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Assembly of a Cost-Effective Anode Using Palladium Nanoparticles for Alkaline Fuel Cell Applications
Feliciano-Ramos, Ileana; Casan~as-Montes, Barbara; García-Maldonado, María M.; Menendez, Christian L.; Mayol, Ana R.; Díaz-Vazquez, Liz M.; Cabrera, Carlos R. – Journal of Chemical Education, 2015
Nanotechnology allows the synthesis of nanoscale catalysts, which offer an efficient alternative for fuel cell applications. In this laboratory experiment, the student selects a cost-effective anode for fuel cells by comparing three different working electrodes. These are commercially available palladium (Pd) and glassy carbon (GC) electrodes, and…
Descriptors: Science Instruction, Molecular Structure, Technology, Science Laboratories
Shaner, Sarah E.; Hooker, Paul D.; Nickel, Anne-Marie; Leichtfuss, Amanda R.; Adams, Carissa S.; de la Cerda, Dionisia; She, Yuqi; Gerken, James B.; Pokhrel, Ravi; Ambrose, Nicholas J.; Khaliqi, David; Stahl, Shannon S.; Schuttlefield Christus, Jennifer D. – Journal of Chemical Education, 2016
Electrochemical water oxidation is a major focus of solar energy conversion efforts. A new laboratory experiment has been developed that utilizes real-time, hands-on research to discover catalysts for solar energy conversion. The HARPOON, or Heterogeneous Anodes Rapidly Perused for Oxygen Overpotential Neutralization, experiment allows an array of…
Descriptors: Energy Conservation, Energy, Science Laboratories, Science Experiments
Aydin, Sevgi; Friedrichsen, Patricia M.; Boz, Yezdan; Hanuscin, Deborah L. – Chemistry Education Research and Practice, 2014
The purpose of this study was to examine experienced chemistry teachers' pedagogical content knowledge (PCK) for two different topics in chemistry to better understand how PCK is specific to topic, including whether all components of PCK are topic-specific and to what degree. To explore the topic-specific nature of PCK, we examined two experienced…
Descriptors: Chemistry, Pedagogical Content Knowledge, Science Instruction, Science Teachers
Byrd, Houston; Chapman, Blake E.; Talley, Christopher L. – Journal of Chemical Education, 2013
Prussian Blue (PB) is an excellent material as a sensor for electroinactive cations because of its electrochemical behavior and its zeolytic character. A simple 3-h laboratory designed for a quantitative analysis or an instrumental methods course is reported. This laboratory studies the transport of various cations into a PB-modified electrode…
Descriptors: Science Instruction, Chemistry, College Science, Undergraduate Study
Ibanez, Jorge G.; Finck-Pastrana, Adolfo; Mugica-Barrera, Alejandra; Balderas-Hernandez, Patricia; Ibarguengoitia-Cervantes, Martha E.; Garcia-Pintor, Elizabeth; Hartasanchez-Frenk, Jose Miguel; Bonilla-Jaurez, Cesar E.; Maldonado-Cordero, Casandra; Struck-Garza, Adelwart; Suberbie-Rocha, Felipe – Journal of Chemical Education, 2011
Copper(I) oxide photoresponsive layers are prepared on copper surfaces (e.g., U.S. pre-1982 pennies) by simple thermal, chemical, and electrochemical procedures. An easily measurable photovoltage (up to 100 mV) is obtained in each case under visible light illumination. (Contains 2 figures.)
Descriptors: Chemistry, Electronic Equipment, Science Experiments, Science Activities
Vidal-Iglesias, Francisco J.; Solla-Gullon, Jose; Rodes, Antonio; Herrero, Enrique; Aldaz, Antonio – Journal of Chemical Education, 2012
The goal of the present laboratory experiment is to deepen the understanding of the Nernst equation and some other concepts that are essential in electrochemistry. In this practical laboratory session, students first learn that the equilibrium potential of an electrode is related to the difference between two equilibrium inner electric potentials…
Descriptors: Chemistry, Science Instruction, College Science, Equations (Mathematics)
Tanimoto, Sachiko; Ichimura, Akio – Journal of Chemical Education, 2013
A laboratory experiment for undergraduate students who are studying homogeneous and heterogeneous electron-transfer reactions is described. Heterogeneous or electrode reaction kinetics can be examined by using the electrochemical reduction of three Fe[superscript III]/Fe[superscript II] redox couples at platinum and glassy carbon disk electrodes.…
Descriptors: Science Instruction, Science Experiments, Laboratory Experiments, College Science
Gislason, Eric A.; Craig, Norman C. – Journal of Chemical Education, 2013
Starting with the fundamental and general criterion for a spontaneous process in thermodynamics, delta S[subscript tot] greater than or equal to 0, we review
its relationships to other criteria, such as delta A and delta G, that have
limitations. The details of these limitations, which can be easily overlooked, are carefully explicated. We also…
Descriptors: Science Instruction, College Science, Thermodynamics, Scientific Concepts
Lu, Xu; Anariba, Franklin – Journal of Chemical Education, 2014
A hands-on activity based on general electrochemistry concepts with the aim at introducing design science elements is presented. The main goals of the activity are to reinforce electrochemical principles while fostering innovation in the students through the assembly and optimization of a voltaic device and subsequent evaluation by powering…
Descriptors: Chemistry, Science Education, Hands on Science, Science Activities
Ibanez, Jorge G.; Balderas-Hernandez, Patricia; Garcia-Pintor, Elizabeth; Barba-Gonzalez, Sandy Nohemi; Doria-Serrano, Ma. del Carmen; Hernaiz-Arce, Lorena; Diaz-Perez, Armando; Lozano-Cusi, Ana – Journal of Chemical Education, 2011
Many soils throughout the world are contaminated with metal salts of diverse toxicity. We have developed an experiment to demonstrate the removal of a metal from an insoluble surrogate soil pollutant, CuCO[subscript 3] multiplied by Cu(OH)[subscript 2], by complexation followed by the simultaneous electrochemical recovery of the ligand (i.e.,…
Descriptors: Laboratory Experiments, Metallurgy, Soil Science, Pollution
Inamdar, Shaukatali N.; Bhat, Mohsin A.; Haram, Santosh K. – Journal of Chemical Education, 2009
A reference electrode is one of the prerequisites of electrochemical investigations. Many electrodes are commercially available but are expensive and prone to accidental breakage by students. Here we report a simple, easy-to-fabricate, inexpensive, reliable, unbreakable, and reproducible Ag/AgCl reference electrode. The empty barrel of a…
Descriptors: Undergraduate Students, Chemical Engineering, Laboratory Equipment, Laboratory Experiments
Zaccardi, Margot J.; Winkelmann, Kurt; Olson, Joel A. – Journal of Chemical Education, 2010
A first-year laboratory experiment that utilizes concepts of electrochemical tip etching for scanning tunneling microscopy (STM) is described. This experiment can be used in conjunction with any STM experiment. Students electrochemically etch gold STM tips using a time-efficient method, which can then be used in an instructional grade STM that…
Descriptors: Chemistry, Laboratory Equipment, College Freshmen, Science Experiments
Klara, Kristina; Hou, Ning; Lawman, Allison; Wu, Liheng; Morrill, Drew; Tente, Alfred; Wang, Li-Qiong – Journal of Chemical Education, 2014
A simple, affordable hydrogen proton exchange membrane (PEM) fuel cell laboratory was developed through a collaborative effort between faculty and undergraduate students at Brown University. It has been incorporated into the introductory chemistry curriculum and successfully implemented in a class of over 500 students per academic year for over 3…
Descriptors: Chemistry, Introductory Courses, Cost Effectiveness, Program Development
Preparation of Conducting Polymers by Electrochemical Methods and Demonstration of a Polymer Battery
Goto, Hiromasa; Yoneyama, Hiroyuki; Togashi, Fumihiro; Ohta, Reina; Tsujimoto, Akitsu; Kita, Eiji; Ohshima, Ken-ichi – Journal of Chemical Education, 2008
The electrochemical polymerization of aniline and pyrrole, and demonstrations of electrochromism and the polymer battery effect, are presented as demonstrations suitable for high school and introductory chemistry at the university level. These demonstrations promote student interest in the electrochemical preparation of conducting polymers, where…
Descriptors: Plastics, Molecular Structure, Student Interests, Chemistry
Dabke, Rajeev B.; Gebeyehu, Zewdu; Padelford, Jonathan – Journal of Chemical Education, 2012
A directed study for the undergraduate physical chemistry laboratory for determining the transference number of H[superscript +](aq) using a modified moving boundary method is presented. The laboratory study combines Faraday's laws of electrolysis with mole ratios and the perfect gas equation. The volume of hydrogen gas produced at the cathode is…
Descriptors: Chemistry, Science Instruction, Science Laboratories, College Science