Figure 1
From: Two Sprayer CVD Synthesis of Nitrogen-doped Carbon Sponge-type Nanomaterials

Schematic representation of the chemical vapor deposition setup used to synthesize N-CSTNs. Samples are synthesized at 1020 °C. The resulting material was collected from the quartz tube (reactor) by scraping its inner walls and classifying the sample according to the region in the tubular furnace. The different regions are labeled as S1, S2, S3, S4, S5, and S6. Sprayer (A) contains an ethanol solution, whereas sprayer (B) contains a benzylamine solution. Both sprayers contain thiophene and ferrocene. More details on the precursor concentrations are given in the text.