Meticulous Review on Potential Nano–Sized Catalysts for Air and Water Purifiers

Document Type : Reviews


1 Sri Sankara Arts & Science College (Autonomous), Enathur, Kanchipuram 631561, Tamilnadu, India

2 Department of ICE, Sri Manakula Vinayagar Engineering College, Puducherry-605 107, India.

3 Department of Physics, KPR Institute of Engineering and Technology, Coimbatore, Tamilnadu, India.

4 School of Electrical Engineering, Department of Energy and Power Electronics, Vellore Institute of Technology, Vellore-632 014, India.

5 Institute of Materials Research, Washington State University, Pullman – 99613, USA.


This review focuses on the usage of nano–sized catalysts in eco–remedial for polluted air and water. The metal nanomaterials, metal oxide-based nano-photocatalysts, and non-metallic nanomaterials have the proficiency for inactivating viruses and purifying air. These nano catalysts have more active sites at their surface in comparison with normal materials and hence more effective catalysts. In eco-remedial, the nano–sized catalyst provides increased possibility for effective deletion of contaminants and organic impurities from air and water. Nano–sized catalyst in several forms/structures, like nano–sized particles, fibres, wires, tubes etc., serves as adsorbents and catalysts which are used for the elimination of toxic gases in air, polluted elements, biological contaminants and organic materials such as viruses, bacteria, parasites and antibiotics. Nano catalysts enhance the chemical reaction speed and can make the reaction more effective and more efficient. Nano–sized catalyst provides an improved act in eco remedial measures than other regular methods due to their high surface area and their accompanying great reactivity. Numerous nanosized materials were synthesized and designed for environmental protection purpose. Novel developments in the making of new nano–sized catalyst and procedures are stressed for action of - intake water and industrialized wastewater polluted by poisonous radionuclides, metal ions, organic and inorganic solutes, bacteria and viruses and action of air. There are two important ways through which nanotechnology is being used to reduce air pollution: a) nano-sized catalysts, which are constantly being improved and widely used in various areas and b) nano-structured membranes, with highly active adsorbing and absorbing sites.

Graphical Abstract

Meticulous Review on Potential Nano–Sized Catalysts for Air and Water Purifiers


  • The use of nano – sized catalyst in eco – remedial, nano – sized catalyst provides the possible for the effective deletion of contaminants and organic impurities from air and water.
  • Nano – sized catalyst is used for elimination of toxic gases in air, polluted elements, biological contaminants and organic materials, like viruses, bacteria, parasites and antibiotics in water and soil.
  • Nano – sized catalyst paves an improved act in eco remedial activities than other regular method due to their high surface area and their accompanying great reactivity.
  • New nano – sized catalyst and procedures for the action of intake water and industrialized wastewater polluted by poisonous radionuclides, metal ions, organic and inorganic solutes, bacteria and viruses and the action of air are stressed.



[1] Alireza Nezamzadeh - Ejhieh, Sanaz Tavakoli - Ghinani, Effect of a nano-sized natural clinoptilolite modified by the hexadecyltrimethyl ammonium surfactant on cephalexin drug delivery, C. R. Chimie, 17 (2014), 49–61.
[2] A. Vaseashta, M. Vaclavikova, S. Vaseashta, G. Gallios, P. Roy, O. Pummakarnchana, Nanostructures Train environmental pollution detection, monitoring, and remediation. Sci. Technol. Adv. Mater., 8, (2007), 47–59.
[3] F.I. Khan, A.K. Ghoshal, Removal of Volatile Organic Compounds from polluted air. J. Loss Prev. Process Ind., 13, (2000), 527–545.
[4] T. Masciangoli, W. Zhang, Environmental Technologies. Environ. Sci. Technol., 37, (2003), 102–108.
[5] P.G. Tratnyek, R.L. Johnson, Nanotechnologies for environmental cleanup. Nano Today, 1, (2006), 44–48.
[6] F.D Guerra, Campbell, M.L.; Whitehead, D.C.; Alexis, F., Tunable Properties of Functional Nanoparticles for Efficient capture of VOCs, Chemistry Select, 2, (2017), 9889–9894.
[7] F.D. Guerra, Smith, G.D.; Alexis, F.; Whitehead, D.C.A Survey of VOC Emissions from Rendering Plants. Aerosol Air Qual. Res., 17, (2017), 209–217.
[8] M. L. Campbell, Guerra, F.D.; Dhulekar, J.; Alexis, F.; Whitehead, D.C. Target-Specific Capture of Environmentally Relevant Gaseous Aldehydes and Carboxylic Acids with Functional Nanoparticles Chem. A Eur. J. 21, (2015), 14834–14842.
[9] K. J. Shah, T. Imae, Selective gas capture ability of gas-adsorbent-incorporated cellulose nanofiber films. Biomacromolecules, 17, (2016), 1653–1661.
[10]         I. Ojea-Jiménez, X. J. López, Arbiol, V. Puntes, Citrate-coated gold nanoparticles as smart scavengers for mercury (II) removal from polluted waters. ACS Nano, 6, (2012), 2253–2260.
[11]         Shirin Ghattavi, Alireza Nezamzadeh-Ejhieh, A visible light driven AgBr/g-C3N4 photocatalyst composite in methyl orange photodegradation: Focus on photoluminescence, mole ratio, synthesis method of g-C3N4 and scavengers, Compos. B: Eng., 183, (2020), 107712.
[12]         P. Kamat, D. Meisel, Nanoscience opportunities in environmental remediation. C. R. Chim., 6, (2003), 999–1007.
[13]         B. Pandey, M.H. Fulekar, Nanotechnology: Remediation Technologies to Clean Up the Environmental Pollutants. Res. J. Chem. Sci., 2, (2012), 90–96.
[14]         M. Heidari-Chaleshtori, A. Nezamzadeh-Ejhieh, Clinoptilolite nano-particles modified with aspartic acid for removal of Cu(II) from aqueous solutions: isotherms and kinetic aspects, New J. Chem., 39, (2015), 9396–9406.
[15]         H. Tong, S. Ouyang, Y. Bi, N. Umezawa, M. Oshikiri, J. Ye, Nano-photocatalytic materials: Possibilities and challenges. Adv. Mater., 24, (2012), 229–251.
[16]         X. Zhao, L. Lv, B. Pan, W. Zhang, S. Zhang, Q. Zhang, Polymer-supported nano composites for environmental application: A review. Chem. Eng. J., 170, (2011), 381–394.
[17]         Mirsalari, Seyyedeh Atefeh, Alireza Nezamzadeh-Ejhieh, The catalytic activity of the coupled CdS-AgBr nanoparticles: a brief study on characterization and its photo-decolorization activity towards methylene blue, Desalination Water Treat., 175, (2020), 263–272.
[18]         Y. C. Sharma, V. Srivastava, V. K. Singh, S. N. Kaul, Weng, C.H. Nano-adsorbents for the removal of metallic pollutants from water and wastewater. Environ. Technol., 30, (2009), 583–609.
[19]         X. Gui, Wei, J.;Wang, K.; Cao, A.; Zhu, H.; Jia, Y.; Shu, Q.; Wu, D. Carbon nanotube sponges. Adv. Mater., 22, (2010), 617–621.
[20]         L.Y. Ng, A.W. Mohammad, C.P. Leo, N. Hilal, Polymeric membranes incorporated with metal/metal oxide nanoparticles: A comprehensive review. Desalination, 308, (2013), 15–33.
[21]         Muzammil Anjuma, R. Miandad, Muhammad Waqas, F. Gehany, M. A. Barakata, Remediation of wastewater using various nano-materials, Arab. J. Chem., 12 (8), (2019), 4897-4919.
[22]         J. Theron, J. A. Walker, T. E. Cloete, Nanotechnology and water treatment: applications and emerging opportunities, Crit. Rev. Microbiol., 34(1), (2008), 43-69.
[23]         N. Savage, M. S. Diallo, Nanomaterials and water purification: opportunities and challenges. J. Nanoparticle Res., 7, (2005), 331–342.
[24]         Mohamed E. Mahmoud, Mohamed S. Abdelwaha, Eiman M. Fathallah, Design of novel nano-sorbents based on nano-magnetic iron oxide–bound-nano-silicon oxide–immobilized-triethylenetetramine for implementation in water treatment of heavy metals, Chem. Eng. J., 223, (2013), 318-327.
[25]         S. Mukhopadhyay, Nanoscale multifunctional materials: science and applications. Wiley, New York, 2011.
[26]         F. Su, C. Lu, Adsorption kinetics, thermodynamics and desorption of natural dissolved organic matter by multiwalled carbon nanotubes. J. Environ. Sci. Health A Tox Hazard Subst. Environ. Eng., 42, (2007), 1543–1552.
[27]         H. Yan, A. Gong, H. He, et. al., Adsorption of microcystins by carbon nanotubes, Chemosphere, 62, (2006), 142–148.
[28]         D.W. Breck, Zeolite molecular sieves: structure, John Wiley & Sons, New York, 1974.
[29]         M.V. Landau, L. Vradman , V. Valtchev et al., Hydrocracking of heavy vacuum gas oil with a Pt/H-beta-Al2O3 catalyst: effect of zeolite crystal size in the nanoscale range. Ind. Eng. Chem. Res., 42, (2003), 2773–2782.
[30]         J. Cravillon, Münzer S, Lohmeier S-J et al, Rapid room-temperature synthesis and characterization of nanocrystals of a prototypical zeoliticimidazolate framework, Chem. Mater. 21, (2009), 1410–1412.
[31]         S. K. Nune, P. K. Thallapally, A. Dohnalkova et. al., Synthesis and properties of nano zeoliticimidazolate frameworks. Chem. Commun. (Camb) 46, (2010), 4878–4880.
[32]         W. Song, R. E. Justice, C. A. Jones, et. al., Synthesis, characterization, and adsorption properties of nano crystalline ZSM-5. Langmuir, 20, (2004), 8301–8306.
[33]         W. Song, G. Li, V. H. Grassian, S. C. Larsen, Development of Improved materials for environmental applications: nano crystalline NaY zeolites. Environ. Sci. Technol., 39, (2005), 1214–1220.
[34]         Tahmineh Tamiji, Alireza Nezamzadeh-Ejhieh, A comprehensive study on the kinetic aspects and experimental design for the voltammetric response of a Sn(IV)-clinoptilolite carbon paste electrode towards Hg(II), J. Electroanal. Chem., 829, (2018), 95-105.
[35]         Motahare Nosuhi, Alireza Nezamzadeh-Ejhieh, High catalytic activity of Fe(II)-clinoptilolite nanoparticales for indirect voltammetric determination of dichromate: Experimental design by response surface methodology (RSM), Electrochim. Acta, 223, (2017), 47-62.
[36]         S. Ananth, T. Arumanayagam, P. Vivek, P. Murugakoothan, Enhanced photovoltaic behavior of dye sensitized solar cells fabricated using pre dye treated titanium dioxide nanoparticles, J. Mater. Sci. Mater. Electron., 27, (2016), 146–153.
[37]         Alireza Nezamzadeh-Ejhieh, Mohsen Bahrami, Investigation of the photocatalytic activity of supported ZnO-TiO2 on clinoptilolite nano-particles towards photodegradation of wastewater-contained phenol, Desalination and Water Treat., 55(4), (2015), 1096-1104.
[38]         S.M. Gupta, M. Tripathi, A review of TiO2 nanoparticles. Chinese Sci. Bull., 56, (2011), 1639–1657.
[39]         S. Ananth, P. Vivek, T. Arumanayagam, P. Murugakoothan, Pre dye treated titanium dioxide nanoparticles synthesized by modified sol–gel method for efficient dye-sensitized solar cells, Appl. Phys. A, 119, (2015), 989–995.
[40]         S. Bagheri, Muhd Julkapli N, Bee Abd Hamid S, Titanium dioxide as a catalyst support inheterogeneous catalysis. Sci World J, (2014) 2014:727496.
[41]         Bradha, M., Balakrishnan, N., Suvitha, A. et al., Experimental, computational analysis of Butein and Lanceoletin for natural dye-sensitized solar cells and stabilizing efficiency by IoT, Environ. Dev. Sustain., (2021),
[42]         H. Han, R. Bai, Buoyant photocatalyst with greatly enhanced visible-light activity prepared through a low temperature hydrothermal method. Ind. Eng. Chem. Res., 48, (2009), 2891–2898.
[43]         Y. Ma, J. Qiu, Y. Cao et. Al., Photocatalytic activity of TiO2 films grown on different substrates. Chemosphere, 44, (2001), 1087–1092.
[44]         K. V. S. Rao, A. Rachel, M. Subrahmanyam, P. Boule, Immobilization of TiO2 on pumice stone for the photocatalytic degradation of dyes and dye industry pollutants. Appl. Catal. B Environ., 46, (2003), 77–85.
[45]         M. Pelaez, A. A. de la Cruz, E. Stathatos, et. Al., Visible light-activated N-F-codoped TiO2 nanoparticles for the photocatalytic degradation of microcystin-LR in water. Catal. Today, 144, (2009), 19–25.
[46]         S. Paul, A. Choudhury, Investigation of the optical property and photocatalytic activity of mixed phase nano crystalline titania. Appl. Nanosci., 4, (2013), 839–847.
[47]         S. Kim, S.J. Hwang, W. Choi, Visible light active platinum-ion-doped TiO2 photocatalyst. J. Phys. Chem. B, 109, (2005), 24260–24267.
[48]         W. Choi, Termin A, Hoffmann M. R, The role of metal ion dopants in quantum-sized TiO2: correlation between photo reactivity and charge carrier recombination dynamics. J Phys Chem., 98, (1994), 13669–13679.
[49]         P. Eriksson, Nanofiltration extends the range of membrane filtration. Environ. Prog. 7, (1988), 58–62.
[50]         K. Sutherland, Developments in filtration: what is nanofiltration? Filtr. Sep., 45, (2008), 32–35.
[51]         Minghui Gui, Lindell E. Ormsbee, Dibakar Bhattacharyya, Reactive Functionalized Membranes for Polychlorinated Biphenyl Degradation, Ind Eng Chem Res. 52(31): (2013) 10430–10440.
[52]         B. Van der Bruggen, C. Vandecasteele, Removal of pollutants from surface water and groundwater by nanofiltration: overview of possible applications in the drinking water industry. Environ. Pollut., 122, (2003), 435–445.
[53]         S. Peltier, M. Cotte, D. Gatel, et. Al., Nano filtration: improvements of water quality in a large distribution system. Water Sci. Technol. water supply, 3, (2003), 193–200.
[54]         J.J. Qin, M. H. Oo, K. A. Kekre, Nanofiltration for recovering wastewater from a specific dyeing facility. Sep Purif. Technol., 56, (2007), 199–203.
[55]         B. Van der Bruggen, C. Vandecasteele, Distillation vs. membrane filtration: overview of process evolutions in seawater desalination. Desalination, 143, (2002), 207–218.
[56]         M. S. Mohsen, J.O. Jaber, M.D. Afonso, Desalination of brackish water by nano filtration and reverse osmosis. Desalination, 157, (2003), 167.
[57]         K. Walha, R. Ben Amar, L. Firdaous, et. al., Brackish groundwater treatment by nano filtration, reverse osmosis and electrodialysis in Tunisia: performance and cost comparison. Desalination, 207, (2007), 95–106.
[58]         P. Leonard, S. Hearty, J. Brennan et al., Advances in biosensors for detection of pathogens in food and water. Enzyme Microb. Technol., 32, (2003), 3–13.
[59]         U. Szewzyk, R. Szewzyk, W. Manz, K. H. Schleifer, Microbiological safety of drinking water. Annu. Rev. Microbiol., 54, (2000), 81–127.
[60]         Azam Rahmani-Aliabadi, Alireza Nezamzadeh-Ejhieh, A visible light FeS/Fe2S3/zeolite photocatalyst towards photodegradation of ciprofloxacin, J. Photochem. Photobiol. A: Chem., 357, (2018), 1–10.
[61]         J. J. Rook, Formation of halo forms during chlorination of natural waters. Water Treat. Exam., 23, (1974), 234–243.
[62]         K. Gopal, S. S. Tripathy, J. L. Bersillon, S. P. Dubey, Chlorination by products, their toxic dynamics and removal from drinking water. J. Hazard. Mater., 140, (2007), 1–6.
[63]         J. A. Spadaro, T. J. Berger, S. D. Barranco, et. al., Antibacterial effects of silver electrodes with weak direct current. Antimicrob. Agents Chemother., 6, (1974), 637–642.
[64]         G. Zhao, S. E. Stevens, Multiple parameters for the comprehensive evaluation of the susceptibility of Escherichia coli to the silver ion. Biometals, 11, (1998), 27–32.
[65]         O. Choi, Deng K.K, Kim N-J et al, The inhibitory effects of silver nanoparticles, silver ions, and silver chloride colloids on microbial growth. Water Res., 42, (2008), 3066–3074.
[66]         I. Sondi, B. Salopek-Sondi, Silver nanoparticles as antimicrobial agent: a case study on E. coli as a model for Gram-negative bacteria. J. Colloid Interface Sci., 275, (2004), 177–182.
[67]         J. R. Morones, J. L. Elechiguerra, A. Camacho, et. Al., The bactericidal effect of silver nanoparticles. Nanotechnology, 16, (2005), 2346–2353.
[68]         S. Pal, Y.K. Tak, J.M. Song, Does the antibacterial activity of silver nanoparticles depend on the shape of the nanoparticle? A study of the Gram-negative bacterium Escherichia coli. Appl. Environ. Microbiol., 73, (2007), 1712–1720.
[69]         T. A. Dankovich, Gray D.G, Bactericidal paper impregnated with silver nanoparticles for point-of-use water treatment. Environ. Sci. Technol., 45, (2011), 1992–1998.
[70]         S. O. Hay, T. Obee, Z. Luo, T. Jiang, Y. Meng, J. He, S. C. Murphy, S. Suib, The viability of photocatalysis for air purification, Molecules. 14;20(1): (2015), 1319-1356.
[71]         P. Murugakoothan, S Ananth, P Vivek, T Arumanayagam, Natural Dye Extracts of Areca Catechu Nut as dye Sensitizer for Titanium dioxide Based Dye Sensitized Solar Cells, J. Nano Elect. Phy., 6(1), (2014), 01003.
[72]         Abbas Noruozi, Alireza Nezamzadeh-Ejhieh, Preparation, characterization, and investigation of the catalytic property of α-Fe2O3-ZnO nanoparticles in the photodegradation and mineralization of methylene blue, Chem. Phys. Lett., 752, (2020), 137587.
[73]         Hiren K.Patel, Rishee K.Kalaria, Mehul R.Khimani, Removal of Toxic Pollutants Through Microbiological and Tertiary Treatment:New Perspectives, 2020, 515-547.
[74]         Nafiseh Pourshirband, AlirezaNezamzadeh-Ejhieh, An efficient Z-scheme CdS/g-C3N4 nano catalyst in methyl orange photodegradation: Focus on the scavenging agent and mechanism, J. Mol. Liq., 322, (2021), 107712.
[75]         Ailin Yousefi, Alireza Nezamzadeh-Ejhieh, Mehrosadat Mirmohammadi, SnO2-BiVO4 mixed catalyst: Characterization and kinetics study of the photodegradation of phenazopyridine, Environ. Technol. & Innovation, 22, (2021), 101433.
[76]         K. Watlington, Emerging nanotechnologies for site remediation and wastewater treatment, National Network for Environmental Management Studies Fellow, North Carolina State University, 2005.
[77]         H.C. Liang, X.Z. Li, J. Nowotny, Photocatalytic properties of TiO2 nanotubes, Solid State Phenom., 162, (2010), 295–328.
[78]         P. Kamat, R. Huehn, and R. Nicolaescu, A “Sense and Shoot” approach for photo catalytic degradation of organic contaminants in water, J. Phys. Chem. B, 106, (2002), 788–794.
[79]         Javad Safaei-Ghomi, Hossein Shahbazi-Alavi, Mohammad Reza Saberi-Moghadam, Abolfazl Ziarati, A recyclable, efficient heterogeneous catalyst for the synthesis of 1,6-diamino-2-oxo-4-phenyl-1,2-dihydropyridine-3,5-dicarbonitrile derivatives via a multi-component reaction, Iran. J. Catal., 4 (4), (2014), 289-294.
[80]         Mohamadreza Massoudinejad, Mohsen Sadani, Zeinab Gholami, Zeinab Rahmati, Masoume Javaheri, Hassan Keramati, Mansour Sarafraz, Moayed Avazpour, Sabah Shiri, Iran. J. Catal., 9(2), (2019), 121-132.
[81]         Yangyang Guo, Yuran Li, Tingyu Zhu, Jian Wang, Meng Ye, Modeling of dioxin adsorption on activated carbon, Chem. Eng. J., 283, (2016), 1210-1215.
[82]         P.S. Kulkarni, J.G. Crespo, A.M. Afonso, Dioxinssources and current remediation technologies – A review, Environ. Intl., 34, (2008), 139–153.
[83]         G. Wielgosi´nsk i, The possibilities of reduction of polychlorinateddibenzo-p-dioxins and polychlorinated dibenzofuransemission, Intl. J. Chem. Eng., (2010), article ID 392175.
[84]         J. J. Cudahy, R.W. Helsel, Removal of products of incomplete combustion with carbon, Waste Manag., 20, (2000), 339–345.
[85]         R.Q. Long, R.T. Yang, Carbon nanotubes as a superiorsorbent for removal dioxine, J. Amer. Chem. Soc., 123, (2001), 2058–2059.
[86]         B. Bhushan., Springer Handbook of Nanotechnology, 3rd edition, Springer, New York, 2010.
[87]         Safoura Sharafzadeh, Alireza Nezamzadeh-Ejhieh, Using of anionic adsorption property of a surfactant modified clinoptilolite nano-particles in modification of carbon paste electrode as effective ingredient for determination of anionic ascorbic acid species in presence of cationic dopamine species, Electrochim. Acta, 184, (2015), 371–380.
[88]         R.Q. Long, R.T. Yang, Carbon nanotubes as a superiorsorbent for nitrogen oxides, Ind. Eng. Chem. Res., 40, (2001), 4288–4291.
[89]         I. Mochida, Y. Kawabuchi, S. Kawano, Y. Matsumura, M. Yoshikawa, High catalytic activity of pitch-based activated carbon fibers of moderate surface area for oxidation of NO to NO2 at room temperature, Fuel, 76, (1997), 543–548.
[90]         C. M. White, B. R. Strazisar, E. J. Granite, J. S. Hoffman, H. W. Pennline, Separation and capture of CO2 from large stationary sources and sequestration in geological formations-coal beds and deep saline aquifers, J. Air Waste Manag. Assoc., 53, (2003), 645–715.
[91]         D. Aaron and Tsouris D., Separation of CO2 from flue gases:a review, Separat. Sci. Technol. 40 (2005), 321–348.
[92]         Jila Talat Mehrabad, Mohammad Partovi, Farzad Arjomandi Rad, Rana Khalilnezhad, Nitrogen doped TiO2  for efficient visible light photocatalytic dye degradation, Iran. J. Catal., 9(3), (2019), 233-239.
[93]         Akbar Eslami, Ali Oghazyan, Mansour Sarafraz, Magnetically separable MgFe2O4 nanoparticle for efficient catalytic ozonation of organic pollutants, Iran. J. Catal., 8(2), (2018), 95-102.
[94]         B. Metz, O. Davidson, H. de Coninck, M. Loos, L. Meyer, Carbon dioxide capture and storage, Cambridge University Press, Cambridge, 2005.
[95]         A. Indarto, A. Giordana, G. Ghigo, and G, Tonachini, Formation of PAHs and soot platelets: multi configuration theoretical study of the key step in the ring closure-radical breeding polyyne-based mechanism, J. Phys. Org. Chem., 23, (2009), 400–410.
[96]         A. Indarto, Heterogeneous reactions of HONO formationfrom NO2 and HNO3: a review, Res. Chem Interned. 38, (2012), 1029–1041.
[97]         R. M. Santiago, A. Indarto, A density functional theory study of phenyl formation initiated by ethynyl radical (C2H·) and ethyne (C2H2), J. Mol. Model., 14, (2008), 1203–1208.
[98]         D. Natalia, A. Indarto, Aromatic formation from vinyl radical and acetylene. A mechanistic study, Bull. Korean Chem. Soc., 29, (2008), 319–322.
[99]         A. Indarto, Soot growing mechanism from polyynes: a review, Environ. Eng. Sci., 26, (2009), 251–257.
[100]      A.K. Sinha, K.Suzuki, Novel mesoporous chromiumoxide for VOCs elimination, Appl. Catal. B: Environ., 70, (2007), 417–422.
[101]      Probir Kumar Sarkar, Nabarun Polley, Subhananda Chakrabarti, Peter Lemmens, Samir Kumar Pal, Nanosurface Energy Transfer Based Highly Selective and Ultrasensitive “Turn on” Fluorescence Mercury Sensor, ACS Sens., 1, (2016), 789−797.
[102]      C. Buzea, BlandinoI.I.P, and RobbieK., Nanomaterialsand nanoparticles: Sources and toxicity, Biointerphases. 2, (2007), MR17–MR172.
[103]      Ian Sofian Yunus, Harwin , Adi Kurniawan, Dendy Adityawarman & Antonius Indarto, Nanotechnologies in water and air pollution treatment, Environmental Technology Reviews, 1(1), (2012), 136-148.
[104]      F. Wickson, K. N. Nielsen, D.Quist, Nano and the environment: potential risks, real uncertainties and urgentissues, GenØk Biosafety Brief., 2011/01.
[105]      M.A.H. Hyder, Nanotechnology and environment: potential application and environmental implications of nanotechnology. Master thesis, Technical University of Hamburg Harburg, Germany, 2003.