Synthesis and characterization of Ni-doped CaTiO3 nano-powders and their potential for the removal of Cd from wastewaters

Document Type : Research Article


Advance Materials Research Center, Department of Materials Engineering, Najafabad Branch, Islamic Azad University, Najafabad, Iran


A simple method was applied to construct Ni-doped CaTiO3 nano-powders from commercial CaCO3 and TiO2, characterized by XRD, FE-SEM, and FT-IR. The sample was composed of small grains with an average size of 78 nm. This method could be a useful, inexpensive, and efficient tool for the preparation of Ni-doped CaTiO3 nano-powders. The prepared sample was used for the removal of Cd2+ from water media. Results indicated that Cd2+ removal by Ni-doped CaTiO3 nano-powders was very efficient (100% removal yield) when the pH was adjusted to 4.5, the catalyst dosage amounted to 0.05 g, and the Cd2+ solution concentration was 60 mg.L-1. A pseudo-second-order kinetic model described the kinetics of Cd2+ removal.

Graphical Abstract

Synthesis and characterization of Ni-doped CaTiO3 nano-powders and their potential for the removal of Cd from wastewaters


  • A simple method was applied for the construction of Ni-doped CaTiO3 nano-powders from commercial CaCO3 and TiO2.
  • The as-prepared sample was characterized by XRD, FE-SEM, and FT-IR techniques.
  • The sample composed of small grains with an average size of 78 nm.
  • The method could be a useful, inexpensive and efficient tool for the preparation of  Ni-doped CaTiO3 nano-powders.
  • The Ni-doped CaTiO3 nano-powder was most efficient for the removal of Cd2+ from water media. 


Main Subjects

[1] Ekubatsion, L. H., Thriveni, T., & Ahn, J. W. (2021). Removal of Cd2+ and Pb2+ from Wastewater through Sequent Addition of KR-Slag, Ca(OH)2 Derived from Eggshells and CO2 Gas. ACS Omega, 6(42) 27600-27609.
[2] Taseidifar, M., Makavipour, F., Pashley, R. M., & Rahman, A. (2017). Removal of Heavy Metal Ions from Water Using Ion Flotation. Environ. Technol. Innov. 8, 182-190.
[3] Pyrzynska, K. (2019). Removal of Cadmium from Wastewaters withLow-Cost Adsorbents. J. Environ. Chem. Eng. 7(1) 102795.
[4] Shrestha, R., Ban, S., Devkota, S., Sharma, S., Joshi, R., Prasad Tiwari, A., Kim, H. Y., & Joshi, M. K. (2021). Technological Trends in Heavy Metals Removal from Industrial Wastewater: A Review. J. Environ. Chem. Eng. 9(4) 105688.
[5] Kumar, V., Dwivedi, S. K., & Oh, S. (2022). A Review on Microbial-Integrated Techniques as Promising Cleaner Option for Removal of Chromium, Cadmium and Lead from Industrial Wastewater. J. Water Process Eng. 47, 102727.
[6] Zhu, Z., Yang, Y., Fan, Y., Zhang, L., Tang, S., Zhu, Y., & Zhou, X. (2022). Strontium-Doped Hydroxyapatite as An Efficient Adsorbent for Cd(II) Removal from Wastewater: Performance, Kinetics, and Mechanism. Environ. Technol. Innov. 28, 102575.
[7] Zhang, J., Yan, M., Sun, G., & Liu, K. (2021). Simultaneous Removal of Cu(II), Cd(II), Cr(VI), and Rhodamine B in Wastewater Using TiO2 Nanofibers Membrane Loaded on Porous Fly Ash Ceramic Support. Sep. Purif. Technol. 272, 118888.
[8] Ma, Y., Deng, Z., Li, Z., Lin, Q., Wu, Y., & Dou, W. (2021). Adsorption Characteristics and Mechanism for K2Ti4O9 Whiskers Removal of Pb(II), Cd(II), and Cu(II) Cations in Wastewater. J. Environ. Chem. Eng. 9, 106236.
[9] Nordberg, G., Fowler, B., & Nordberg, M. (2014). Handbook on the Toxicology of Metals. 4th Edition, Academic Press.
[10] Sharma, S. K. (2015). Heavy Metals in Water: Presence, Removal and Safety. Royal Society of Chemistry, AP-Medical.
[11] Alslaibi, T. M., Abustan, I., Ahmad, M. A., & Foul, A. A. (2013). Cadmium Removal from Aqueous Solution Using Microwaved Olive Stone Activated Carbon. J. Environ. Chem. Eng. 1(3) 589-599.
[12] Chai, W. S., Cheun, J. Y., Kumar, P. S., Mubashir, M., Majeed, Z., Banat, F., Ho, S.-H., & Show, P. L. (2021). A Review on Conventional and Novel Materials Towards Heavy Metal Adsorption in Wastewater Treatment Application. J. Cleaner Prod. 296, 126589.
[13] Křenek, T., Kovářík, T., Pola, J., Stich, T., & Docheva, D. (2021). Nano and Micro-Forms of Calcium Titanate: Synthesis, Properties and Application. Open Ceram. 8, 100177.
[14] Gaikwad, S. S., Borhade, A. V., & Gaikwad, V. B. (2012). A Green Chemistry Approach for Synthesis of CaTiO3 Photocatalyst: Its Effects on Degradation of Methylene Blue, Phytotoxicity and Microbial Study. Der Pharma Chem. 4(1) 184-193.
[15] Gralik, G., Thomsen, A. E., Moraes, C. A., Raupp-Pereira, F., & Hotza, D. (2014). Processing and Characterization of CaTiO3 Perovskite Ceramics.  Process. Appl. Ceram. 8(2) 53-57. 
[16] Khan, A., Kumar Singh, P., Kumar Saharan, V., & George, S. (2021). Synthesis of Calcium Titanate from Marble Waste Powder for the Degradation of Congo Red Dye. Mater. Today- Proc. 43 (Part 2) 995-1002.
[17] Paramanik, L., Subudhi, S., & Parida, K. M. (2022). Visible Light Active Titanate Perovskites: An Overview on Its Synthesis, Characterization and Photocatalytic Applications. Mater. Res. Bull. 155, 111965. 
[18] Solís, R. R., Bedia, J., Rodríguez, J. J., & Belver, C. (2021). A Review on Alkaline Earth Metal Titanates for Applications in Photocatalytic Water Purification. Chem. Eng. J. 409, 128110.
[19] Khosravian, P., Ghashang, M., & Ghayoor, H. (2017). Effective Removal of Penicillin from Aqueous Solution Using Zinc Oxide/Natural-Zeolite Composite Nano-Powders Prepared via Ball Milling Technique. Recent Pat. Nanotech. 11(2) 154-164.
[20] Zare, M., Ghashang, M., & Saffar-Teluri, A. (2016). BaO-ZnO Nano-composite Efficient Catalyst for the Photocatalytic Degradation of 4-Chlorophenol. Biointerface Res. Appl. Chem. 6, 1049-1052.
[21] Es-sahbany, H., Berradi, M., Nkhili, S., Hsissou, R., Allaoui, M., Loutfi, M., Bassir, D., Belfaquir, M., & El Youbi, M. (2019). Removal of Heavy Metals (Nickel) Contained in Wastewater-Models by the Adsorption Technique on Natural Clay. Mater. Today Proc. 13 (Part 3) 866-875. 
[22] Es-sahbany, H., Nkhili, S., Berradi, M., Nassali, H., Aziane, N., Befaquir, M., & Elyoubi, M. (2017). Performance of Adsorption of Heavy Metals Contained in Model Wastewater Solutions by Two Types of Moroccan Clay: Type of Copper. Appl. J. Environ. Eng. Sci. 3(1) 1-6.
[23] Simić, M., Petrović, J., Šoštarić, T., Ercegovi´c, M., Milojković, J., Lopićić, Z., & Kojić, M. (2022). A Mechanism Assessment and Differences of Cadmium Adsorption on Raw and Alkali-Modified Agricultural Waste. Processes 10, 1957. 
[24] Choudhury, P. R., Majumdar, S., Sahoo, G. C., Saha, S., & Mondal, P. (2018). High Pressure Ultrafiltration CuO/Hydroxyethyl Cellulose Composite Ceramic Membrane for Separation of Cr (VI) and Pb (II) from Contaminated Water. Chem. Eng. J. 336, 570-578. 
[25] Zhu, L., Ji, J., Wang, S., Xu, C., Yang, K., & Xu, M. (2018). Removal of Pb(II) from Wastewater Using Al2O3-NaA Zeolite Composite Hollow Fiber Membranes Synthesized from Solid Waste Coal Fly Ash. Chemosphere, 206, 278-284.