Sujoy Das Research Group

Bioinspired Nanomaterials Laboratory (BiNL)



Biominerilation, a biological controlled process mediated by living organisms, recently gained numerous importances in nanomaterial synthesis. Moreover microorganisms intimately interact with metals and transform them in many ways and this has a global environmental significance in reclamation of pollution. Our research interest focused on the synthesis of metal nanoparticles using microorganism as a living nanofactory and its wide application in pollution control management, catalysis and biomedicine.



Bioinspired Nanomaterial Synthesis

 About 500 million years ago organisms started growing inorganic materials like calcium carbonate, silica, bone and glass. The synthesis process occurs through a biologically guided process known as biomineralization. Inspiring from this natural occurring process, my research effort focused on the development of novel strategies for the controlled nanomaterial synthesis using living organisms as natural nanomachinery and application of nanotechnology in medicine, environmental cleaning, and catalysis.

 Synthesis of gold nanoparticles by fungal proteins

Sujoy K Das*, Md. Motiar R. Khan, Arun K. Guha, and Nityananda Naskar. Green Chem. 2013, 15, 2548-2557.

Sujoy K. Das, Jinni Liang, Michael Schmidt, Fathima Lafir, and Enrico Marsili. ACS Nano 20126, 6165-6173.

Sujoy K. Das, Ishita Shome, and Arun K Guha. RSC Adv. 2012, 2, 3000-3007.

Sujoy K. Das, Calum Dickinson, Fathima Lafir, Dermot F. Broughan, and Enrico Marsili. Green Chem. 2012, 14, 1322-1334.

Sujoy K. Das, Akhil R. Das, and Arun K. Guha. Small 2010 6, 1012–1021.

Sujoy K. Das, Akhil R. Das, and Arun K. Guha. Langmuir 2009 25, 8192-8199.



Nanoparticle-Bacteria Interaction

Global emergence of multidrug resistance (MDR) bacteria presents one of the greatest challenges facing public health care today. Third generation antibiotics are becoming ineffective in many nosocomial infections. Thus, there is an urgent need to discover new types of antimicrobial agent to combat MDR strains. Recently, metal nanoparticles find good  opportunity to treat MDR bacteria. However, the mechanism of action has not yet been fully understood. Detail study on nanoparticle-bacteria is therefore, highly necessary to devlope nanoparticle as future nanomedicine. Currently, we are investigating nanoparticle-bacteria interaction using different spectroscopic and microscopic approaches.

Sujoy K Das*, Md. Motiar R. Khan, Thanusu Paranthaman, Fathima R. Laffir, Arun K. Guha, G. Sekaran, and Asit Baran Mandal*. Nanoscale 2013, 5, 5549–5560

Sujoy K. Das*, Md. Motiar R. Khan, Arun K. Guha, Akhil R. Das, and Asit Baran Mandal. Bioresource Technolo. 2012, 124, 495-499.

Sujoy K. Das, Akhil R. Das, and Arun K. Guha. Langmuir 2009 25, 8192-8199. 


Microorganism at Nanoscale

 Microorganism plays crucial role environmental biotechnology to biomedical science. The supramolecular moieties of the cell wall impart strength to the cells, control their shape, offer protection against mechanical damage, and regulate intracellular communication processes and their interactions with the environment. As the cell wall directly interacts with the extracellular environment, investigations on such surfaces are likely to yield vital information toward understanding relevant processes. Atomic force microcopy have been used for imaging the living cells at nanoscale level and measure the nanomechanical properties of the cell wall. We demonstrated through atomic force microscopic study that both the cell wall ultrastructure and nanomechanical properties alters with progress of growth. 



Sujoy K. Das, Akhil R. Das, and Arun K. Guha. J. Phys. Chem. B 2009, 113, 1485–1492.

Sujoy K. Das, Akhil R. Das and Arun K. Guha Langmuir 2009, 25, 360-366.

Sujoy K. Das, Manabendra Mukherjee and Arun K. Guha Langmuir 2008, 24, 8643-8650.


Reclamation of Environmental Pollutants

Microorganisms play important roles in natural biogeochemical cycles and have decisive role in environmental fate of toxic metals and radionuclides through transformations between soluble and insoluble forms. This microbial transformation is dominated by redox reactions, complexation of organic and inorganic compounds. Moreover microorganisms living in extreme metal concentrations possess an essential for their survival ability to resist such stress. These metal-microbe interactions have an important role in biotechnological applications in numerous fields from environmental biotechnology to recent nanobiotechnology. My specific research endeavors focused on the development of suitable ecofriendly methodologies e.g. employing biosorption, bioaccumulation and or bioremediation process for reclamation of different environmental pollutants.                     


Sujoy K. Das, Arun K. Guha, and Asis K. Sanyal. J. Hazard. Mater. 2009 172, 485-490.

Sujoy K. Das, Akhil R. Das, and Arun K. Guha. Environ. Sci. Technol. 2007, 41, 8281-8287.

Sujoy K. Das, Jayati Bhowal, Akhil R. Das, and Arun K. Guha. Langmuir 2006, 22, 7265-7272.

Recent News

Our recent paper has been accepted in ACS Applied Materials & Interfaces

Our recent article has been published as cover page article in Current Science (Vol. 108, No. 11, 10 June 2015)

Congradulation Paranthaman for his publication in Journal of Hazardous Materials (I.F. 4.333)!

Our Paper has been accepted for publication in Journal of Physical Chemistry C (Impact factor 4.835)

B. Ramalingam joined as an Assistant Professor. Congradulation Ramalingam!

Congradulation B. Ramalingam for successfully completion of M.E. thesis!

Vershaniyah Ravishanker from NIT, Calcut joined our research group for Internship

Arjun Senthil from SRM University joined our research group for Internship

Our research work has been highlighted in Nanowerk

We received Certificate of Appreciation for publishing in High Impact Factor Journals during the year 2013

Our recent work has been highlighted in Time of India News (April 8th, 2014)

Arun Peter joined our research group for project work

Nanoscale paper has been highlighted in generousNature India News 


Our recent paper published in Green Chemistry (Impact factor 6.82)

Our Paper has been accepted for publication in Nanoscale (Impact factor 6.32)

Mr. Paranthamon joined our group as a project fellow

Our work has been highlighted in (UK's most essay writing service)

Our paper has been published in Chem. Comm. (Impact factor 6.16)

Our project proposal has been recommended for funding from DST

Our paper published in Bioresource Technology (Impact factor 4.9)

Our project proposal has been recommended for funding from DBT

Our Paper published in ACS Nano (Impact factor 11.42)

Open Position

Currently we do not have any open position, however, student with valid fellowship from CSIR/DBT/ICMR/INSPIRE or any other funding agency may apply for PhD position in our group.



We frequently accept limited number of M.Sc and M.Tech students to work on defined projects for periods of 5-6 months. Hardworking and highly motivated students may send their CV at,