BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:America/Los_Angeles BEGIN:DAYLIGHT DTSTART:20240310T030000 TZOFFSETFROM:-0800 TZOFFSETTO:-0700 RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3 TZNAME:PDT END:DAYLIGHT BEGIN:STANDARD DTSTART:20241103T010000 TZOFFSETFROM:-0700 TZOFFSETTO:-0800 RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11 TZNAME:PST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20240601T191151Z UID:85F4617F-7A09-423F-9A2D-1196518F6FA9 DTSTART;TZID=America/Los_Angeles:20240531T153000 DTEND;TZID=America/Los_Angeles:20240531T163000 DESCRIPTION:The urgent need to address climate change is recognised globall y with Australia adopting a net zero emissions target by 2050 and commitme nts to reduce carbon emissions by 2030. The adoption of hydrogen as a subs titute for carbon-containing fossil fuels would prevent emissions of green house gases. However\, hydrogen is itself an indirect greenhouse gas and a ny leakage of hydrogen in the atmosphere because of fugitive emissions fro m a hydrogen economy will impact the climate\, partially offsetting the cl imate benefits of a reduction in CO2. Hydrogen is a volatile\, and odorles s gas with relatively small molecular size and low viscosity\; thus\, hydr ogen systems are highly prone to leakage. As such\, there is an urgent nee d to build capacity to detect and minimise fugitive hydrogen emissions to the environment. To address the risk of hydrogen fugitive emissions and le aks\, robust\, reliable\, real-time\, power efficient\, and scalable sensi ng and leak detection technologies\, including advanced hydrogen gas senso rs should be employed. Currently many different types of hydrogen sensor a re commercially available or in development. However\, to meet the demands of an evolving future hydrogen economy\, ongoing research has focused on continuously enhancing sensitivity\, selectivity\, response time\, low det ection limit and reliability in addition to reducing sensor size\, cost\, and power consumption. We have developed innovative gas sensing technologi es via synthesising hybrid photoactive nanomaterials using facile chemical methods. These nanomaterials include Pd-TiO2 hollow nanospheres\, rGO-Pd- TiO2 and Pd-TiO2 solid nanospheres that have shown promising results to de tect hydrogen gas at room or low operating temperature (i.e.\, low power r equirements) with high sensitivity and selectivity and fast response (with in seconds) by using photoexcitation. This talk discusses benefits of nano material hybridisation and photoexcitation to hydrogen gas sensing\, the u nderlying sensing mechanisms\, and strategies to overcome current limitati ons.\n\nSpeaker(s): Mahnaz\n\nRoom: 10704\, Bldg: Applied Sciences Buildin g\, ASB 10704\, Simon Fraser Unviersity - Burnaby\, Burnaby\, British Colu mbia\, Canada\, V5A 0A7\, Virtual: https://events.vtools.ieee.org/m/42011 9 LOCATION:Room: 10704\, Bldg: Applied Sciences Building\, ASB 10704\, Simon Fraser Unviersity - Burnaby\, Burnaby\, British Columbia\, Canada\, V5A 0 A7\, Virtual: https://events.vtools.ieee.org/m/420119 ORGANIZER:behraad@ieee.org SEQUENCE:11 SUMMARY:Innovative Sensing Technology for Fugitive Hydrogen Emissions Detec tion URL;VALUE=URI:https://events.vtools.ieee.org/m/420119 X-ALT-DESC:Description: <br /><p class="MsoNormal" style="margin-bottom: 6. 0pt\; line-height: normal\;"><span lang="EN-AU" style="mso-fareast-font-fa mily: 'Times New Roman'\; mso-bidi-font-family: Calibri\; mso-bidi-theme-f ont: minor-latin\; mso-fareast-language: EN-AU\;">The urgent need to addre ss climate change is recognised globally with Australia adopting a net zer o emissions target by 2050 and commitments to reduce carbon emissions by 2 030. The adoption of hydrogen as a substitute for carbon-containing fossil fuels would prevent emissions of greenhouse gases. </span><span lang="EN- AU" style="mso-bidi-font-family: Calibri\; mso-bidi-theme-font: minor-lati n\;">However\, hydrogen is itself an indirect greenhouse gas and a</span>< span lang="EN-AU" style="mso-fareast-font-family: 'Times New Roman'\; mso- bidi-font-family: Calibri\; mso-bidi-theme-font: minor-latin\; mso-fareast -language: EN-AU\;">ny leakage of hydrogen in the atmosphere because of fu gitive emissions from a hydrogen economy will impact the climate\, partial ly offsetting the climate benefits of a reduction in CO<sub>2</sub>.</span ><span lang="EN-AU" style="mso-bidi-font-family: Calibri\; mso-bidi-theme- font: minor-latin\;"> </span><span lang="EN-AU" style="mso-fareast-font-fa mily: 'Times New Roman'\; mso-bidi-font-family: Calibri\; mso-bidi-theme-f ont: minor-latin\; mso-fareast-language: EN-AU\;">Hydrogen is a volatile\, and odorless gas with </span><span lang="EN-AU" style="mso-bidi-font-fami ly: Calibri\; mso-bidi-theme-font: minor-latin\; mso-font-kerning: 0pt\;"> relatively small molecular size and low viscosity\; thus\, hydrogen system s are highly prone to leakage. </span><span lang="EN-AU" style="mso-fareas t-font-family: 'Times New Roman'\; mso-bidi-font-family: Calibri\; mso-bid i-theme-font: minor-latin\; mso-fareast-language: EN-AU\;">As such\, there is an urgent need to build capacity to detect and minimise fugitive hydro gen emissions to the environment. To address the risk of hydrogen fugitive emissions and leaks\, robust\, reliable\,</span><span lang="EN-AU" style= "mso-bidi-font-family: Calibri\; mso-bidi-theme-font: minor-latin\;"> </sp an><span lang="EN-AU" style="mso-fareast-font-family: 'Times New Roman'\; mso-bidi-font-family: Calibri\; mso-bidi-theme-font: minor-latin\; mso-far east-language: EN-AU\;">real-time\, power efficient\, and scalable sensing and leak detection technologies\, including advanced hydrogen gas sensors should be employed. Currently many different types of hydrogen sensor are commercially available or in development. However\, to meet the demands o f an evolving future hydrogen economy\, ongoing research has focused on co ntinuously enhancing sensitivity\, selectivity\, response time\, low detec tion limit and reliability in addition to reducing sensor size\, cost\, an d power consumption. We have developed </span><span lang="EN-AU" style="ms o-bidi-font-family: Calibri\; mso-bidi-theme-font: minor-latin\;">innovati ve gas sensing technologies via synthesising hybrid photoactive nanomateri als using facile chemical methods. These nanomaterials include Pd-TiO<sub> 2 </sub>hollow nanospheres\, rGO-Pd-TiO<sub>2</sub> and Pd-TiO<sub>2</sub> solid nanospheres that have shown promising results to detect hydrogen ga s at room or low operating temperature (i.e.\, low power requirements) wit h high sensitivity and selectivity and fast response (within seconds) by u sing photoexcitation. This talk discusses benefits of nanomaterial hybridi sation and photoexcitation to hydrogen gas sensing\, the underlying sensin g <span style="mso-bidi-font-weight: bold\;">mechanisms\, and strategies t o overcome current limitations.</span> </span></p> END:VEVENT END:VCALENDAR