The technology of electrolyzing water to prepare high-purity hydrogen is an important field in today's energy development. However, how to prepare efficient, stable, and inexpensive hydrogen production technology from electrolyzed...

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In terms of the large‐scale hydrogen production by water electrolysis, achieving the bifunctional electrocatalyst with high efficiency and stability at high current densities is of great significance but still remains a grand challenge. To address this issue, herein, one unique hybrid electrode is synthesized with the local photothermal effect (LPTE) by supporting the novel ternary nickel (Ni)bismuth (Bi)sulfur (S) nanosheet arrays onto nickel foam (Ni3Bi2S2@NF) via a one‐pot hydrothermal reaction. The combined experimental and theoretical observations reveal that owing to the intrinsic LPTE action of Bi, robust phase stability of Ni3Bi2S2 as well as the synergistic effect with hierarchical configuration, upon injecting the light, the as‐prepared Ni3Bi2S2 exhibits remarkably improved efficiency of 44% and 35% for the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), respectively. Such enhanced values are also comparable to those performed in working media heated to 80 °C. In addition, the overall water splitting system by using Ni3Bi2S2@NF as bifunctional electrodes only delivers an ultralow voltage of 1.40 V at 10 mA cm−2 under LPTE, and can be stable more than 36 h at 500–1000 mA cm−2. More broadly, even worked at 0–5 °C, alkaline simulated seawater and high salt seawater, the electrodes still show apparent LPTE effect for improving catalytic efficiency.

Hydrophobic charge-induction chromatography (HCIC) has emerged as an efficient method for antibody purification, but traditional packed-bed chromatography continues to suffer from high pressure drop and low transport efficiency. A versatile surface modification method is proposed to prepare HCIC membrane adsorbers. We first modified a commercial regenerated cellulose (RC) membrane by the cationic ring-opening polymerization (CROP) of diethylene glycol diglycidyl ether (DEGDE), producing the RC-g-PDEGDE membrane, which was then modified by the ringopening reaction of an epoxy group with a sulfydryl group in four mercaptoheterocyclic ligands. Bovine serum albumin (BSA) and human immunoglobulin G (IgG) were used as model contaminant and antibody, respectively. The highest ligand density achieved is 370 mmol/L, and the static and dynamic adsorption capacities of IgG reached 195 and 65 mg/mL, respectively. The high dynamic capacity and IgG recovery (96%) are believed to benefit from the branched structure of DEGDE and convective transport in membrane pores.