisted strategies (e.g., photo-, electro-, and ultrasound-assisted) that augment reaction kinetics. The paper concludes with perspectives on future development of carbon/iron-based Fenton-like materials, emphasizing the need for scalable synthesis and mechanistic elucidation. Key challenges include maintaining stability under continuous operation and achieving cost-effective production. The review highlights that carbon/iron composites with optimized interfacial properties can significantly improve H2O2 utilization and broaden pH applicability, addressing limitations of conventional Fenton processes. Future research directions include designing catalysts with tailored porosity and surface functionality, and integrating physical fields to synergistically enhance pollutant mineralization.

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SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3783-x

Synergistic innate-adaptive chemo-immunotherapy through a high-payload nanoplatform

The synergistic strategy combining chemotherapy and immunotherapy has recently demonstrated significant promise in cancer treatment. However, the substantial physicochemical disparities between chemotherapeutic agents and small-molecule immune adjuvants pose considerable challenges for co-delivery strategies. In this study, we designed a reactive oxygen species-responsive paclitaxel prodrug, PTX-PBA, which markedly enhanced drug encapsulation stability and dual-drug loading efficiency by various polymeric delivery systems. The resultant nanosystem (NanoPR) exhibited excellent physicochemical properties and ROS-triggered release profiles, effectively inducing immunogenic cell death in tumor cells while promoting dendritic cell maturation and CD8+ T cells activation. In murine models of 4T1 breast cancer and CT26 colon carcinoma, NanoPR achieved significant tumor growth inhibition and elicited durable immune memory responses. Collectively, this work provides an innovative molecular design strategy for the co-delivery of chemotherapeutics and immunomodulators, offering a robust foundation for the clinical translation of chemo-immunotherapy.

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