April 5, 2021 at 4.30 pm (Via Zoom)
Solar energy conversion to storage: my journey
For long sustainable human civilization we have to reduce our ecological footprint and that can only be done by minimizing the impact on the environment without compromising the current process of modernization. Out of several challenges to mankind, source of energy is the major one. In current time we are very much dependent on our fuel bank i.e. fossil fuels. The stored fossil fuels will not run for ever, sooner or later we will run out of this. The other aspect is that burning fossil fuels generate CO2 which is the one of the main culprits for global warming and related environmental disbalance. So there is a basic need to search for alternative renewable energy sources. One good way is to utilize the solar energy that can be done either conversion of solar energy into electrical energy or storing as fuels.
So here in this seminar I will discuss my contribution towards these goals. A part of my PhD thesis deals with solar energy conversion and to do that I designed several series of organic dyes for dye sensitized solar cells (DSSC). DSSC is a nice technique for converting solar energy into electrical energy but ˜ 20% of total consumption of energy is consumed as electrical energy and rest as fuels. Alternative and effective way to contribute towards the renewable energy research area is to think about storing solar energy as fuel. To fulfil that goal we can mimic natural photosynthesis. So I will discuss some of my works during postdoctoral study which were focused in the area of solar light utilization to do some chemical reactions such as water and CO2 reduction and alcohol oxidation by either heterogeneous photocatalysis or photo-electrocatalysis through photo-electrochemical cells (PEC).
1) M. Grätzel et al. , Nature, 2001, 414, 338.
2) A. Fujishima et al., Nature, 1972, 238, 37.
3) P. B. Pati et al., Tetrahedron, 2013, 69, 2167.
4) P. B. Pati et al., Energy Environ. Sci., 2017, 10, 1372.
5) P. B. Pati et al., Nat. Commun., 2020, 11, 3499.
- Visiting Fellows
- Graduate Students
- JRF SRF RA
|PhD Students||Graduation Year||Present Coordinates|
|Soumen K. Manna||2008||-|
|Atul K. Srivastava||2011||-|
|Manoj Kumar Rout||2011||-|
|Ashok K. Rout||2011||-|
|Saswata S. Sarkar||2013||-|
|Venus Singh Mithu||2013||-|
|G. Jithender Reddy||2014||-|
|Manas K. Ghosh||2014||-|
|K. Hema Chandra||2014||-|
|Dwaipayan Dutta Gupta||2017||-|
|Amit Kumar Mishra||2018||-|
|Vijay Kumar Singh||2020||-|
December 26, 2013 at 11.30 am in NMR Conference Room
Title : To be announced
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Bioinorganic and Biomimetic Chemistry
Research in Bioinorganic and Biomimectic chemistry at TIFR focuses on understanding the fundamental mechanisms underlying the role of metal ion cofactors in enzymes and developing metallo-enzyme inspired chemistry for applications in catalysis and sensing.
Studies in Bioinorganic Chemistry delineate the effects of active site amino acids on the structure, stability, electronic properties, and functions of metal ions in metalloproteins and metalloenzymes. Molecular modeling and docking analyses are used to rationally design novel mutant proteins with new functions of the metal center in a metalloenzyme. The designs are experimentally validated using various spectroscopic and kinetic techniques including circular dichroism, mass spectrometry, direct electrochemistry, and stopped-flow kinetics along with EPR and NMR techniques. In a Biomimetic approach towards the development of catalysts and sensors we carefully scrutinize coordination geometries of metal ions in metallo-enzymes and metallo-regulatory protein, to design selective ligands for metal ion complexation.
Students in the Bioinorganic program learn a confluence of techniques ranging from bio-engineering and synthesis, to spectroscopy, and develop a fundamental understanding on the crucial role of metal ions in biology.