About Pradeep

About Pradeep

Thalappil Pradeep

Institute Professor, Deepak Parekh Institute Chair Professor and
Professor of Chemistry, Department of Chemistry,
Indian Institute of Technology Madras, Chennai – 600 036, INDIA

h-index: 97; h5-index: 60; citations: ~45,881
(Google Scholar)
h-index: 83; citations: ~34,996
(SCOPUS)

Research Summary

Thalappil Pradeep’s research explores water across scales – from molecular and interfacial phenomena to technologies that deliver societal impact. Through contributions spanning clean water technologies, microdroplet chemistry, ice and clathrate science, and atomically precise materials, his work connects fundamental chemistry with large-scale human needs.
A major part of his work has focused on affordable drinking water technologies based on advanced nanomaterials. These efforts led to the development of widely deployed purification systems for arsenic and other contaminants, providing access to safe water for millions of people across India. To accelerate translation of laboratory discoveries into societal technologies, he founded the International Centre for Clean Water at IIT Madras Research Park.
Alongside societal technologies, his group investigates the fundamental chemistry and physics of water interfaces. His recent work on charged water microdroplets has revealed unusually rapid chemical transformations, including spontaneous mineral weathering and nanoparticle formation under ambient conditions. These studies have contributed to the emerging area of microdroplet mechanochemistry and have highlighted the unique reactivity of electrified aqueous interfaces.

Another major direction of his research concerns ice and cryogenic molecular systems. His laboratory has explored ultra-thin ice films, low-temperature surface chemistry, and clathrate hydrates formed under extreme conditions relevant to planetary and interstellar environments. These studies aim to understand how water behaves in confined, cryogenic, and extraterrestrial settings.
His broader research interests include atomically precise clusters, molecular materials, spectroscopy, interfacial chemistry, and advanced instrumentation. In atomically precise clusters, his group has discovered new structures, new phenomena, and new applications. His work has helped establish that clusters can exhibit molecule-like behaviour, bridging the gap between atoms, molecules, and materials.
Prof. Pradeep has mentored a large number of doctoral students, established major national research facilities including the National Cryo-Electron Microscopy Facility at IIT Madras, and co-founded several technology start-ups. His group is highly interdisciplinary, bringing together chemistry, materials science, water technology, spectroscopy, cryogenic science, and instrumentation.
Prof. Pradeep is a Fellow of all major science and engineering academies in India, as well as TWAS, AAAS, African Academy of Sciences, Academia Europaea, and the US National Academy of Engineering. His recognitions include the Padma Shri, Vigyan Shri, Nikkei Asia Prize, VinFuture Prize and Eni Award.

The research directions of the group may broadly be viewed through three interconnected themes:
1. Water for society
2. Water as reactive matter
3. Water in extreme environments

Interests:

Other Interests:

To know more about his interests and activities, please watch a few short videos:

ICCW

Water that heals

Rivers of India

Contact

Professor In-charge

International Centre for Clean Water (ICCW)

https://iccw.world/

Education

Post-doctoral research

Purdue University, Indiana

Ph.D.

Indian Institute of Science

Post-doctoral research

Lawrence Berkeley Laboratory, University of California, Berkeley

B.Sc., M.Sc.,

Calicut University

Post-doctoral research

Purdue University, Indiana

Post-doctoral research

Lawrence Berkeley Laboratory, University of California, Berkeley

Ph.D.

Indian Institute of Science

B.Sc., M.Sc.,

Calicut University

Career

Visiting Faculty

IIT Madras

1993 - 1995

Assistant Professor

IIT Madras

1995 - 2000

Associate Professor

IIT Madras

2000 - 2003

Professor

IIT Madras

2004

Senior Professor

IIT Madras

2010

Institute Chair Professor

IIT Madras
(one of the first such appointments)

2016

Institute Professor

IIT Madras

2015

Visiting Appointments

• Visiting Scientist, Purdue University, Indiana 1994
• Fulbright Scholar, Purdue University, 1998
• Visiting Scientist, Institute of Chemistry, Academia Sinica, Taipei, Taiwan, 1999
• Visiting Scientist, Department of Chemistry, Pohang University of Science and Technology, Korea, 2000
• Visiting Professor, University of Leiden, 2002 (2 times)
• Visiting Scientist, EPFL, Lausanne, Switzerland 2002
• Adjunct Professor, Institute of Life Sciences, Ahmedabad University, 2013-2016
• JSPS Fellow, Hyogo University, Japan 2006
• Visiting Scientist, Institute of Molecular Science, Okazaki, Japan 2006
• Distinguished Visiting Professor, PSG Institute of Advanced Studies, Coimbatore, 2013 – 2020
• Visiting Professor, Manipal University, 2018- present
• Royal Society Wolfson Visiting Fellow, University of Manchester, 01/2026-12/2027
• Hovde Distinguished Visiting Professor, Purdue University, 08/2026 – 07/2028

Short list

Full list

Research projects Ongoing

Important research projects completed

Implementation projects

Instruments developed in the recent past

Selected Publications

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