Volcano Plot for Bimetallic Catalysts in Hydrogen Generation by Hydrolysis of Sodium Borohydride

Abstract

In the field of "hydrogen energy", sodium borohydride (NaBH 4 ) is a potential hydrogen carrier able to release H 2 by hydrolysis in the presence of a metal catalyst. Our laboratory experiment focuses on this. It is intended for thirdyear undergraduate students in order to have hands-on laboratory experience through the synthesis of Co−Cu catalysts, X-ray characterization, and catalytic tests to qualitatively illustrate the Sabatier principle (volcano plot). The experiments require minimal preparation and are simple and instructive. Students gain experience in handling H 2 and a better understanding of the current issues hindering the development of the "hydrogen economy".

Activation of the WS2 Inert Plane via W‐Site Regulation Promotes the H2 Evolution Reaction of the WS2/g–C3N4 Photocatalyst

“…As we know, the quantum confinement effect of the 2D nanosheets causes an enlarged bandgap and a blueshifted light absorption edge. [ 47 ] The scattering effect of the porous CNr rod shows an increased absorption of visible light, which is attributed to the light nanosheet assembling structure ( Figure a). [ 48 ] After loading W exp ‐WS on the CNr surface, the light absorption of the W exp ‐WS/CNr composites was further enhanced in the whole band, indicating that W exp ‐WS can promote solar energy utilization of W exp ‐WS/CNr composites.…”

Rehydrogenation of Sodium Borates to Close the NaBH4-H2 Cycle: A Review

“…Since the early 2000s, many efforts have been dedicated to the hydrolysis of NaBH 4 ; however, there is no consensus about the chemical structure of the by-product [21,22]. Although the majority of the published studies described sodium metaborate (NaBO 2 ) as the by-product of the reaction, several studies reported that the only by-product that forms is sodium tetrahydroxyborate (NaB(OH) 4 ) [21][22][23][24][25][26][27][28][29][30][31][32][33], since the solution is stabilized with pH beyond 11 [3]. Therefore, the appropriate equation would be written as follows:…”

“…There is a noteworthy lack of research in recycling, which is a key issue to close the NaBH 4 -H 2 cycle. Therefore, 217 research papers [11,17,20,23,24,[28][29][30][31]50,[52][53][54][55][56][57][58][59][60][61], published from 2014 up to the publication of this paper, were selected to understand the evolution of the research on "hydrogen from NaBH 4 hydrolysis" after the report by Demirci et al [21]. The selected articles were published in peer-reviewed international journals, and all the reviewtype articles and conference proceedings were discarded.…”

Catalytic Removal of Bromates from Water: A Hands-On Laboratory Experiment to Solve a Water Pollution Problem through Catalysis

“…Commonly, catalysis is defined as the increase of the chemical reaction rate, using an alternative pathway based on the incorporation of a small quantity of a substance, the catalysts, without being consumed . Catalysis is used in many industrial processes, improving their performance but also transforming them into more sustainable and environmental-friendly processes. − Due to both a noteworthy industrial magnitude and crucial sustainable strategy, catalysis should be incorporated and taught at any education level as one of the main fundamentals of Green Chemistry. − Although catalysis is already incorporated in most curricula of the main chemistry-oriented universities worldwide, most of the hands-on laboratory experiments are related to organic synthesis catalytic procedures (homogeneous catalysis). − Hereby we study a heterogeneous catalytic process for the removal of bromates as an example of hands-on catalytic laboratory experiments and real application of catalysis.…”