In-situ photocatalysis monitoring system based on surface-enhanced raman scattering spectroscopy

An in-situ photocatalysis monitoring system based on surface-enhanced Raman Scattering (SERS) spectroscopy, wherein the in-situ photocatalysis monitoring system comprises a Raman excitation light source, a laser coupling lens, a narrow band filter, a total reflection mirror, a dichroic mirror, a focusing coupling lens, a SERS optical fiber probe, a liquid phase photocatalysis reactor, a photocatalytic light source, a Raman collection lens, and a spectrometer;

• the SERS optical fiber probe comprises a common detection part, and a first furcation part and a second furcation part each extending from a first end of the common detection part;
• and
• the Raman excitation light source is connected to the laser coupling lens through an input optical fiber;
• the narrow band filter is arranged on a transmission light path of the laser coupling lens;
• the total reflection mirror is arranged on a transmission light path of the narrow band filter;
• the dichroic mirror is arranged on a reflected light path of the total reflection mirror, and the dichroic mirror is arranged in parallel to the total reflection mirror;
• the focusing coupling lens is arranged on a reflected light path of the dichroic mirror;
• an extending end of the first furcation part is coupled with the focusing coupling lens;
• an extending end of the second furcation part is coupled with the photocatalytic light source;
• a second end of the common detection part is arranged inside the liquid phase photocatalysis reactor;
• and the Raman collection lens is arranged on a transmission light path of the dichroic mirror, and an emission end of the Raman collection lens is coupled with the spectrometer through an output optical fiber.