Fig. 1From: Renewable Lignosulfonate-Assisted Synthesis of Hierarchical Nanoflake-Array-Flower ZnO Nanomaterials in Mixed Solvents and Their Photocatalytic PerformanceXRD patterns of ZnO (a) non-calcined (red line) (b) calcined (black line) at 500 °C for 2 hBack to article page