Prof. Xinyu Liu | Publications & Academic Profile | SinoGreenTech

Research Publications & English Decoded Briefs

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SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3844-9

Electrospun MOFs-Based Nanofibrous Membranes for Water and Air Purification: A Review

Global water scarcity and atmospheric pollution necessitate advanced remediation materials. Metal-organic frameworks (MOFs) offer high specific surface areas (up to 7000 m2 g−1), tunable pore sizes (0.3–4.0 nm), and abundant active sites, yet their application is hindered by agglomeration, poor recoverability, and structural fragility. Electrospinning embeds MOFs into polymeric nanofibers, yielding freestanding membranes with three-dimensionally interconnected porous networks that enhance dispersion, operational stability, and handling. This review systematically examines design strategies, mechanistic insights, and performance of electrospun MOF-based nanofibrous membranes for water purification (pharmaceutical residues, heavy metal ions, synthetic dyes, emulsified oils) and air purification (ultrafine particulate matter, volatile organic compounds), benchmarking against conventional counterparts. Recent progress in multifunctional synergistic systems, stimuli-responsive membranes, and enhanced environmental resistance is highlighted. Persistent challenges and future research directions are discussed to guide rational design of advanced MOF-integrated membrane technologies.

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SCIENCE CHINA Materials•2026•DOI: 10.1007/s40843-025-3698-5

Identifying the Surface Dynamic Evolution of Electrocatalysts during Oxygen Evolution Reaction by In Situ Techniques

The oxygen evolution reaction (OER) is a critical bottleneck in next-generation sustainable energy systems due to its sluggish kinetics. Developing cost-effective, high-efficiency electrocatalysts requires understanding the dynamic structural evolution at electrode-electrolyte interfaces under operating conditions. In situ techniques are invaluable for identifying active centers and monitoring key intermediates. This review comprehensively summarizes recent advances in cutting-edge in situ methods for characterizing OER electrocatalyst structure evolution. It provides a brief overview of active motifs and robust structures using multiple in situ correlative techniques, establishing essential structure-performance relationships and updating mechanistic understanding at atomic scale under realistic conditions. Key challenges and perspectives are highlighted to promote rational design of promising electrocatalysts for efficient oxygen-associated electrocatalysis and electrosynthesis.

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SCIENCE CHINA Materials•2025•DOI: 10.1007/s40843-025-3643-8

Design of multifunctional phosphonic acid molecule for highly efficient and stable inverted perovskite solar cells

Inverted perovskite solar cells (PSCs) suffer from defect-mediated nonradiative recombination and inefficient charge extraction, particularly at the buried interface and grain boundaries (GBs), which limit power conversion efficiency (PCE) and operational stability. This study introduces a multifunctional phosphonic acid molecule, (2-(3,6-bis(trifluoromethoxy)-9H-carbazol-9-yl)ethyl)phosphonic acid (M28), as an additive in the perovskite precursor solution. M28 spontaneously segregates toward the buried interface and GBs, fulfilling three roles: (1) slowing crystallization to enlarge grains and improve film quality, (2) passivating defects to suppress charge recombination, and (3) inducing p-type doping to create an extra electric field that promotes hole transport. Devices incorporating M28 achieve a champion PCE of 25.96% and retain 80% of initial efficiency after 1500 h of maximum power point tracking. This work demonstrates the efficacy of multifunctional phosphonic acid additives in addressing buried-interface and GB defects, offering a viable route to high-performance, stable inverted PSCs.

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