BEGIN:VCALENDAR VERSION:2.0 METHOD:PUBLISH PRODID:-//Missouri State University/Calendar of Events//EN CALSCALE:GREGORIAN X-WR-TIMEZONE:America/Chicago BEGIN:VTIMEZONE TZID:America/Chicago BEGIN:DAYLIGHT TZOFFSETFROM:-0600 TZOFFSETTO:-0500 DTSTART:20070311T020000 RRULE:FREQ=YEARLY;BYMONTH=3;BYDAY=2SU TZNAME:CDT END:DAYLIGHT BEGIN:STANDARD TZOFFSETFROM:-0500 TZOFFSETTO:-0600 DTSTART:20071104T020000 RRULE:FREQ=YEARLY;BYMONTH=11;BYDAY=1SU TZNAME:CST END:STANDARD END:VTIMEZONE BEGIN:VEVENT UID:857ebd5d-4ea1-44fb-b581-5dce626220c5.218545@calendar.missouristate.edu CREATED:20211108T174842Z LAST-MODIFIED:20211108T174842Z LOCATION:Kemper Hall 206 SUMMARY:PAMS Seminar: "Controlling Three Dimensional Morphology of Nonprec ious Metal-Based Nanostructures" by Dr. Jingyi Chen DESCRIPTION:Dr. Jingyi ChenDepartment of Chemistry & BiochemistryUniversit y of Arkansas\n\n\nAbstract:Controlling the three dimensional (3-D) morph ology of nonprecious metal nanostructures is important for understanding the structure-property-performance relationship\, but challenging to achi eve due to their highly-reactive nature. In turn\, the high reactivity of nonprecious metals opens up the possibilities to use them as templates f or access to well-defined hollow nanostructures or to convert them into c orresponding metal compound nanostructures. In this presentation\, I will take Cu as an example to illustrate the research progress on the shape-c ontrolled synthesis of nonprecious metal nanostructures in our laboratory . The metallic form of Cu exhibits a number of unique properties includin g distinct optical properties in the visible region. However\, once metal Cu is oxidized\, their unique properties will diminish. Through surface chemistry\, the oxidation of Cu could be prevented to some degree as moni toring by its optical properties. On the other hand\, Cu can be used as t emplates to synthesize well-defined hollow nanostructures and to convert into Cu compound nanostructures. These new nanostructured materials provi de more tools for new discovery. I will share some interesting findings o n the structural sensitivity of Cu2S nanoplates under electron beam irrad iation and elucidate the possible mechanism and pathway of the reversible structural changes. Furthermore\, I will extend the discussion to the sy nthesis of other nonprecious metals\, the Ni-Fe-based nanostructures for the oxygen evolution reaction. This study highlights the importance of th e effects of 3-D morphology\, composition\, and crystallinity on the elec trocatalytic activity and stability of nanocatalysts.\n\n\nThis seminar w ill be in Kemper 206. X-ALT-DESC;FMTTYPE=text/html:<html><head><title></title></head><body><p><b >Dr. Jingyi Chen</b><br><b>Department of Chemistry &amp\; Biochemistry</b ><br><b>University of&nbsp\;Arkansas</b></p>\n<p>Abstract:<br>Controlling the three dimensional (3-D) morphology of nonprecious metal nanostructur es is important for understanding the structure-property-performance rela tionship\, but challenging to achieve due to their highly-reactive nature . In turn\, the high reactivity of nonprecious metals opens up the possib ilities to use them as templates for access to well-defined hollow nanost ructures or to convert them into corresponding metal compound nanostructu res. In this presentation\, I will take Cu as an example to illustrate th e research progress on the shape-controlled synthesis of nonprecious meta l nanostructures in our laboratory. The metallic form of Cu exhibits a nu mber of unique properties including distinct optical properties in the vi sible region. However\, once metal Cu is oxidized\, their unique properti es will diminish. Through surface chemistry\, the oxidation of Cu could b e prevented to some degree as monitoring by its optical properties. On th e other hand\, Cu can be used as templates to synthesize well-defined hol low nanostructures and to convert into Cu compound nanostructures. These new nanostructured materials provide more tools for new discovery. I will share some interesting findings on the structural sensitivity of Cu2S na noplates under electron beam irradiation and elucidate the possible mecha nism and pathway of the reversible structural changes. Furthermore\, I wi ll extend the discussion to the synthesis of other nonprecious metals\, t he Ni-Fe-based nanostructures for the oxygen evolution reaction. This stu dy highlights the importance of the effects of 3-D morphology\, compositi on\, and crystallinity on the electrocatalytic activity and stability of nanocatalysts.</p>\n<p>This seminar will be in Kemper 206.</p></body></ht ml> DTSTART;TZID=America/Chicago:20211209T160000 DTEND;TZID=America/Chicago:20211209T170000 SEQUENCE:0 URL:https://physics.missouristate.edu/seminars.htm CATEGORIES:Public,Alumni,Current Students,Faculty,Future Students,Staff END:VEVENT END:VCALENDAR