Commercial application of CO₂-to-fuel technology has been mainly restricted due to low-cut CO₂ adsorption and activation by photocatalyst, thus contributing to low/impure fuel yield. Defect engineering of key CO₂ activators onto excellent CO₂ adsorbent along with in-situ & co-production of H_adatoms could address these issues. Herein, we report rapid conversion of CO₂ to CH₃OH in a photocatalytic system composed of Co_xMo_yZn_1−x−yZIF-8 photocatalyst and NaBH₄-assisted H_adatoms production. Doping of Co & Mo into ZIF-8 provided active centers for CO₂ activation and structured highly efficient electron transport chains (ETCs) for selective conversion of continuous supply of CO₂ into CH₃OH (99%). Conversion of CO₂ by Co_xMo_yZn_1−x−yZIF-8 yields 9.96 mmole g_cat^-1 h^-1 of CH₃OH higher than reported ZIF-8 based photocatalyst in literature, and pristine ZIF-8, which only produced 94.2 µmole g^-1 of carbon monoxide. Mechanistically, engineered doping of Co_0.25/Mo_0.25 in Zn-ZIF-8 enhanced visible light absorption and mechanized ETCs due to d-orbitals and multiple redox states, which largely expediated CO₂ adsorption-activation. While in-situ & co-production of H_adatoms from NaBH₄ and water spitting boost conversion of activated CO₂ to CH₃OH. Interestingly, the controlled release of H_adatoms from NaBH₄ maintained a requisite charge gradient across ETCs, which was proven to be another reason for the high yield and selectivity of CH₃OH.¹³CO₂ analysis confirmed the source of C in CH₃OH was supplied CO₂, not by photocatalyst carbon that proved the stability of Co_xMo_yZn_1−x−yZIF-8. We believe this work will be a step forward for commercializing revolutionary CO₂-to-fuel technology, while results and novel interpretation will be key for multidisciplinary research.

_{CO 2}制燃料技术的商业应用主要受到光催化剂对低浓度CO ₂的吸附和活化的限制，从而导致燃料收率低/不纯。_{将关键的 CO 2}活化剂缺陷工程化到优秀的 CO ₂吸附剂上，以及 H_吸附原子的原位和联合生产可以解决这些问题。在此，我们报道了在由 Co _x Mo _y Zn _1-x-y ZIF-8 光催化剂和 NaBH ₄辅助 H_{吸附原子组成的光催化系统中 CO 2}快速转化为 CH _{3 OH}生产。_{将 Co 和 Mo 掺杂到 ZIF-8 中为 CO 2}活化提供了活性中心，并构建了高效的电子传输链 (ETC)，用于将连续供应的 CO ₂选择性转化为 CH ₃ OH (99%)。通过 Co _x Mo _y Zn _1-x-y ZIF-8转化 CO ₂产生 9.96 mmol g _cat ^-1 h ^-1的 CH ₃ OH，高于文献中报道的基于 ZIF-8 的光催化剂和原始 ZIF-8，其仅产生 94.2 µmole g ^-1一氧化碳。_{机械地，Co 0.25} /Mo _0.25的工程掺杂在 Zn-ZIF-8 中，由于 d 轨道和多个氧化还原状态，增强了可见光吸收和机械化 ETC，这在很大程度上加速了 CO ₂的吸附活化。而从 NaBH ₄原位和联合生产 H_吸附原子和水喷射促进活化的 CO ₂到 CH ₃ OH 的转化。有趣的是， NaBH _{4中 H吸附原子}的受控释放在 ETC 中保持了必要的电荷梯度，这被证明是 CH ₃ OH高产率和选择性的另一个原因。¹³ CO ₂分析证实了CH _{3中C的来源}OH 由 CO ₂提供，而不是由证明 Co _x Mo _y Zn _1-x-y ZIF-8 稳定性的光催化剂碳提供。_{我们相信这项工作将是革命性的 CO 2}燃料技术商业化的一步，而结果和新颖的解释将是多学科研究的关键。