以单一Fe²⁺作为铁源，0.4%的H₂O₂为氧化剂，NaOH为沉淀剂，采用氧化共沉淀法制备了尺寸为7 nm的Fe₃O₄颗粒。为进一步体外模拟肿瘤饥饿治疗，设计了一个包含5 mL(10 μg·mL^-1)的葡萄糖氧化酶和15 mL(5 mg·mL^-1)葡萄糖溶液的体系，以探究纳米Fe₃O₄的类过氧化氢酶(CAT)与类过氧化物酶(POD)催化性能的最适条件。结果表明：在1 mg·mL^-1 pH=5.0时，纳米Fe₃O₄的类CAT活性能推动葡萄糖氧化反应的反应速度增加、限度增大；pH=5.0时，纳米Fe₃O₄的类POD活性更好，能高效率催化H₂O₂产生活性氧。

利用多齿席夫碱配体H₂L(H₂L=(E)-6-(羟甲基)-N′-((6-甲氧基吡啶-2-基)亚甲基)吡啶酰肼)与Ln(dbm)₃·2H₂O反应，通过溶剂热法，设计与构筑了2例新的三核稀土配合物[Ln₃(dbm)₅(L)₂(CH₃OH)₂]·CH₂Cl₂，其中Ln=Pr (1)、Ho (2)，Hdbm=二苯甲酰甲烷。单晶X射线衍射分析表明：配合物1与2同构，其结构由3个Ln(Ⅲ)离子、5个二苯甲酰甲烷阴离子(dbm^-)、2个席夫碱配体L^2-、2个配位的CH₃OH及1个结晶CH₂Cl₂分子组成。3个中心Ln(Ⅲ)离子通过4个μ₂-O原子相互连接，形成折线形的Ln₃核。生物活性研究表明，配体H₂L、Ln(dbm)₃·2H₂O及配合物1和2均具有较好的抑菌活性。与配体H₂L及Ln(dbm)₃·2H₂O相比较，稀土配合物具有更强的抑菌活性。此外，采用紫外光谱法、循环伏安法和荧光光谱法研究了配合物1和2与小牛胸腺DNA(ctDNA)之间的相互作用，结果表明配合物主要以插入键合的方式与ctDNA结合。

Photoelectrochemical water splitting using semiconductor materials is one of the most promising methods for converting solar energy into chemical energy. Among the commonly used semiconductors, p-type CuBi₂O₄ is considered one of the most suitable photocathode materials and can allow a theoretical photocurrent density of about 20 mA·cm⁻² for photoelectrochemical water splitting. However, due to severe charge carrier recombination, the obtained photocurrent density is much lower than the theoretical value. Highly efficient photoelectrochemical performance relies on fast charge carrier separation and transport, and prompt reaction kinetics. In this study, we report the development of a polyoxometalate-modified CuBi₂O₄/Mg-CuBi₂O₄ homojunction photocathode to improve both the bulk and interfacial charge carrier transport in the photocathode. For the bulk of the photocathode, the built-in electric field originating from the CuBi₂O₄/Mg-CuBi₂O₄ homojunction promotes the migration of photo-excited electrons on the conduction band from pure CuBi₂O₄ to Mg-doped CuBi₂O₄. Additionally, the electric field facilitates the transfer of holes from the valence band of Mg-doped CuBi₂O₄ to pure CuBi₂O₄. This directional transfer of both photo-excited electrons and holes plays a significant role in promoting separation and suppressing the recombination of the charge carriers. On the surface of the photocathode, the reduced polyoxometalate co-catalyst Ag₆[P₂W₁₈O₆₂] (AgP₂W₁₈) was used as a proton sponge to accelerate surface reaction kinetics and suppress carrier recombination. These synergistic effects improved the photo-generated charge carrier transfer and reaction kinetics. As a result, the novel photocathode displayed excellent photoelectrochemical properties, and the photocurrent density was observed to be −0.64 mA·cm⁻² at 0.3 V vs. RHE, which is better than that of −0.39 mA·cm⁻² for a pure photocathode. Furthermore, the novel photocathode had an applied bias photon-to-current efficiency (ABPE) higher than 0.19% at 0.3 V vs. RHE. In contrast, the pure photocathode had an ABPE of ~0.12% under the same conditions. Additionally, when H₂O₂ was used as an electron scavenger, the photocurrent density was −3 mA·cm⁻² at 0.3 V vs. RHE, which is an improvement of approximately 1.5 times compared to the pure photocathode. Furthermore, the charge separation and charge injection efficiency of the novel photocathode were significantly improved compared with the pure photocathode. The experimental results conclusively indicate that the formation of the CuBi₂O₄/Mg-CuBi₂O₄ homojunction and AgP₂W₁₈ modification played a significant role in the improved performance of the CuBi₂O₄ photocathode. The performance of the novel photocathode was comparable with the results reported in previous studies, demonstrating its promising potential in real applications.