Associate Professor
Dept: Earth Sciences (DES)
E-mail: gkdarbha [at] iiserkol.ac.in

1. Frank, Yulia; Vorobiev, Danil; Mandal, Abhishek; Lemeshko, Yana; Rakhmatullina, Svetlana and Darbha, Gopala Krishna. 2022."Freshwater Fish Siberian Dace Ingest Microplastics in the Remote Yenisei Tributary." Toxics, 11, 38
2. Tiwari, Ekta; Singh, Nisha; Khandelwal, Nitin; Ganie, Zahid Ahmad; Choudhary, Aniket; Monikh, Fazel Abdholahpur and Darbha, Gopala Krishna. 2022." Impact of nanoplastic debris on the stability and transport of metal oxide nanoparticles: role of varying soil solution chemistry,." Chemosphere, 308, 136091
3. Khandelwal, Nitin and Darbha, Gopala Krishna. 2022."Sorption and continuous filtration of heavy metals and radionuclides using novel nano-Farringtonite: Mechanisms delineation using EXAFS." Chemosphere, 308, 136376
4. Khandelwal, Nitin; Singh, Nisha; Tiwari, Ekta and Darbha, Gopala Krishna. 2022."Achieving strong Pb-Cr complexation in Mg/Al LDHs for ultrafast chromate ions separation and chrome recovery from complex water matrices." Environmental Nanotechnology, Monitoring and Management, 18, 100754
5. Bandekar, Mandar; Monikh, Fazel Abdolahpur; Kekalainen, Jukka; Tahvanainen, Teemu; Kortet, Raine; Zhang, Peng; Guo, Zhiling; Akkanen, Jarkko; Leskinen, Jari T.T.; Gomez-Gonalez, Miguel A.; Darbha, Gopala Krishna; Grossart, Hans-Peter; Valsami-Jones, Eugenia and V.K.Kukkonen, Jussi. 2022." Submicron Plastic Adsorption by Peat, Accumulation in Sphagnum Mosses and Influence on Bacterial Communities in Peatland Ecosystems." Environmental Science and Technology, 56, 15661
6. Sarkar, Arpan; Paul, Biswajit and Darbha, Gopala Krishna. 2022."The groundwater arsenic contamination in the Bengal Basin-A review in brief." Chemosphere, 299, 134369
7. Khandelwal, Nitin; Rajak, Jai Kishan; Singh, Nisha; Tiwari, Ekta; Ganie, Zahid Ahmad; Choudhary, Aniket and Darbha, Gopala Krishna. 2022."Continuous filtration of multi-metal contaminated river and groundwater using antioxidant preserved redox-sensitive nanocomposites: ultrahigh reactivity and self-sedimentation possibility." Environmental Science and Technology Water, 2, 1073-1086
8. Tiwari, Ekta; Khandelwal, Nitin; Singh, Nisha and Darbha, Gopala Krishna. 2022."Influence of natural soil colloid’s stability on transport of copper-based nanoparticles in saturated porous media." Environmental Nanotechnology, Monitoring and Management, 17, 100633
9. Choudhary, Aniket; Khandelwal, Nitin; Singh, Nisha; Tiwari, Ekta; Ganie, Zahid Ahmad and Darbha, Gopala Krishna. 2022."Nanoplastics interaction with feldspar and weathering originated secondary minerals (kaolinite and gibbsite) in the riverine environment." Science of the Total Environment, 818, 151831
10. Tiwari, Ekta; Khandelwal, Nitin; Singh, Nisha; Biswas, Sannay and Darbha, Gopala Krishna. 2022." Effect of clay colloid – CuO nanoparticles interaction on retention of nanoparticles in different types of soils: role of clay fraction and environmental parameters." Environmental Research, 203, 111885
11. Singh, Nisha; Khandelwal, Nitin; Ganie, Zahid; Tiwari, Ekta and Darbha, Gopala Krishna. 2021."Eco-friendly magnetic biochar: an effective trap for nanoplastics of varying surface functionality and size in the aqueous environment." Chemical Engineering Journal, 418, 129405
12. Khandelwal, Nitin and Darbha, Gopala Krishna. 2021."Combined antioxidant capped and surface supported redox-sensitive nanoparticles for continuous elimination of multi-metallic species." Chemical Communications, 57, 7280
13. Ganie, Zahid Ahmad; Khandelwal, Nitin; Tiwari, Ekta; Singh, Nisha and Darbha, Gopala Krishna. 2021." Biochar-facilitated remediation of nanoplastic contaminated water: Effect of pyrolysis temperature induced surface modifications." Journal of Hazardous Materials, 417, 126096
14. Monikh, Fazel Abdhholahpur; Chupani, Latifeh; Guo, Zhiling; Zhang, Peng; Darbha, Gopala Krishna; Vijver, Martina G; Jones, Eugenia Valsami and Peijnenburg, Willie J.G.M.. 2021."The stochastic association of nanoparticles with algae at the cellular level: effects of NOM, particle size and particle shape." Ecotoxicology and Environmental Safety, 218, 112280
15. Biswas, Bharati Debi; Purkayastha, Moushumi Dutta; Tiwari, Ekta; Denrah, Shankuk; Sarkar, Mitali; Darbha, Gopala Krishna and Majumder, Tapas Pal. 2021." Study of the photocatalytic activity of Mn-doped ZnO nanocomposites depending on their morphology and structure with the variation of manganese concentration." Surfaces and Interfaces, 23, 100902
16. Khandelwal, Nitin and Darbha, Gopala Krishna. 2021."A decade of exploring MXenes as aquatic cleaners: covering a broad range of contaminants, current challenges and future trends." Chemosphere, 1, 130587
17. Singh, Nisha; Bhagat, Jacky; Tiwari, Ekta; Khandelwal, Nitin; Darbha, Gopala Krishna and Shyama, S. K.. 2021."Metal oxide nanoparticles and polycyclic aromatic hydrocarbons alter nanoplastic's stability and toxicity to zebrafish." Journal of Hazardous Materials, 407, 124382
18. Rajak, Jai Kishan; Khandelwal, Nitin; Bahera, Mahima Prasad; Tiwari, Ekta; Singh, Nisha; Ganie, Zahid; Darbha, Gopala Krishna; Darbha, Gopala Krishna; Monikh, Fazel Abdolahpur and Schaefer, Thorsten. 2021."Removal of Chromate ions from leachate-contaminated groundwater samples of Khan Chandpur, India using chitin modified iron-enriched hydroxyapatite nanocomposite." Environmental Science and Pollution Research, 1, 1
19. Khandelwal, Nitin; Tiwari, Ekta; Singh, Nisha and Darbha, Gopala Krishna. 2021."Heterogeneously porous multi-adsorbent Clay (C)-Biochar (BC) surface to support redox-sensitive nanoparticles: applications of novel C-BC-nZVI nanotrident in continuous water filtration." Environmental Science and Technology Water, 1, 641-652
20. Monikh, Fazel Abdolahpur; Chupani, Latifeh; Lao, Daniel Arenas; Guo, Zhiling; Zhang, Peng; Darbha, Gopala Krishna; Valsami-Jones, Eugenia; Lynch, Iseult; Vijver, Martina G.; Bodegom, Peter M.van and Peijnenburg, Willie J.G.M.. 2021." Particle number-based trophic transfer of gold nanomaterials in an aquatic food chain." Nature Communications, 12, 899
21. Singh, Nisha; Khandelwal, Nitin; Tiwari, Ekta; Sarkar, Nabnita; Lahiri, Susanta; Luetzenkirchen, Johannes and Darbha, Gopala Krishna. 2021."Interaction of metal oxide nanoparticles with microplastics: impact of weathering under riverine conditions." Water Research , 189, 116622
22. Singh, Nisha; Mondal, Arijit; Bagri, Amerjeet; Tiwari, Ekta; Khandelwal, Nitin; Monikh, Fazel Abdolahpur and Darbha, Gopala Krishna. 2021."Characteristics and spatial distribution of microplastics in the lower Ganga River water and sediment." Marine Pollution Bulletin, 163, 111960
23. Khandelwal, Nitin; Tiwari, Ekta; Singh, Nisha; Marsac, Remi; Schaefer, Thorsten; Monikh, Fazel Abdolahpur and Darbha, Gopala Krishna. 2021."Impact of long-term storage of various redox sensitive supported nanocomposites on their application in removal of dyes from wastewater: mechanisms delineation through spectroscopic investigations." Journal of Hazardous Materials, 401, 123375
24. Monikh, Fazel Abdolahpur; Vijver, Martina G.; Guo, Zhiling; Zhang, Peng; Darbha, Gopala Krishna and Peijnenburg, Willie J.G.M.. 2020."Metal sorption onto nanoscale plastic debris and trojan horse effects in Daphnia magna: Role of dissolved organic matter." Water Research, 186, 116410
25. Luetzenkirchen, Johannes; Darbha, Gopala Krishna; Chakravadhanula, Venkata Sai Kiran; Redel, Engelbert; Selmani, Atida and Vayssieres, Lionel. 2020." Interaction of polyoxometallates and nanoparticles with collector surfaces – focus on the use of streaming potential." Journal of Colloids and Interfaces, 4, 39
26. Zhai, Yujia; Monikh, Fazel Abdolhapur; Wu, Juan; Grillo, Renato; Lao, Daniel Arenas; Darbha, Gopala Krishna; Vijver, Martina G. and Peijnenburg, Willile J.G.M.. 2020."Interaction between a nano-formulation of atrazine and the rhizosphere bacterial community: atrazine degradation and bacterial community alterations." Environmental Science:Nano, 7, 3372
27. Purkayastha, Moushumi Dutta; Datta, Joydeep; Ray, Pratha Pratim; Singh, Nisha; Darbha, Gopala Krishna; Denrah, Shanku; Sarkar, Mitali; Majumder, Tapas Pal and Ghosh, Dipankar. 2020."Modelling the photocatalytic behaviour of p-1 n nickel-titanium oxide nanocomposite." Chemical Engineering Research and Design, 161, 82-94
28. Monikh, Fazel Abdolahpur; Chupani, Latifeh; Smerkova, Kristyna; Bosker, Thijs; Cizar, Petr; Kryzanek, Vladislav; Richtera, Lukas; Franek, Roman; Zuskova, Elisa; Skoupy, Radim; Darbha, Gopala Krishna; Vijver, Martina; Valsami-Jones, Eugenia and Peijnernburg, Willie. 2020."Engineered Nanoselenium Supplemented Fish Diet: Toxicity Comparison with Ionic Selenium and Stability against Particle Dissolution, Aggregation and Release." Environmental Science:Nano, 1, 1
29. Purkayastha, Moushumi Dutta; Sil, Sayantan; Singh, Nishna; Ray, Pratha Pratim; Darbha, Gopala Krishna; Bhattarcharya, Sudipta; Mallick, Amirul Islam and Majumder, Tapas Pal. 2020."Sonochemical synthesis of nanospherical TiO2 within graphene oxide nanosheets and its application as a photocatalyst and a Schottky diode." Chemistry of Flat Materials, 22, 100180
30. Tiwari, Ekta; Singh, Nisha; Khandelwal, Nitin; Monikh, Fazel Abdolahpur and Darbha, Gopala Krishna. 2020."Application of Zn/Al Layered Double Hydroxides for the removal of nano-scale plastic debris from aqueous systems." Journal of Hazardous Materials, 397, 122769
31. Khandelwal, Nitin; Bahera, Mahima Prasad; Rajak, Jai Kishan and Darbha, Gopala Krishna. 2020."Biochar–nZVI nanocomposite: optimization of grain size and Fe0 loading, application and removal mechanism of anionic metal species from soft water, hard water and groundwater." Clean Technologies and Environmental Policy, 1, 1
32. Tiwari, Ekta; Mondal, Mithu; Singh, Nisha; Khandelwal, Nitin; Monikh, Fazel Abdolahpur and Darbha, Gopala Krishna. 2020."Effect of irrigation water type and other environmental parameters on CeO2 nanopesticide-clay colloid interactions." Environmental Science: Processes and Impacts, 22, 84-94
33. Pramanick, Anupam; Purkayastha, Moushumi Dutta; Singh, Nisha; Darbha, Gopala Krishna and Majumder, Tapas Pal. 2020."Spectroscopic behavior of ZnS nanostructured materials." Chinese Journal of Physics, 62, 13-20
34. Purkayastha, Moushumi Dutta; Singh, Nisha; Darbha, Gopala Krishna and Pal Majumder, Tapas. 2020."Strain influence on the structural properties of nitrogen and fluorine codoped TiO2." Journal of Optik, 206, 164209
35. Gupta, Kanha; Khandelwal, Nitin and Darbha, Gopala Krishna. 2019."Removal and recovery of toxic nanosized Cerium Oxide using eco-friendly Iron Oxide Nanoparticles." Frontiers of Environmental Science and Engineering, 14, 15
36. Monikh, Fazel Abdolahpur; Fryer, Benjamin; Lago, Daniel Arenas; Vijver, Martina G.; Darbha, Gopala Krishna; Jones, Eugenia Valasami and Peijnenburg, Willie J.G.M.. 2019."A Dose Metrics Perspective on the Association of Gold Nanomaterials with Algal Cells." Environmental Science & Technology Letters, 6, 732-738
37. Singh, Nisha; Tiwari, Ekta; Khandelwal, Nitin and Darbha, Gopala Krishna. 2019."Understanding the stability of nanoplastics in aqueous environments: effect of ionic strength, temperature, dissolved organic matter, clay, and heavy metals (selected as cover page article)." RSC Environmental Science: Nano, 6, 2921-3174
38. Khandelwal, Nitin Kumar; Singh, Nisha; Tiwari, Ekta and Darbha, Gopala Krishna. 2019."Novel synthesis of clay supported amorphous aluminum nanocomposite and its application in removal of hexa-valent Chromium from aqueous solutions." RSC Advances, 9, 11160
39. Purkayastha, M D; Middya, S; Ray, p p; Biswas, B D; Sarkar, M; Darbha, G K; Singh, N and Majumder, T Pal. 2019."The carrier transport properties and photodegradation ability of low temperature synthesized phase pure rutile titanium oxide nanostructured materials." Materials Chemistry and Physics, 226, 362-370
40. Luetzenkirchen, Johannes; Franks, G.V.; Plaschke, Marcus; Zimmermann, R; Heberling, Frank; Abdelmonem, A; Darbha, Gopala Krishna; Schild, Dieter; Filby, Andre; Eng, P; Catalono, J.G.; Rosenqvist, J.; Aytug, T.; Zhang, D.; Gan, Y and Braunschweig, B.. 2018."The surface chemistry of sapphire-c: A literature review and a study on various factors influencing its IEP." Advances in Colloid and Interface Science, 251, 1-25
41. Bae, Sungjun; Gim, Suji; Kim, Hyungjun; Dorcet, Vincent; Pasture, Mathieu; Greneche, Jean-Marc; Darbha, Gopala Krishna and Hanna, Khalil. 2017."New Features and Uncovered Benefits of Polycrystalline Magnetite as Reusable Catalysts in Reductive Chemical Conversion." Journal of Physical Chemistry C, 45, 25195
42. Stoll, Madeleine; Huber, Florian M; Darbha, Gopala Krishna; Schill, Eva and Schaefer, Thorsten. 2016."Impact of gravity and particle size on monodisperse polystyrene particles in an artificial fracture flow cell ." Colloid and interface science, 475, 171-183
43. Delabernhe, L; Steudel, A; Darbha, Gopala Krishna; Schaefer, Thorsten; Schuhmann, R; Woehll, C; Geckeis, Horst and Emmerrich, K. 2015."Influence of mineralogical and morphological properties on the cation exchange behavior of dioctahedral smectites." Colloid and Surfaces A, 481, 591 - 599
44. Fischer, Cornelius; Aurin, Philipp; Darbha, Gopala Krishna and Arp, Gernot. 2013."Experimental approaches to the formation of early-diagenitc grain coats on quartz surfaces." German journal of Geosciences (ZDGG), 164, 225-236
45. Darbha, Gopala Krishna; Fischer, Cornelius; Luetzenkirchen, Johannes and Schaefer, Thorsten. 2012."Site-specific retention of colloids at rough rock surfaces." Environmental Science and Technology, 46, 9378
46. Fischer, Cornelius; Michler, Alex; Darbha, Gopala Krishna; Kanbach, Mike and Schaefer, Thorsten. 2012."Deposition of mineral colloids on rough rock surfaces." American Journal of Science, 312, 885
47. Darbha, Gopala Krishna; Fischer, Cornelius; Michler, Alex; Luetzenkirchen, Johannes; Schaefer, Thorsten; Heberling, Frank; Schild, Dieter and Schild, Dieter. 2012."Deposition of Latex Colloids at Rough Mineral Surfaces: An Analog Study using Nanopatterned Surfaces." Langmuir, 28, 6606
48. Michler, Alexander; Fischer, Cornelius; Darbha, Gopala Krishna and Schaefer, Thorsten. 2011."Retention of Fe-oxide colloids in a black slate environment." Journal of International Mine water association, 405, 405
49. Darbha, Gopala Krishna; Schaefer, Thorsten; Heberling, Frank; Luettge, Andreas and Fischer, Cornelius. 2010."Retention of latex colloids on calcite as a function of surface roughness and topography." Langmuir, 26, 4743
50. Darbha, Gopala Krishna; Rai, Uma Shanker; Singh, Anant Kumar and Ray, Paresh C. 2008."Gold Nanorod Based Sensing of Sequence Specific HIV-1 Virus DNA using Hyper Rayleigh Scattering Spectroscopy." A European Journal of Chemistry, 14, 3896
51. Darbha, Gopala Krishna; Lee, Eumin; Glenn, Elliot; Anderson, Yolanda R and Ray, Paresh C. 2008."Miniaturized NSET Sensor for Microbial Pathogens DNA and Chemical Toxins." IEEE Sensors , 6, 693
52. Darbha, Gopala Krishna; Yu, Hongtao and Ray, Paresh C. 2008."Selective detection of mercury (II) ion using nonlinear optical properties of gold nanoparticles." Journal of American Chemical Society, 130, 8038
53. Ray, Paresh C; Darbha, Gopala Krishna; Ray, Anandhi; Hardy, William and Walker, Joshua. 2007."A gold-nanoparticle-based fluorescence resonance energy transfer probe for multiplexed hybridization detection: accurate identification of bio-agents DNA." Nanotechnology, 18, 375504
54. Darbha, Gopala Krishna; Ray, Anandhi and Ray, Paresh C. 2007."Gold nanoparticle-based miniaturized nanomaterial surface energy transfer probe for rapid ultrasensitive detection of mercury in soil, water and fish." ACS Nano, 1, 208
55. Ray, Paresh C; Darbha, Gopala Krishna; Ray, Anandhi; Walker, Joshua and Hardy, William. 2007."Gold Nanoparticle Based FRET for DNA Detection." Plasmonics, 2, 173
56. Fortner, Angela; Wang, Shuguang; Darbha, Gopala Krishna; Ray, Anandhi; Yu, Hongtao; Ray, Paresh C; Kalluru, Rajamohan R; Kim, Chan Kyu; Rai, Vinita and Singh, Jagdish P. 2007."Near infrared photo-induced DNA damage in the presence of copper-dppz complex: Evidence for the involvement of singlet oxygen." Chemical Physics Letters, 127, 434
57. Tiwari, Vidhu S.; Oleg, Tovmachenko; Darbha, Gopala Krishna; Hardy, William; Singh, Jagdish P and Ray, Paresh C. 2007."Non-resonance SERS effects of silver colloids with different shapes." Chemical Physics Letters, 446, 77
58. Ray, Paresh C; Fortner, Angela and Darbha, Gopala Krishna. 2006."Gold Nanoparticle Based FRET Assay for the Detection of DNA Cleavage." Journal of Physical Chemistry B (Letters), 110, 20745
59. Kim, Chan Kyu; Kalluru, Rajamohan R; Singh, Jagdish P; Fortner, Angela; Griffin, Jelani; Darbha, Gopala Krishna and Ray, Paresh C. 2006."Gold-nanopartilce-based miniaturized laser-induced fluorescence probe for specific DNA hybridization detection: studies on size-dependent optical properties.." Nanotechnology, 17, 3085

1. Monikh, Fazel; Darbha, Gopala Krishna; Vijver, Martina G. and Peijeneburg, Willie J.G.M.. 2022." An Overview of Methodologies for Tracing and Quantifying Microplastics in Environmental Samples", " Advances in Toxicology and Risk Assessment of Nanomaterials and Emerging Contaminants ". Springer, ISBN: 9789811691164
2. Bouby, Muriel; Brendle, J; Buchner, S; Darbha, Gopala Krishna; Gotz, R; Glugge, J.; Huber, F and Schaefer, Thorsten. 2014." Colloid/nanoparticle formation and mobility in the context of deep geolocial nuclear waste disposal", "KIT Scientific reports (KOLLORADO-2; Final Report". KIT Scientific REports, ISBN: 9783731500766
3. Darbha, Gopala Krishna; Ray, Paresh C; Tovmachenko, Oleg; Rai, Uma Shanker; Griffin, Jelani; Hardy, William; Balazero, Ana and Balarezo, Ana. 2009." Gold Nanoparticle Based Surface Energy Transfer Probe for Accurate Identification of Biological Agents DNA", "Nanoscience and Nanotechnology for Chemical and Biological Defense". American Chemical Society, ISBN: 9780841225213