Single-Crystalline-Mesoporous TiN Nanosheets Free of Intrinsic Raman Scattering for Highly Sensitive Surface-Enhanced Raman Spectroscopy

M, excellent signal reproducibility, and remarkable durability in corrosive environments. A particularly valuable finding is that the SCM-TiN nanosheets themselves have no intrinsic Raman signals, which eliminates the background interference commonly associated with traditional nonmetallic substrates and thus provides a strategy for the design of high-performance SERS substrates.