Isophthalic acid (IPA) has been considered to build metal-organic frameworks (MOFs), owing to its facile availability, unique connection angle-mode, and a wide range of functional groups attached. Constructing titanium-IPA frameworks that possess photoresponse properties is an alluring characteristic with respect to the challenge of synthesizing new titanium-based MOFs (Ti-MOFs). Here, we report the first Ti-IPA MOF (MIP-208) that efficiently combines the use of preformed Ti₈ oxoclusters and in situ acetylation of the 5-NH₂-IPA linker. The mixed solid-solution linkers strategy was successfully applied, resulting in a series of multivariate MIP-208 structures with tunable chemical environments and sizable porosity. MIP-208 shows the best result among the pure MOF catalysts for the photocatalytic methanation of carbon dioxide. To improve the photocatalytic performance, ruthenium oxide nanoparticles were photo-deposited on MIP-208, forming a highly active and selective composite catalyst, MIP-208@RuO_x, which features a notable visible-light response coupled with excellent stability and recycling ability.

由于间苯二甲酸的可用性，独特的连接角度模式以及广泛的官能团连接性，间苯二甲酸（IPA）被认为可以构建金属有机骨架（MOF）。就合成新的钛基MOF（Ti-MOF）的挑战而言，构建具有光响应特性的钛IPA框架是一个诱人的特性。在这里，我们报告了第一个Ti-IPA MOF（MIP-208），它可以有效地结合使用预先形成的Ti ₈氧簇和5-NH _2的原位乙酰化-IPA链接器。混合固溶体连接剂策略已成功应用，产生了一系列具有可调化学环境和相当大孔隙率的多元MIP-208结构。在纯MOF催化剂中，MIP-208表现出最佳的二氧化碳光甲烷化效果。为了提高光催化性能，将氧化钌纳米粒子光沉积在MIP-208上，形成高活性和选择性的复合催化剂MIP-208 @ RuO _x，该催化剂具有显着的可见光响应以及出色的稳定性和再循环能力。