Zinc oxide (ZnO) powders were prepared by solution combustion method using trimethyloctylammonium bromide (OTAB) and a mixture of OTAB and citric acid as fuel. Single phase ZnO powders with wurtzite structure were directly formed at high fuel contents (φ ≥ 1). The porous microstructure of combusted ZnO powders by mixed fuels had the specific surface area in the range of 73–416 m²/g in which increased with the increase of amount of fuels. The ZnO powders synthesized by single OTAB fuel were composed of the compacted agglomeration particles with cuboid-like morphology. The optical and photocatalytic properties of ZnO powders were determined as a function of fuel type and contents by diffuse reflectance spectroscopy and photoluminescence spectroscopy techniques. The ZnO powders obtained by OTAB-citric acid mixed fuel at φ = 1.5 showed the highest adsorption (53%) and photodegradation (95%) efficiency of MB dyes during 90 min under ultraviolet (UV) light irradiation.

采用三甲基辛基溴化铵（OTAB）和OTAB与柠檬酸的混合物作为燃料，通过固溶燃烧法制备了氧化锌（ZnO）粉。在高燃料含量（φ≥1）下直接形成具有纤锌矿结构的单相ZnO粉。混合燃料燃烧的ZnO粉的多孔微结构的比表面积在73–416 m ²的范围内/ g，其中随着燃料量的增加而增加。单一OTAB燃料合成的ZnO粉末是由长方体状的紧密团聚颗粒组成。通过漫反射光谱和光致发光光谱技术确定了ZnO粉末的光学和光催化性能与燃料类型和含量的关系。OTAB-柠檬酸混合燃料在φ= 1.5时获得的ZnO粉末在90分钟的紫外线（UV）照射下表现出最高的MB染料吸附（53％）和光降解（95％）效率。