二氧化碳作为“温室气体”的主要组成之一，但随着科技的进步，科学家可对其进行各种转化。本文通过二氧化碳自述的方式，借用拟人化的手法，介绍了二氧化碳通过催化转化制备各类化合物以及其他类物质、作为超临界流体使用、作为充电宝使用，让读者以生动活泼的方式了解二氧化碳的大有可为，也为在小朋友心中埋下一颗勇于探索的种子，激发他们实现各种变废为宝的勇气。

教育数字化为高校化学实验教学带来机遇与挑战。本文以磁化率测定实验为例，探讨了融合微观原理、晶体结构和电子排布的动画视频，集成实验原理、数据处理和师生反馈的微信小程序等数字化赋能。实践证明这些举措实现了抽象原理形象化、微观结构可视化、数据处理便捷化和师生互动跨时空化，提升了实验数字化水平和教学效果。

采用两步水热法制备了BiSbO₄/BiOBr复合材料，并对其微观形貌、物相结构、化学组成、光学性能、光催化性能进行测试。结果表明：由纳米棒组成的BiSbO₄成功负载到片状BiOBr表面，二者产生的异质结结构不仅拓宽了催化剂的光响应范围还提升了光生电子-空穴对分离效率。其在模拟可见光下的光催化性能都优于单一的BiSbO₄和BiOBr，当BiSbO₄在复合材料中的质量分数为6%时，所制备的复合材料的光催化降解亚甲蓝(MB)性能最佳，其在模拟可见光下照射120 min后对MB的降解率达91.3%，经过4次循环后降解率仍有77.4%。

Cs_xWO₃/TiO₂ composites with full‐spectrum catalytic activity were prepared by solvothermal reaction. The composites were characterized using X‐ray diffraction (XRD) analysis, scanning electron microscopy (SEM), transmission electron microscopy (TEM), specific surface area testing, X‐ray photoelectron spectroscopy (XPS), and UV‐Vis diffuse reflectance spectra (UV‐Vis DRS). Cs_xWO₃ and TiO₂ were uniformly bonded together in the composites. The heterojunction structure was formed. The band gap was reduced from 2.75 to 2.65 eV. The photocatalytic property of Cs_xWO₃/TiO₂ was demonstrated by the degradation rates of 20 mg·L^-1 methylene blue dye, which were 99.7%, 91.4%, and 70.7% under irradiation from a 300 W high‐pressure mercury lamp, a 500 W xenon lamp, and a 400 W infrared lamp, respectively. After five cycles of photocatalytic degradation, the composite photocatalyst still showed a degradation efficiency of 87.6%. This indicates that Cs_xWO₃/TiO₂ has good photocatalytic degradability and cyclic stability. The photocatalytic mechanism of Cs_xWO₃/TiO₂ was investigated. The trapping experiments of the active species showed that the main active substances were the empty hole (h⁺) and hydroxyl radical (·OH).