Engineering the growth of MOFs on substrates at the nanometer or even the molecular level is of major interest for taking MOFs beyond their uses as bulk materials and creating multifunctional features with advanced applications. Herein we report the SiO₂@ZIF-8 (core@shell) monodisperse nanospheres synthesized through a liquid-phase epitaxy stepwise growth (LPE) strategy. The controlled growth of ZIF-8 shell with nanometer-level precision could be achieved. The growth of the ZIF-8 shell can be adjusted by manipulating the influencing factors, such as growth circles, precursor solvent, precursor concentration, core size, synthesis temperature and implementation methods. The formation processes of ZIF-8 shell on the SiO₂ surface using different precursor solvents were also deduced. The composite exhibited faster adsorption for bisphenol A with ultra-high adsorption capacity per unit ares ZIF-8 shell with nanometer-level precision is of paramount impoa as compared toZIF-8-only material. Such controlled growth of homogeneourtance for the success of fabricating ZIFs layers in the channels of mesoporous material. Further, this paves the way for integrated MOF materials to address a wide range of challenges in the areas of catalysis, rapid detection, adsorption and separation.

为了使MOF不再用作块状材料并通过先进的应用创建多功能功能，对纳米或什至分子水平的MOF在衬底上的生长进行工程设计具有重大意义。本文中，我们报告了通过液相外延逐步生长（LPE）策略合成的SiO ₂ @ ZIF-8（核壳）单分散纳米球。可以实现纳米级精度的ZIF-8壳的可控生长。ZIF-8壳的生长可以通过控制影响因素来调节，例如生长环，前体溶剂，前体浓度，核尺寸，合成温度和实施方法。ZIF-8壳在SiO ₂上的形成过程还推导了使用不同前体溶剂的表面。与仅使用ZIF-8的材料相比，该复合材料对双酚A的吸附速度更快，每单位面积的ZIF-8壳具有极高的吸附能力，纳米级的精度非常重要。为了成功地在中孔材料的通道中制造ZIF层，这种均匀性的受控生长是成功的。此外，这为集成的MOF材料铺平了道路，以解决催化，快速检测，吸附和分离领域的各种挑战。