In this article, the synthesis procedure and sensing properties toward acetone of rGO-HM-SnO2/Zn2SnO4 composites with a hollow mesoporous structure are presented comprehensively. The rGO-HM-SnO2/Zn2SnO4 heterojunction structure is prepared through a self-sacrificial template strategy with a concise acid-assisted etching method. The as-prepared hollow mesoporous architectures are investigated by SEM, TEM, and HRTEM. The phase structure and valence state are also characterized by XRD and XPS, respectively. It is obvious that the hollow mesoporous...
