Interaction of Photon with water

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Discussion Overview

The discussion revolves around the challenges of regulating temperature in a photoelectrochemical cell while maintaining the integrity of the light source, specifically concerning the interaction of photons with water and other materials in the setup.

Discussion Character

  • Technical explanation
  • Experimental/applied
  • Debate/contested

Main Points Raised

  • One participant, Jeff, inquires about using a water jacket to regulate temperature in a photoreactor and expresses concern about the potential loss of collimation of the light from a Xenon arc lamp due to multiple obstacles.
  • Another participant suggests that keeping the photoreactor cool typically involves immersion in a water bath or using coolant tubes, noting that a collimated beam can remain collimated through various media if it is narrow.
  • Jeff acknowledges the concern about photon attenuation and spreading due to intermediate materials and questions whether the collimation principle applies to both UV and visible light.
  • A later reply advises ensuring that the coolant is transparent to the incoming light or using a window to allow light admission.

Areas of Agreement / Disagreement

Participants express varying views on the effectiveness of different cooling methods and the impact of intervening materials on light transmission. There is no consensus on the best approach to maintain light quality while regulating temperature.

Contextual Notes

Participants have not provided specific details about the design of the photoreactor or the exact nature of the reactions, which may influence the effectiveness of the proposed solutions. The discussion also lacks resolution on the implications of using different types of light.

Who May Find This Useful

Researchers and practitioners involved in photoelectrochemical systems, particularly those focused on temperature regulation and light interaction in experimental setups.

ooiuniscience
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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
 
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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.
 
Simon Bridge said:
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 ;-)
 
You arrange for the coolant to be transparent to the incoming light or admit the light through a window.
 

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