This is the first representation of novel sodalite zeolitic imidazolate framework-7 (ZIF-7) which has been made in ethanolic solution at room temperature via an ammonia atmosphere. High thermal stability up to 400 °C is representative of great persistence which has been proved by XRD and TG data. Chemical durability of the as-made ZIF-7 especially at boiled DMF exhibited by XRD patterns can present it as an interesting material without structural alteration after treatment in such harsh condition. Reversible phase transformation of ZIF-7 was totally checked by immersing in ethanol and DMF indicated that the framework can maintain its structural flexibility under heat and solvent treatment. Moreover, the “gate-opening” phenomenon performed by CO₂ adsorption-desorption reveals structural breathing effect of ZIF-7 framework that makes it as potential material in CO₂ adsorption/separation. In the end, the sacrificial metal-doped (Mn²⁺, Ni²⁺, Cu²⁺, Cd²⁺ and Ag⁺) ZIF-7 precursors were applied for preparation of their corresponded metal-doped ZnO as the heterogeneous catalyst to degrade Rhodamine-B (RhB) dye in water under UV-irradiation (up to 99% within 90 minutes by 0.5% Ag-ZnO (S15)). The recyclability experiment after 5 runs for the optimized catalyst demonstrated that the metal-doped ZnO can be operated consecutively without remarkable decreasing in its activity. These observations exhibit the excellent and beneficial properties of metal-doped ZnO can be as heterogeneous photocatalyst for the removal of organic contaminants in water.

这是新颖的方钠沸石沸石咪唑酸盐骨架7（ZIF-7）的首个代表，该骨架在室温下通过氨气在乙醇溶液中制成。XRD和TG数据证明了高达400°C的高热稳定性是持久性的代表。制成的ZIF-7的化学耐久性，尤其是X射线衍射图显示的沸腾DMF的化学耐久性，可以将其作为一种有趣的材料，在如此苛刻的条件下进行处理后，不会发生结构改变。通过浸入乙醇中完全检查了ZIF-7的可逆相变，DMF表明该框架在热处理和溶剂处理下可以保持其结构柔性。而且，CO _2造成的“开门”现象吸附-解吸揭示了ZIF-7骨架的结构呼吸作用，使其成为CO ₂吸附/分离的潜在材料。最后，牺牲金属掺杂（Mn 2 ⁺，Ni 2 ⁺，Cu 2 ⁺，Cd ²⁺和Ag ⁺）将ZIF-7前体用于制备相应的金属掺杂ZnO作为非均相催化剂，以在紫外线照射下在水中降解若丹明B（RhB）染料（在90分钟内由0.5％Ag-ZnO降解高达99％（ S15））。优化催化剂运行5次后的可回收性实验表明，掺杂金属的ZnO可以连续运行，而活性没有明显下降。这些观察结果表明，掺杂金属的ZnO可以作为多相光催化剂用于去除水中的有机污染物，具有优异的有益性能。