Improving the surface-enhanced Raman scattering activity of carbon nitride by two-step calcining

Abstract

The modified g-C3N4 substrates were prepared by a two-step calcining method. The morphologies and microstructures of modified g-C3N4 were successfully controlled. The modified g-C3N4-2 h + Ag substrate exhibited superior SERS activity.

Influence of g-C3N4 Precursors in g-C3N4/NiTiO3 Composites on Photocatalytic Behavior and the Interconnection between g-C3N4 and NiTiO3

“…Moreover, the higher weight loss of the uC and tC samples at 200 °C < T < T onset reveals that these samples contain a large amount of low-molecular-weight components (LMWC). After T onset points, weight loss drops to zero at T = 600–650 °C for pristine g-C 3 N 4 , which is in agreement with other reports. ,, However, the thermal stability in the composites tends to differ from pristine g-C 3 N 4 . The T onset values for the composites are tCNT (434 °C) > dCNT (411 °C) > mCNT (396 °C) > uCNT (264 °C).…”

“…After T onset points, weight loss drops to zero at T = 600−650 °C for pristine g-C 3 N 4 , which is in agreement with other reports. 25,39,46 However, the thermal stability in the composites tends to differ from pristine g-C 3 N 4 . The T onset values for the composites are tCNT (434 °C) > dCNT (411 °C) > mCNT (396 °C) > uCNT (264 °C).…”

A review on recent advances in selective and sensitive detection of heavy toxic metal ions in water using g-C3N4-based heterostructured composites

“…Note that the thermal stability of CN materials somewhat differs between different preparation methods, which may be due to different degrees of condensation and different packing motifs. 97 So the TGA results directly confirmed that the modified g-C 3 N 4 with a different calcining time possessed different degrees of polymerization, well consistent with the FT-IR results. Fig.…”

Multifunctional Ag-decorated g-C3N4 nanosheets as recyclable SERS substrates for CV and RhB detection

“…Consistent with the XRD analysis results, with increased calcination time the g-C 3 N 4 became atter. However, aer 2-3 h of heating, the g-C 3 N 4 went through partial re-aggregation and was then damaged by thermal effects, 58 as Fig. 4(f) demonstrates.…”