Nano Copper Oxide: From Flame Spray Pyrolysis to Photoelectrochemical Hydrogen Generation

Nanomaterials for Energy Applications
2010 AIChE Annual Meeting
AIChE Annual Meeting
November 11, 2010 - 7:00pm
A systematic experimental study of the synthesis of copper oxide nanoparticles and nanoporous films is presented. Powders were made by flame spray pyrolysis method with end applications in the photoeclectrochemical production of hydrogen. Inhibited particle growth was observed for prticles made from 1M copper nitrate (~22%w/w copper nitrate/solution) precursor using a liquid nitrogen gas cooling. The average diameter was 12 nm with a standard deviation of 5 nm. In comparison, particles formed without the additional cooling had an average diameter of 16 nm with a standard deviation of 9 nm. The particle morphology was near spherical and with the fractal dimension (Df) around 3. With a decrease in the precursor concentration to 0.48% w/w copper nitrate/solution, fractal-type aggregate with fractal dimension (Df) around 1.9 were obtained, which may be attributed to a transition to diffusion limitation aggregation for the lower precursor concentration. Downstream research into making copper oxide thin film electrodes for photoelectrochemical applications was done by spin coating and doctor blade casting of copper oxide nanoparticles suspension. The behavior of two film preparation process was compared by investigating surface morphology and resulting photocurrent density. In case of films made by spin coating, a uniform surface was observed, however, for films made by doctor blade casting, porous films with diameter of 400nm holes were obtained. The reason of forming different film morphology might be attributed to the evaporation rate of solvent during the drying process. Results for effects of morphology on photocurrent density will be present.
Professional Development Hours
0.5 PDHs
You will be able to download and print a certificate for these PDH credits once the content has been viewed. If you have already viewed this content, please click here to login.
Presenter(s): 

Would you like to access this content?

No problem. You just have to complete the following steps.

You have completed 0 of 2 steps.

  1. Log in

    You must be logged in to view this content. Log in now.

  2. Purchase Technical Presentation

    You must purchase this technical presentation using one of the options below.
    If you already purchased this content recently, please click here to refresh the system's record of ownerships.

Pricing

Credits 0.5 Use credits
List Price $25.00 Buy now
AIChE Members $15.00 Buy now
AIChE Undergraduate Student Members Free Free access
AIChE Graduate Student Members Free Free access
Related Topics: 
Skill Level: