Photoreduction of Iron(III) to Iron(0) Nanoparticles for Simultaneous Hydrogen Evolution in Aqueous Solution. Issue 7 (2nd July 2014)

• Record Type: Journal Article
• Authors: Wang, Chuan‐Jun; Cao, Shuang; Qin, Biao; Zhang, Chen; Li, Ting‐Ting; Fu, Wen‐Fu
• Is Part Of: ChemSusChem. Volume 7:Issue 7(2014:Jul.)
• Page Start: 1924
• Page End: 1933
• Publication Date: 2014-07-02
• Subjects: Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201400065
• Languages: English
• ISSNs: 1864-5631

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Crystalline Fe nanoparticles were obtained with fluorescein (Fl) as the photosensitizer in triethylamine (TEA) or triethanolamine (TEOA) aqueous solution with FeCl₃ as the Fe precursor under bright visible‐light light‐emitting diode (LED) irradiation. Photoinduced electron transfer from excited state Fl* and Fl⁻ to Fe³⁺ produced the Fe nanoparticles, which served as the active catalyst for in situ photocatalytic hydrogen production with Fl and TEA or TEOA as the photosensitizer and electron donors, respectively, in the same system. Robust hydrogen production activities were observed under the Fe nanoparticle photoreduction conditions in basic solution, and tens of milliliters of hydrogen were obtained over prolonged LED irradiation. If inorganic support materials such as NH₂‐MCM‐41 or reduced graphene oxide were introduced, dispersed nanoparticles with different sizes and shapes were deposited on the supports, which led to variously enhanced hydrogen production activities. The relationships between the morphologies of the Fe/H₂N‐MCM‐41 or Fe/graphene composites generated in situ and the hydrogen production activities were investigated systematically.</p> </abstract>