The issue’s scope is going to investigate the last achievements in photocatalyst, but not with the common methods. Organometallic complex compounds are a very strong method to synthesis different molecules with a different application, and synthesis nano-photocatalyst can be considered as a very modern application obtained from this method. The advantage of this method is unlimited such as obtaining nanoparticle at very low temperature, time, and obtaining with high purity. However, this topic has not been studied very well and it can be a unique subject. In addition, modifying photocatalyst, which works under visible light can prepare a better environment especially high-quality water by a very cheap method.

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