{"id":{"repo_id":"calgary","oai_identifier":"oai:ucalgary.scholaris.ca:11023/1736"},"canonical_url":"https://search.dev.ndltd.org/etd/calgary/oai:ucalgary.scholaris.ca:11023/1736","repository":{"repo_id":"calgary","name":"University of Calgary","base_url":"https://ucalgary.scholaris.ca/server/oai/request"},"display":{"title":"Thermolysis Route for Accessing Amorphous Metal Sulfide Thin-Film Catalysts for the Hydrogen Evolution Reaction","abstract":"In this work, low temperature thermolysis of metal ethyl xanthates (M = Mo, Co, Fe, Ni) was used to prepare amorphous metal and mixed metal sulfide films on fluorine-doped tin oxide for the hydrogen evolution reaction (HER). Films prepared by dip-coating showed optimal coverage, as monitored by scanning electron microscopy, using high precursor solution concentrations and slow/fast dip-coating retraction rates with low/high volatility solvents. X-ray diffraction confirmed that the films are amorphous. Direct preparation of the active form of amorphous molybdenum disulfide (a-MoS2), proven by x-ray photoelectron spectroscopy, was done, exhibiting electrochemical activity consonant with activated a-MoS2 in the literature. The addition of cobalt and iron to a-MoS2 at an optimal composition of 3:1 Mo:M showed a slight enhancement to current densities. Amorphous iron and cobalt showed activity toward the HER. X-ray photoelectron spectroscopy confirmed the presence of metal sulfide and metal oxide species or homogeneous metal oxysulfide species.","abstract_html":"In this work, low temperature thermolysis of metal ethyl xanthates (M = Mo, Co, Fe, Ni) was used to prepare amorphous metal and mixed metal sulfide films on fluorine-doped tin oxide for the hydrogen evolution reaction (HER). Films prepared by dip-coating showed optimal coverage, as monitored by scanning electron microscopy, using high precursor solution concentrations and slow/fast dip-coating retraction rates with low/high volatility solvents. X-ray diffraction confirmed that the films are amorphous. Direct preparation of the active form of amorphous molybdenum disulfide (a-MoS2), proven by x-ray photoelectron spectroscopy, was done, exhibiting electrochemical activity consonant with activated a-MoS2 in the literature. The addition of cobalt and iron to a-MoS2 at an optimal composition of 3:1 Mo:M showed a slight enhancement to current densities. Amorphous iron and cobalt showed activity toward the HER. X-ray photoelectron spectroscopy confirmed the presence of metal sulfide and metal oxide species or homogeneous metal oxysulfide species.","abstract_has_math":false,"creators":["Emara, Jennifer Salah"],"institution":"Graduate Studies","degree_name":"Master of Science (MSc)","degree_level":null,"degree_discipline":"Chemistry","degree_department":null,"school":null,"contributors":[],"advisors":["Trudel, Simon","Berlinguette, Curtis Paul"],"committee_chairs":[],"committee_members":[],"year":2014,"date_issued":"2014-09-05","date_published":"2014-09-05","updated_at":"2026-07-24T01:30:22Z","subjects":["Chemistry--Physical","Energy","Materials Science"],"languages":["eng"],"rights":["University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission."],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier.doi","label":"DOI","values":["http://dx.doi.org/10.11575/PRISM/28312"],"render_values":[{"text":"http://dx.doi.org/10.11575/PRISM/28312","href":"http://dx.doi.org/10.11575/PRISM/28312","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/11023/1736","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Trudel, Simon","Berlinguette, Curtis Paul"]},{"key":"dc:creator","label":"Author","values":["Emara, Jennifer Salah"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2014-09-05T17:37:08Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2014-11-17T08:00:44Z"]},{"key":"dc:date.issued","label":"Date","values":["2014-09-05"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Calgary"]},{"key":"dc:type","label":"Dc Type","values":["master thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Chemistry"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science (MSc)"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Calgary"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Chemistry--Physical","Energy","Materials Science"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.doi","label":"DOI","values":["http://dx.doi.org/10.11575/PRISM/28312"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/11023/1736"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["In this work, low temperature thermolysis of metal ethyl xanthates (M = Mo, Co, Fe, Ni) was used to prepare amorphous metal and mixed metal sulfide films on fluorine-doped tin oxide for the hydrogen evolution reaction (HER). Films prepared by dip-coating showed optimal coverage, as monitored by scanning electron microscopy, using high precursor solution concentrations and slow/fast dip-coating retraction rates with low/high volatility solvents. X-ray diffraction confirmed that the films are amorphous. Direct preparation of the active form of amorphous molybdenum disulfide (a-MoS2), proven by x-ray photoelectron spectroscopy, was done, exhibiting electrochemical activity consonant with activated a-MoS2 in the literature. The addition of cobalt and iron to a-MoS2 at an optimal composition of 3:1 Mo:M showed a slight enhancement to current densities. Amorphous iron and cobalt showed activity toward the HER. X-ray photoelectron spectroscopy confirmed the presence of metal sulfide and metal oxide species or homogeneous metal oxysulfide species."]},{"key":"dc:title","label":"Title","values":["Thermolysis Route for Accessing Amorphous Metal Sulfide Thin-Film Catalysts for the Hydrogen Evolution Reaction"]}]}],"canonical_facts":{"dc:contributor.advisor":["Trudel, Simon","Berlinguette, Curtis Paul"],"dc:creator":["Emara, Jennifer Salah"],"dc:date.accessioned":["2014-09-05T17:37:08Z"],"dc:date.available":["2014-11-17T08:00:44Z"],"dc:date.issued":["2014-09-05"],"dc:description.abstract":["In this work, low temperature thermolysis of metal ethyl xanthates (M = Mo, Co, Fe, Ni) was used to prepare amorphous metal and mixed metal sulfide films on fluorine-doped tin oxide for the hydrogen evolution reaction (HER). Films prepared by dip-coating showed optimal coverage, as monitored by scanning electron microscopy, using high precursor solution concentrations and slow/fast dip-coating retraction rates with low/high volatility solvents. X-ray diffraction confirmed that the films are amorphous. Direct preparation of the active form of amorphous molybdenum disulfide (a-MoS2), proven by x-ray photoelectron spectroscopy, was done, exhibiting electrochemical activity consonant with activated a-MoS2 in the literature. The addition of cobalt and iron to a-MoS2 at an optimal composition of 3:1 Mo:M showed a slight enhancement to current densities. Amorphous iron and cobalt showed activity toward the HER. X-ray photoelectron spectroscopy confirmed the presence of metal sulfide and metal oxide species or homogeneous metal oxysulfide species."],"dc:identifier.doi":["http://dx.doi.org/10.11575/PRISM/28312"],"dc:identifier.uri":["http://hdl.handle.net/11023/1736"],"dc:language.iso":["eng"],"dc:publisher.institution":["University of Calgary"],"dc:rights":["University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission."],"dc:subject":["Chemistry--Physical","Energy","Materials Science"],"dc:title":["Thermolysis Route for Accessing Amorphous Metal Sulfide Thin-Film Catalysts for the Hydrogen Evolution Reaction"],"dc:type":["master thesis"],"thesis:degree_discipline":["Chemistry"],"thesis:degree_name":["Master of Science (MSc)"],"thesis:institution_name":["University of Calgary"]},"updated_at":"2026-07-24T01:30:22Z"}