Boosting electromagnetic enhancement for detection of non-adsorbing analytes on semiconductor SERS substrates

Recent progress in SERS monitoring of photocatalytic reactions

“…[61][62][63][64][65] We made a breakthrough for the detection of nonchemisorbing volatile organic compounds (VOC) such as toluene through constructing a core-shell structured ZnO@ZIF-8. 70 Using this strategy, the electromagnetic enhancing capability of submicrometer-sized ZnO can be strengthened since the MOF shell can play a role in extending the enhancement region of the electromagnetic field generated around the ZnO surface and in enriching analyte molecules, thereby enabling the successful detection of non-chemisorbing VOC molecules.…”

Enhancing charge transfer in a W18O49/g-C3N4 heterostructure via band structure engineering for effective SERS detection and flexible substrate applications

“…[5][6][7][8] In comparison to noble metals, CM-based materials present higher selectivity, better stability, and uniformity. [9][10][11] In recent years, novel CM-based substrates have been proposed and utilized along with the development of new synthetic techniques. Some CM-based substrates such as graphene, metal-organic frameworks (MOFs), and semiconductor metal oxides have been investigated and successfully employed as alternatives to noble metals for monitoring various targets.…”

Surface-Area Enhanced Raman Spectroscopy of DNA in Porous Silica: A Quantitative and Reproducible Alternative to Plasmonic-Based SERS

“…This concept was the motivation of Fleischmann et al when they roughened silver electrodes to increase their surface area and unknowingly detected plasmonic-enhanced Raman scattering for the first time. Indeed, the greater surface area of nanostructured metal or semiconductor materials has been employed to increase the sensitivity of plasmonic SERS measurements. In our case, however, we immobilize DNA on the interior surfaces of porous silica, a purely dielectric material that is not a metal or semiconductor.…”