Interaction of Photon with water

[ooiuniscience]

Dear all respected expert/collegues,

I'm setting out a photoelectrochemical cell. I'm facing problem to regulate temperature in my photoreactor durng reaction.

Can i just dip the photoreactor inside a big water jacket?
But i wondering incoming photon or light supplied by my Xenon arc lamp become uncollimated after it pass through so many obstacles (consisted fo wall of water jacket which is fabricated flat quartz-made window, followed by flowing water that circulating inside the water jacket then strike onto window of quartz-made photoelectrochemical cell, and finally just reach my thin film inside the photoelectrochemical cell.

P/s advice me on this :-)

Thanks for your fruitful input

Jeff

 

[Simon Bridge]

Welcome to PF;
What you can do with the photoreactor depends on it's design and what sort of reactions you want to take place.

Keeping it cool would normally involve immersing it in a water bath - or running coolant in tubes around (or through) it.

In general, a collimated beam remains collimated through a range of media provided the beam is narrow.
Intervening material can attenuate and spread the beam ... depending on details not supplied.
Since this is of concern, you should test your rig for it's performance and adjust your experiment design accordingly.

 

[ooiuniscience]

Welcome to PF;
What you can do with the photoreactor depends on it's design and what sort of reactions you want to take place.

Keeping it cool would normally involve immersing it in a water bath - or running coolant in tubes around (or through) it.

In general, a collimated beam remains collimated through a range of media provided the beam is narrow.
Intervening material can attenuate and spread the beam ... depending on details not supplied.
Since this is of concern, you should test your rig for it's performance and adjust your experiment design accordingly.

Hi Simon,
Greeting to you! :)
Yaya, you are right. The major concern is the attention matter due to hampering of the photon with intermediate medium before it strike into my sample. If use coolant, the transmission would be reduced significantly as good collant will have low transmission.

For "a collimated beam remains collimated through a range of media provided the beam is narrow", is it works for UV and visible light bc i tend to harness both of this light to excite my substrate.

However, really thanks for your inputs ;-)

 

[Simon Bridge]

You arrange for the coolant to be transparent to the incoming light or admit the light through a window.

 

[sardar]

Dear Jeff,

Thank you for reaching out about your photoelectrochemical cell and the issue you are facing with temperature regulation. It is understandable that you are considering using a water jacket to regulate the temperature, but it is important to consider the potential effects on the interaction of photons with water.

Water is known to have a strong absorption of light in the ultraviolet and infrared regions, but it is relatively transparent in the visible region. This means that the photons emitted by your Xenon arc lamp, which are in the visible range, should not be significantly affected by passing through the water jacket and reaching your thin film. However, it is important to note that the more obstacles the light encounters, the higher the chance of scattering and diffraction, which can affect the collimation of the light.

You may also want to consider the potential effects of the circulating water on the window of your photoelectrochemical cell. Depending on the flow rate and turbulence, the water may cause distortions or variations in the thickness of the water layer on the window, which can also affect the collimation and intensity of the light reaching your thin film.

In summary, while using a water jacket may be a viable option for temperature regulation, it is important to carefully consider its potential effects on the interaction of photons with water and the resulting collimation and intensity of the light reaching your thin film. It may be beneficial to conduct some experiments or simulations to determine the potential impact before implementing this solution.

I hope this helps and I wish you success in your research.

Best,