Crystallization kinetics of metal oxides is an exciting subject because it directly relates to the structure and property of the metal oxides. Recently, doping ZnO by transition metals shown advantageous in the modification of the morphology of ZnO in photocatalytic applications as well as other specific applications. In the current research, Mn–Fe co-doped ZnO nano-powders synthesized via the Pechini sol–gel process. Through differential scanning calorimetry (DSC), X-ray diffraction (XRD), High-Resolution transmission electron microscopy (HR-TEM), field emission scanning electron microscopy (FE-SEM), and selected area electron diffraction (SAED) the crystallization kinetics, growth mechanism; morphological as well as the structural characteristics of the Mn–Fe co-doped ZnO dry gels studied, respectively. The XRD and SAED results revealed that the dry gels calcined at 800 °C for 2 h have a wurtzite symmetry. By a non-isothermal DSC technique, the crystallization activation energy for wurtzite Mn–Fe co-doped ZnO calculated ~308.19 kJ/mol. Bulk nucleation was dominant in the wurtzite Mn–Fe co-doped ZnO crystallization; since the crystallization growth mechanism index (m) and morphology parameter (n) were close to 3.0. Wurtzite Mn–Fe co-doped ZnO powders had a semispherical morphology with a primary particle size from 20 to 30 nm using the electron microscopy examination.

金属氧化物的结晶动力学是一个令人兴奋的课题，因为它直接关系到金属氧化物的结构和性质。最近，在光催化应用以及其他特定应用中，用过渡金属掺杂ZnO在改变ZnO形态方面显示出优势。在当前的研究中，通过Pechini溶胶-凝胶工艺合成了Mn-Fe共掺杂的ZnO纳米粉。通过差示扫描量热法（DSC），X射线衍射（XRD），高分辨率透射电子显微镜（HR-TEM），场发射扫描电子显微镜（FE-SEM）和选定区域电子衍射（SAED）的结晶动力学，增长机制；分别研究了Mn-Fe共掺杂ZnO干凝胶的形貌和结构特征。XRD和SAED结果表明，在800°C下煅烧2 h的干凝胶具有纤锌矿对称性。通过非等温DSC技术，纤锌矿锰铁共掺杂ZnO的结晶活化能约为308.19 kJ / mol。纤锌矿是纤锌矿型Mn-Fe共掺杂ZnO结晶的主要形式。自结晶生长机理指数（m）和形态参数（n）接近3.0。用电子显微镜检查，纤锌矿型Mn-Fe共掺杂ZnO粉末具有半球形形态，一次粒径为20至30 nm。