Deconvolution of carbon silica templated thin film using ES40 and P123 via rapid thermal processing method

Abstract

This work aims to fabricate silica-P123 (Pluronic-123) xerogels and investigates the vibrational carbon groups of ES40-P123 xerogels using FTIR analysis and fityk software. In this work, ES40 (ethyl silicate 40) was used as the silica precursor, and P123 as the template agent. Meanwhile, HNO3 and NH3 take a role as acid and base catalyst. The combination of silica materials between of ES40 and P123 as an organic polymer was prepared via sol–gel process. The obtained of silica-P123 sol derived from ES40 was then dried at 33.15 K for 172,800 s which named xerogel. The molar ratio for ES40: ethanol: nitric acid: ammonia: aquadest: P123 were 1: 38: 0.0007: 0.003: 5: 0.0207, respectively. Rapid Thermal Processing (RTP) technique is favorable for calcination at 723 K for 3600 s. Then, FTIR analysis was applied to analyze the xerogel samples. The wavelength results were 800; 975; and 1080 (x10-2 m−1) for Si-C; Si-OH, and Si-O-Si, respectively. In addition, the area of pure ES40 for Si-O = 9.21 × 10−5; Si-O-Si = 1.0344 × 10−3; Si-C = 8.28 × 10−5; and for ES40-P123 template were 9.51 × 10−5; 1.0264 × 10−3; 8.10 × 10−5 in m2 unit. Hence, the peak area ratios of pure ES40 and ES40-P123 template were 0.089 and 0.093, respectively. It is clearly shown that the polymerisation by templating carbon groups into silica matrices was successfull and promising potential to apply in RTP technique as well as to then fabricate organosilica membrane for water desalination.