Activated carbon loaded gold nanorod surface enhanced Raman detection material and preparation method thereof
A surface-enhanced Raman and material detection technology, which is applied in the analysis of materials, Raman scattering, and material excitation analysis, can solve problems such as insufficient stability of detection results, achieve enhanced surface plasmon resonance effects, and improve accuracy and sensitivity , the effect of broad market prospects
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Embodiment 1
[0030] (1) Preparation of activated carbon
[0031] Weigh 200g of coconut shells with a particle size of 0.1 to 0.2 mm and put them in N 2 The biomass carbon was obtained by calcining at 500 °C for 2 h in an atmosphere furnace with a protective atmosphere, and then 150 g of KOH was weighed, dissolved in 4 L of deionized water, stirred with the calcined biomass carbon for 1 h, and then placed at 80 °C for blasting. Dry in a drying box for 12 hours, and then put the KOH-adsorbed biomass carbon into N 2 Activated by roasting at 600 °C for 2 h in an atmosphere furnace as a protective atmosphere to obtain biomass activated carbon, which was finally washed three times with 5% hydrochloric acid and ultrapure water, and then placed in a blast drying oven at 80 °C for 12 h. , to obtain a biomass activated carbon carrier;
[0032] (2) Surface modification of activated carbon
[0033] Measure 200mL of the biomass activated carbon obtained in step (1) and place it in a plasma surface t...
Embodiment 2
[0041] (1) Preparation of activated carbon
[0042] Weigh 200g of coconut shells with a particle size of 0.1 to 0.2 mm and put them in N 2 The biomass carbon was obtained by roasting at 500 °C for 2 hours in an atmosphere furnace with a protective atmosphere. Then, 150 g of KOH was weighed, dissolved in 4 L of deionized water, stirred with the roasted biomass carbon for 1 hour, and then placed at 80 °C for blasting. Dry in a drying box for 12 hours, and then put the KOH-adsorbed biomass carbon into N 2 Activated by roasting at 600 °C for 2 h in an atmosphere furnace as a protective atmosphere to obtain biomass activated carbon, which was finally washed three times with 5% hydrochloric acid and ultrapure water, and then placed in a blast drying oven at 80 °C for 12 h. , to obtain a biomass activated carbon carrier;
[0043] (2) Surface modification of activated carbon
[0044] Measure 200mL of the biomass activated carbon obtained in step (1) and place it in a plasma surface...
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