Shanghai 3S Technology's UV photochemical reaction instrument is a precision device that utilizes specific-wavelength ultraviolet light (250-360 nm) to drive chemical reactions. By transferring light energy to molecules, it enables them to transition from the ground state to an excited state, triggering bond cleavage and recombination to achieve efficient and controllable photocatalytic reactions.

Working Principle

Photochemical Reaction Basis: When ultraviolet light irradiates reactants or photocatalysts (e.g., TiO₂), molecular absorption of photons elevates electrons from low-energy to high-energy levels, forming excited-state molecules. These unstable molecules return to the ground state via bond breaking, new bond formation, or energy transfer, completing the chemical reaction.

Photocatalytic Mechanism: Upon absorbing light energy, the photocatalyst generates electron-hole pairs. These highly reactive species interact with water and oxygen to produce strong oxidizing agents like hydroxyl radicals (·OH), which effectively degrade organic pollutants or participate in synthesis reactions.

Functional Components

Light Source System: Equipped with deep UV LEDs providing precise 250-360 nm wavelength output.

Reaction Chamber: Fused with quartz reaction tubes featuring high optical transparency and corrosion resistance.

Temperature Control System: Integrated liquid-cooling system enables precise temperature regulation from -20°C to 80°C, ensuring stable reaction conditions.

Stirring System: Built-in high-strength magnetic stirrer (300-2500 rpm) ensures uniform mixing and full light exposure of reactants.

Control System: Microcomputer controller allows precise adjustment of power (0-15 W) and reaction time (0-99 hours), supporting independent multi-station control.

Product Features and Advantages

Precise Multi-Wavelength Control: 250-360 nm spectral range with customizable configurations, delivering up to 1000 mW/cm² light intensity and a light decay rate below 5% per year.

Smart Temperature Control: High-efficiency metal heat transfer components combined with external temperature devices achieve wide-range control (-20°C to 80°C), eliminating ambient temperature interference.

Modular Design: Compatible with standard reaction tubes (10/25/50 mL), NMR tubes, and customizable sizes.

Wide Application Range: Applicable to pharmaceutical synthesis, material preparation, wastewater treatment, photodegradation research, and life science fields, enabling high-efficiency and high-selectivity reactions.

Shanghai 3S Technology's photochemical reaction instrument standardizes the entire process of "light absorption-excitation-reaction-environmental control," providing a standardized experimental platform for photochemical research. This significantly enhances experimental efficiency and data reliability.