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Professor Polshettiwar is based at the Prestigious Tata Institute of Fundamental Research (TIFR) (https://www.tifr.res.in). Prof Polshettiwar was educated at a number of institutions across India, before he moved to France, the United States, and Saudi Arabia. In 2013 he joined the TIFR.Prof Vivek is a Leading researcher in a nanotechnology. He runs a nano-catalysis Laboratory in TIFR, integrated into the Division of Chemical Sciences (DCS). He uses principles of nanochemistry to make new materials which have widespread applications.Prof Vivek has published many papers in international journals. His NANOCAT group (https://www.nanocat.co.in/ ) works on CO2 capture and conversion to tackle climate change through the development of novel nanomaterials for catalysis and solar energy harvestingProf. Vivek is a Fellow of the royal society of chemistry, UK. He has been rewarded an “Asian Rising Stars” at 15th Asian Chemical Congress (ACC), Singapore, by Nobel Laureate Professor Ei-ichi Negish . He has been recently awarded the 2022 IUPAC-CHEMRAWN VII Prize for Green Chemistry in recognition of his outstanding contributions to the field of green chemistry. Terms usedIf you’re not familiar with some of the terms used in this discussion – some key ones are described here for your reference:<ul><li>Artificial photosynthesis – A human-designed process that creates energy from Co2, water and sunlight, mimicking the same process which occurs naturally in plants.</li><li>Catalysis – Increasing the rate of a chemical reaction by adding a catalyst.</li><li>CO2 – Carbon Dioxide, one of the major greenhouse gases, and one of the molecules used by plants to create energy from photosynthesis.</li><li>Nano chemistry – Chemical process that rely on one or more component in a particle between 1 to 100 nm in diameter.</li><li>Solar photons – Particles of light emitted from the Sun.</li><li>Green Hydrogen – Hydrogen (H2) gener by renewable energy sources, or using low-carbon power.</li><li>Electrochemical water splitting – Splitting water molecules into component Hydrogen (H2) and Oxygen (O2) molecules by passing an electric current through the water.</li><li>Silica support – A (largely) non-reactive physical support medium for less robust chemically active compounds.</li><li>Urea – A chemical compound with the formula CO(NH2)2. Although useful in a wide range of industrial processes, 90% of global urea production goes into fertilizers.</li></ul> Our theme music is "Wholesome" by Kevin MacLeod (https://incompetech.com)Music from https://filmmusic.ioLicense: CC BY (<a href="http://creativecommons.org/licenses/by/4.0/">http://creativecommons.org/licenses/by/4.0/</a>) Connect with me (Paul) at <a href="https://www.linkedin.com/in/paulorange/">https://www.linkedin.com/in/paulorange/</a>H.E.L. group can be found at <a href="http://www.helgroup.com">www.helgroup.com</a> online,on LinkedIn at <a href="https://www.linkedin.com/company/hel-group/">https://www.linkedin.com/company/hel-group/</a> on Twitter, we're @hel_group, <a href="https://twitter.com/hel_group">https://twitter.com/hel_group</a>or search for us on Facebook

Modern Chemistry Podcast

Vivek Polshettiwar – Catalyst for change

Terms usedIf you’re not familiar with some of the terms used in this discussion – some key ones are described here for your reference:<ul><li>C rate – the charge and discharge rates of a battery. This varies by battery, but a 1C rate will be a defined current over a particular period of time. </li><li>Cell – The smallest form of a battery – best considered in consumer terms as a single AA or AAA, etc battery.</li><li>Module – A number of individual cells connected together. Multiple modules will be used in a pack.</li><li>Pack – A collection of battery cells, OR battery modules connected together to form the full power source for a device – for example the pack that would be connected to a power tool.</li><li>Thermal runaway – Due to misuse, damage or aging, the process where a battery starts to self-heat. As the battery heats, it causes more damage, reading to greater heating, often resulting in fire, explosion or release of gases. An internal short-circuit is often the intermediate cause of the runaway. The runaway will continue until all the chemicals causing the runaway reaction have been consumed. These are very difficult reactions to stop once they have started.</li><li>Arcing – Current passing through a gas, which causes the electrical breakdown of that gas, often accompanied by production of plasma and visible light.</li><li>Series connection – connecting two or more batteries positive-to-negative. This provides a system that delivers the sum of the battery voltages, without adjust the amp hour output.  For example, two 4-volt 3 amp-hour, batteries in series would provide 8 volts and 3 amp hours. </li><li>Parallel connection – connecting two or more batteries together positive-to-positive and negative-to-negative. This provides a system with increased amp hour ratings, without adjusting the current. For example, two 4-volt 3 amp-hour, batteries in parallel would provide 4 volts and 6 amp hours.</li><li>Burst disk – a single use pressure relief system, which is a surface that bursts when a certain pressure is exceeded.</li></ul>Nigel also mentions the Munro Tesla teardown – you can find that video here - https://www.youtube.com/watch?v=LeZzEg3GIcg As well as <a href="http://www.batterydesign.net">www.batterydesign.net</a>, Nigel is online at https://www.linkedin.com/in/nigel-taylor-2131964/  Our theme music is "Wholesome" by Kevin MacLeod (https://incompetech.com)Music from https://filmmusic.ioLicense: CC BY (<a href="http://creativecommons.org/licenses/by/4.0/">http://creativecommons.org/licenses/by/4.0/</a>) Connect with me (Paul) at <a href="https://www.linkedin.com/in/paulorange/">https://www.linkedin.com/in/paulorange/</a>H.E.L. group can be found at <a href="http://www.helgroup.com">www.helgroup.com</a> online, on LinkedIn at <a href="https://www.linkedin.com/company/hel-group/">https://www.linkedin.com/company/hel-group/</a>  on Twitter, we're @hel_group, <a href="https://twitter.com/hel_group">https://twitter.com/hel_group</a> or search for us on Facebook

Nigel Taylor – EV batteries – that’s quite a challenge

If you’re not familiar with some of the terms used in this discussion – some key ones are described here for your reference:<ul><li>Bio-inorganic chemistry – the study of the role of metals in biological processes. This includes naturally occurring molecules and artificially introduced proteins.</li><li>Metal center (active site) – the active metal in a larger molecule that reacts in (or catalyzes) a reaction</li><li>Catalysis – increasing the rate of a reaction by introducing a substance to the reaction know as a catalyst. Catalysts are not consumed in the reaction.</li><li>Functionalization of Carbon-Hydrogen bonds – converting a (Carbon-Hydrogen) C-H bond to a C-R bond. R represents a functional group that enables the final molecule to perform a specific reaction.</li><li>Activation of Carbon-Hydrogen bonds – Reading (or breaking) the C-H bond so that the desired functional group can replace the Hydrogen.</li><li>Enzyme – An organic catalyst, often found in nature and active in living cells. Enzymes are typically protein molecules.</li><li>Organic molecule/organic substrate – A compound containing Carbon.</li><li>Hydrogen bonding – An electrostatic force of interaction between a Hydrogen atom and another electronegative atom. The most common Hydrogen bonds occur between Hydrogen and either Nitrogen, Oxygen, or Fluorine.</li><li>Reoxidize (oxidize) – during a reaction, a catalyst may accept electrons from the primary reactants or otherwise become reduced. Removing those electrons, or otherwise oxidizing the catalyst enables it to once more catalyze the reaction.</li><li>Stoichiometric amount – Calculating the number of molecules (usually in moles) required for a given reaction.</li><li>Photochemistry – Chemical reactions which are influenced by the presence or absence of light, often at specific wavelengths. Photochemistry is used to closely control reactions – i.e. the reaction will not take place if the correct light isn’t present.</li><li>Motif – A specific part of a molecule – often found in a number of molecules.</li></ul> Prof Maiti is contactable on social media, and you can find him on LinkedIn at https://www.linkedin.com/in/debabrata-maiti-54ab622a/  Our theme music is "Wholesome" by Kevin MacLeod (https://incompetech.com)Music from https://filmmusic.ioLicense: CC BY (<a href="http://creativecommons.org/licenses/by/4.0/">http://creativecommons.org/licenses/by/4.0/</a>) Connect with me (Paul) at <a href="https://www.linkedin.com/in/paulorange/">https://www.linkedin.com/in/paulorange/</a>H.E.L. group can be found at <a href="http://www.helgroup.com">www.helgroup.com</a> online, on LinkedIn at <a href="https://www.linkedin.com/company/hel-group/">https://www.linkedin.com/company/hel-group/</a>  on Twitter, we're @hel_group, <a href="https://twitter.com/hel_group">https://twitter.com/hel_group</a> or search for us on Facebook

Debabrata Maiti – It takes a community to functionalize a C-H bond

Episode 18 of the Modern Chemistry podcast features Dr. Sebastian Gross. Sebastian is a consultant at Wega IT, (<a href="https://www.wega-it.com/en/">https://www.wega-it.com/en/</a>). Where he supports clients, using his advanced experience in biotechnology methods, bioprocess development, lab & assay automation and kinetic modelling. Sebastian has strong experience in tools like Liquid Handling station, SiLA, Python, MATLAB, LabVIEW, SQL, and Data modelling.Prior to Wega, Sebastian was head of process development at TUB (Technische Universität Berlin), where he also did his PhD. Sebastian is contactable on social media, and you can find him on LinkedIn at https://www.linkedin.com/in/sebastian-hans/ You can also connect with Sebastian via the Wega website link above.Sebastian’s web linkOur theme music is "Wholesome" by Kevin MacLeod (https://incompetech.com)Music from https://filmmusic.ioLicense: CC BY (<a href="http://creativecommons.org/licenses/by/4.0/">http://creativecommons.org/licenses/by/4.0/</a>) Connect with me (Paul) at <a href="https://www.linkedin.com/in/paulorange/">https://www.linkedin.com/in/paulorange/</a>H.E.L. group can be found at <a href="http://www.helgroup.com">www.helgroup.com</a> online, on LinkedIn at <a href="https://www.linkedin.com/company/hel-group/">https://www.linkedin.com/company/hel-group/</a>  on Twitter, we're @hel_group, <a href="https://twitter.com/hel_group">https://twitter.com/hel_group</a> or search for us on Facebook

Paul Orange Ph.D.

Modern Chemistry Podcast by Paul Orange Ph.D.

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