Enhancing the generation of active groups is of great significance for alleviating the catalyst deactivation of formaldehyde (HCHO) by accelerating the decomposition of intermediate products. Herein, an electric-field-enhanced catalytic effect was proposed for the efficient capture and degradation of HCHO base on carbon cloth loaded manganese oxide catalyst (MnO_x-CC). Under the action of electric field, MnO_x can generate more hydroxyl radicals (•OH) and superoxide radicals (•O₂^-), thus accelerating the degradation of HCHO and intermediates at room temperature. After the introduction electric field (∼1 ×10⁴ V/m), •O₂^- and •OH radical on the surface of MnO_x-CC catalyst can be increased by 8 times and 23 times, respectively. At weight hourly space velocity of 300,000 mL/(g_cat h) for ∼15 ppm HCHO, MnO_x-CC-Electric Field catalyst reached the removal efficiency of 99.4%, and the CO₂ conversion efficiency of 81.2%, without decrease significantly within 80 h. Theoretical calculation shows that the electric field can increase the electron state density of Mn atom at the Fermi level and reduce the adsorption energy of HCHO, O₂ and H₂O, thus promoting the generation of active groups and degradation of intermediate products. The electric-field-enhancement catalytic effect provides a new approach for the degradation of Volatile Organic Compounds.

增强活性基团的产生对于通过加速中间产物的分解来减轻甲醛（HCHO）的催化剂失活具有重要意义。在此，提出了一种电场增强的催化作用，用于在碳布负载的氧化锰催化剂 (MnO x -CC ₎上有效捕获和降解 HCHO 。在电场作用下，MnO _x可以产生更多的羟基自由基(•OH)和超氧自由基(•O ₂ ^- )，从而加速HCHO及其中间体在室温下的降解。引入电场(∼1 ×10 ⁴ V/m)后， MnO _x表面的•O ₂ ^{-和•OH自由基}-CC催化剂可分别提高8倍和23倍。_{在300,000 mL/(g cat} h)的重时空速下，对于~15 ppm HCHO，MnO _x -CC-Electric Field催化剂达到99.4%的去除效率和81.2%的CO ₂转化效率，在80 小时。_{理论计算表明，电场可以提高Mn原子在费米能级的电子态密度，降低HCHO、O 2}和H ₂ O的吸附能，从而促进活性基团的产生和中间产物的降解。电场增强催化效应为挥发性有机化合物的降解提供了一种新途径。