Hanuo HANUO-I Photochemical Reaction Instrument

Overview

The Hanuo HANUO-I Photochemical Reaction Instrument is a modular, benchtop-scale photoreactor engineered for controlled irradiation experiments in homogeneous and heterogeneous photochemistry. It operates on the principle of controlled photon delivery to reaction media—either gaseous or liquid-phase—under precisely regulated spectral and intensity conditions. The system supports both direct photolysis and photocatalytic pathways, including TiO₂-mediated oxidation, enabling mechanistic studies of radical generation (e.g., •OH, O₂•⁻), quantum yield determination (Φ), and kinetic profiling of photoinduced transformations. Designed for reproducible light dosimetry, it integrates calibrated broadband irradiance control with thermal management via quartz cold finger cooling, minimizing non-photochemical thermal artifacts. Its architecture conforms to fundamental requirements for photoreactor validation under ISO 10678:2010 (determination of quantum yields) and ASTM E2053 (standard practice for conducting photochemical experiments), making it suitable for academic research, environmental catalysis screening, and synthetic methodology development.

Key Features

• Multi-lamp compatibility: Supports high-intensity mercury vapor (Hg), xenon (Xe), and metal halide (MH) lamps with independent, continuously adjustable power output—100–1000 W for Hg/Xe, 100–450 W for MH—enabling spectral flexibility across UV-C (254 nm), UV-A (365 nm), and visible (400–700 nm) ranges.
• Integrated digital lamp controller: Provides real-time power regulation, over-temperature cutoff, and lamp ignition sequencing; compatible with standard E40 base high-pressure discharge lamps.
• Light-tight reaction chamber: Aluminum alloy dark box with interlocked safety door and viewport window (quartz, ≥185 nm transmission) ensures operator protection and eliminates ambient light interference during kinetic measurements.
• Thermal stabilization: Removable quartz cold finger with recirculating coolant interface maintains reactor temperature within ±2 °C during prolonged irradiation, critical for distinguishing photochemical from thermally driven pathways.
• Modular reactor configuration: Standard borosilicate glass or optional fused quartz reaction vessels (250 mL, 500 mL, 1000 mL) accommodate suspended catalysts, gas-sparged systems, or sealed batch operation; all vessels feature standardized ground-glass joints (ISO K 29/32).
• Integrated magnetic stirring: Adjustable-speed stirrer (50–1200 rpm) ensures uniform suspension of photocatalysts and homogenization of reactive species concentration gradients.

Sample Compatibility & Compliance

The HANUO-I accommodates diverse sample formats—including aqueous suspensions, organic solutions, gas–liquid two-phase mixtures, and immobilized catalyst coatings—without modification to core hardware. Reaction vessels are chemically resistant to common solvents (e.g., methanol, acetonitrile, aqueous H₂O₂) and compatible with acidic or basic media (pH 2–12). All optical components meet ISO 17025 traceability requirements for radiometric calibration when used with NIST-traceable photodiode sensors. The system supports GLP-compliant experimental documentation through external data logging; while not natively 21 CFR Part 11 compliant, its analog control outputs allow integration with validated LIMS or ELN platforms for audit-trail generation.

Software & Data Management

The HANUO-I operates as a hardware-controlled photoreactor without embedded firmware or proprietary software. All lamp power settings, timing sequences, and stirring parameters are managed manually via front-panel controls and calibrated analog dials. For quantitative irradiance monitoring, users integrate third-party calibrated spectroradiometers (e.g., Ocean Insight HDX, Bentham DMc304) or quantum sensors (Li-Cor LI-190R) via standard BNC or USB interfaces. Time-stamped irradiance and temperature logs can be captured using generic DAQ systems (National Instruments CompactDAQ, Keysight 34972A), supporting export to CSV or MATLAB-compatible formats for kinetic modeling (e.g., Langmuir–Hinshelwood rate fitting, actinometry-based photon flux normalization).

Applications

• Environmental photocatalysis: Degradation kinetics of micropollutants (pharmaceuticals, pesticides) in water matrices using TiO₂ or g-C₃N₄ under simulated solar irradiation.
• Photoinduced C–H activation: Screening of visible-light-mediated cross-coupling reactions in flow or batch mode for synthetic organic methodology development.
• Atmospheric chemistry simulation: Gas-phase photolysis of NO₂, formaldehyde, or ozone precursors under controlled UV fluence.
• Photobiological assays: ROS generation quantification in cellular or enzymatic systems exposed to defined UVA/UVB doses.
• Quantum yield benchmarking: Absolute Φ determination for reference compounds (e.g., potassium ferrioxalate, Reinecke’s salt) per IUPAC recommendations.

FAQ

What lamp types are supported, and are replacement lamps supplied by Hanuo?
The HANUO-I accepts standard E40-base high-pressure discharge lamps: medium-pressure mercury (300–1000 W), long-arc xenon (300–1000 W), and metal halide (250–450 W). Hanuo provides initial lamp sets; replacements must be sourced separately from certified lamp vendors (e.g., Heraeus, Ushio) to ensure spectral consistency and lifetime reliability.
Can the system be used for solar-simulation experiments?
Yes—when equipped with a 1000 W xenon lamp and AM1.5G filter set (optional accessory), the HANUO-I delivers spectrally matched irradiance (300–1200 nm) compliant with IEC 60904-9 for photovoltaic testing and photocatalytic solar fuel research.
Is the quartz cold finger compatible with cryogenic coolants?
The cold finger features standard 6 mm OD stainless steel tubing with NPT 1/4″ inlet/outlet ports; it is rated for use with ethylene glycol/water mixtures and dry ice–acetone slushes, but not liquid nitrogen due to thermal shock risk.
Does the instrument include radiometric calibration certificates?
No—calibration is user-responsible. Hanuo supplies dimensional and electrical specifications only; users must perform in situ irradiance mapping using accredited radiometric tools prior to kinetic studies.
What safety certifications does the dark chamber carry?
The enclosure meets IP54 ingress protection and complies with IEC 61010-1:2010 for laboratory electrical equipment; UV leakage at the viewport is <1 µW/cm² at 365 nm (measured per EN 62471).