Hydrogen storage performance of palladium nanoparticles decorated graphitic carbon nitride. (2nd March 2015)

• Record Type: Journal Article
• Authors: Nair, Asalatha A.S.; Sundara, Ramaprabhu; Anitha, N.
• Is Part Of: International journal of hydrogen energy. Volume 40:Number 8(2015)
• Page Start: 3259
• Page End: 3267
• Publication Date: 2015-03-02
• Subjects: Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2014.12.065
• Languages: English
• ISSNs: 0360-3199

Abstract

<abstract xml:lang="en" abstract-type="author" id="abs0010"> <title id="sectitle0010">Abstract</title> <sec> <p id="abspara0010">Pd on nitrogen rich carbon material g-C<sub>3</sub>N<sub>4</sub> has been synthesized by a simple cost-effective method. From the study of the hydrogen storage properties of host g-C<sub>3</sub>N<sub>4</sub> matrix and Pd-g-C<sub>3</sub>N<sub>4</sub> by pressure reduction method using Sievert's apparatus in the ranges 0.1 ≤ <inline-formula><alternatives><inline-graphic xlink:href="ark:/27927/pgh3x6k8vzx" xlink:type="simple" xmlns:xlink="http://www.w3.org/1999/xlink" /><mml:math altimg="si1.gif" overflow="scroll" id="d13e309" xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>P</mml:mi><mml:mrow><mml:msub><mml:mtext>H</mml:mtext><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:msub></mml:mrow></mml:math></alternatives></inline-formula>(MPa) ≤ 4 and 0 ≤ T(°C) ≤ 100, it has been demonstrated that the hydrogen storage capacity of Pd-g-C<sub>3</sub>N<sub>4</sub> reaches 2.6 wt% at 25 °C and 4 MPa. At room temperature, an increase of 66% in the hydrogen uptake capacity is accounted by Pd nanoparticles (Pd-NPs) decoration over host g-C<sub>3</sub>N<sub>4</sub> matrix, clearly demonstrating the hydrogen spillover process. The good dispersion of Pd-NPs over host g-C<sub>3</sub>N<sub>4</sub> matrix and strengthened interaction between the host g-C<sub>3</sub>N<sub>4</sub> matrix and Pd-NPs catalyze the dissociation of hydrogen molecules and subsequent migration of hydrogen atoms to the host g-C<sub>3</sub>N<sub>4</sub> matrix due to spill over mechanism. From the present study, it can be concluded that the nexus between the catalyst support and catalyst particles results in the high hydrogen uptake capacity.</p> </sec> </abstract>