1. K. Qi, S. Karthikeyan, W. Kim, F.A. Marzouqi, I.S. Al-Khusaibi, Y. Kim, R. Selvaraj, Hydrothermal synthesis of SnS2 nanocrystals for photocatalytic degradation of 2,4,6-trichlorophenol under white LED light irradiation, Desal. Water Treat., 92 (2017) 108–115.
  2. G. Enaime, A. Baçaoui, A. Yaacoubi, M. Lübken, Biochar for wastewater treatment—conversion technologies and applications, Appl. Sci. Basel., 10 (2020) 492, doi: 10.3390/app10103492.
  3. C. Arora, P. Kumar, S. Soni, J. Mittal, A. Mittal, B. Singh, Efficient removal of malachite green dye from aqueous solution using Curcuma caesia based activated carbon, Desal. Water Treat., 195 (2020) 341–352.
  4. K. Qi, S. Liu, Q. Meng, Photocatalytic performance of TiO2 nanocrystals with/without oxygen defects, Chin. J. Catal., 39 (2018) 867–875.
  5. P.O. Oladoye, T.O. Ajiboye, E.O. Omotola, O.J. Oyewola, Methylene blue dye: toxicity and potential elimination technology from wastewater, Results Eng., 16 (2022) 100678, doi: 10.1016/j.rineng.2022.100678.
  6. L. Liu, Y. Li, S.S. Fan, Preparation of KOH and H3PO4 modified biochar and its application in methylene blue removal from aqueous solution, Processes, 7 (2019) 891, doi: 10.3390/ pr7120891.
  7. J. Mittal, R. Ahmad, A. Mittal, Kahwa tea (Camellia sinensis) carbon — a novel and green low-cost adsorbent for the sequestration of titan yellow dye from its aqueous solutions, Desal. Water Treat., 227 (2021) 404–411.
  8. H. Daraei, A. Mittal, Investigation of adsorption performance of activated carbon prepared from waste tire for the removal of methylene blue dye from wastewater, Desal. Water Treat., 90 (2017) 294–298.
  9. K. Zhang, J. Zhang, X. He, Y. Zhao, A. Zada, A. Peng, K. Qi, Fe3O4@MIL-100(Fe) modified ZnS nanoparticles with enhanced sonocatalytic degradation of tetracycline antibiotic in water, Ultrason. Sonochem., 95 (2023) 106409, doi: 10.1016/j.ultsonch.2023.106409.
  10. Y. Ma, X. Aihemaiti, K. Qi, S. Wang, Y. Shi, Z. Wang, M. Gao, F. Gai, Y. Qiu, Construction of oxygen-vacancies-rich S-scheme BaTiO3/red phosphorous heterojunction for enhanced photocatalytic activity, J. Mater. Sci. Technol., 156 (2023) 217–229.
  11. R. Kayisier, Y. Ma, K. Qi, L. Xiao, Y. Wang, Y. Li, J. Li, Y. Li, Synergetic removal of mixed pollutants over cerium oxide/red phosphorus heterojunction composite, Vacuum, 213 (2023) 112068, doi: 10.1016/j.vacuum.2023.112068.
  12. P. Wony, M. Runowski, S. Sobczak, A. Szczeszak, S.J.C.I. Lis, Corrigendum to high-pressure luminescence of monoclinic and triclinic GdBO3: Eu3+, Ceram. Int., 46 (2020) 26368–26376.
  13. K. Qi, C. Zhuang, M. Zhang, P. Gholami, A. Khataee, Sonochemical synthesis of photocatalysts and their applications, J. Mater. Sci. Technol., 123 (2022) 243–256.
  14. J. Zhang, A. Bifulco, P. Amato, C. Imparato, K. Qi, Copper indium sulfide quantum dots in photocatalysis, J. Colloid Interface Sci., 638 (2023) 193–219.
  15. K. Qi, X. Xing, A. Zada, M. Li, Q. Wang, S.-y. Liu, H. Lin, G. Wang, Transition metal doped ZnO nanoparticles with enhanced photocatalytic and antibacterial performances: experimental and DFT studies, Ceram. Int., 46 (2020) 1494–1502.
  16. N. Cui, A. Zada, J. Song, Y. Yang, M. Liu, Y. Wang, Y. Wu, K. Qi, R. Selvaraj, S.-y. Liu, G. Jin, Plasmon-induced
    ZnO-Ag/AgCl photocatalyst for degradation of tetracycline hydrochloride, Desal. Water Treat., 245 (2022) 247–257.
  17. J. Zhang, Y. Zhao, K. Zhang, A. Zada, K. Qi, Sonocatalytic degradation of tetracycline hydrochloride with
    CoFe2O4/g-C3N4 composite, Ultrason. Sonochem., 94 (2023) 106325, doi: 10.1016/j.ultsonch.2023.106325.
  18. L. Sun, Y. Wang, L. He, J. Guo, Q. Deng, X. Zhao, Y. Yan, K. Qi, Effect of cobalt doping on the photocatalytic performance of AgInS2 for organic pollutant degradation and hydrogen production, J. Alloys Compd., 926 (2022) 166859, doi: 10.1016/j. jallcom.2022.166859.
  19. K. Qi, S. Liu, R. Wang, Z. Chen, R. Selvaraj, Pt/g-C3N4 composites for photocatalytic H2 production and OH formation, Desal. Water Treat., 154 (2019) 312–319.
  20. K. Qi, S.-y. Liu, R. Selvaraj, W. Wang, Z. Yan, Comparison of Pt and Ag as co-catalyst on g-C3N4 for improving photocatalytic activity: experimental and DFT studies, Desal. Water Treat., 153 (2019) 244–252.
  21. A. Patel, S. Soni, J. Mittal, A. Mittal, C. Arora, Sequestration of crystal violet from aqueous solution using ash of black turmeric rhizome, Desal. Water Treat., 220 (2021) 342–352.
  22. J. Mittal, R. Ahmad, M.O. Ejaz, A. Mariyam, A. Mittal, A novel, eco-friendly bio-nanocomposite (Alg-Cst/Kal) for the adsorptive removal of crystal violet dye from its aqueous solutions, Int. J. Phytorem., 24 (2022) 796–807.
  23. A. Mariyam, J. Mittal, F. Sakina, R.T. Baker, A.K. Sharma, A. Mittal, Efficient batch and fixed-bed sequestration of a basic dye using a novel variant of ordered mesoporous carbon as adsorbent, Arabian J. Chem., 14 (2021) 103186, doi: 10.1016/j.arabjc.2021.103186.
  24. X. He, J. Xia, J. He, K. Qi, A. Peng, Y. Liu, Highly efficient capture of heavy metal ions on amine-functionalized porous polymer gels, Gels, 9 (2023) 297, doi: 10.3390/gels9040297.
  25. R. Ahmad, I. Hasan, A. Mittal, Adsorption of Cr(VI) and Cd(II) on chitosan grafted polyaniline-OMMT nanocomposite: isotherms, kinetics and thermodynamics studies, Desal. Water Treat., 58 (2017) 144–153.
  26. J. Mittal, R. Ahmad, A. Mariyam, V.K. Gupta, A. Mittal, Expeditious and enhanced sequestration of heavy metal ions from aqueous environment by papaya peel carbon: a green and low-cost adsorbent, Desal. Water Treat., 210 (2021) 365–376.
  27. V. Kumar, P. Saharan, A.K. Sharma, A. Umar, I. Kaushal, A. Mittal, Y. Al-Hadeethi, B. Rashad, Silver doped manganese oxide-carbon nanotube nanocomposite for enhanced dye-sequestration: isotherm studies and RSM modelling approach, Ceram. Int., 46 (2020) 10309–10319.
  28. C.T. Nguyen, D. Tungtakanpoung, V.T. Tra, P. Kajitvichyanukul, Kinetic, isotherm and mechanism in paraquat removal by adsorption process using corn cob biochar produced from different pyrolysis conditions, Case Stud. Chem. Environ. Eng., 6 (2022) 100248, doi: 10.1016/j.cscee.2022.100248.
  29. Y. Zhang, S. Fan, T. Liu, W. Fu, B. Li, A review of biochar prepared by microwave-assisted pyrolysis of organic wastes, Sustainable Energy Technol. Assess., 50 (2022) 101873, doi: 10.1016/j.seta.2021.101873.
  30. J. Hoslett, H. Ghazal, N. Mohamad, H. Jouhara, Removal of methylene blue from aqueous solutions by biochar prepared from the pyrolysis of mixed municipal discarded material, Sci. Total Environ., 714 (2020) 136832, doi: 10.1016/j. scitotenv.2020.136832.
  31. K. Weber, P. Quicker, Properties of biochar, Fuel, 217 (2018) 240–261.
  32. Z. Jin, B. Wang, L. Ma, P. Fu, L. Xie, X. Jiang, W. Jiang, Air preoxidation induced high yield N-doped porous biochar for improving toluene adsorption, Chem. Eng. J., 385 (2020) 123843, doi: 10.1016/j.cej.2019.123843.
  33. P. Zhang, D. O’Connor, Y. Wang, L. Jiang, T. Xia, L. Wang, D.C.W. Tsang, Y.S. Ok, D. Hou, A green biochar/iron oxide composite for methylene blue removal, J. Hazard. Mater., 384 (2020) 121286, doi: 10.1016/j.jhazmat.2019.121286.
  34. S. Soni, P.K. Bajpai, J. Mittal, C. Arora, Utilisation of cobalt doped iron-based MOF for enhanced removal and recovery of methylene blue dye from wastewater, J. Mol. Liq., 314 (2020) 113642, doi: 10.1016/j.molliq.2020.113642.
  35. I. Khalaf Erabee, Removal of ammonia nitrogen NH-N and hexavalent chromium (VI) from wastewater using agricultural waste activated carbon, Orient. J. Chem., 34 (2018) 1033–1040.
  36. C. Arora, S. Soni, S. Sahu, J. Mittal, P. Kumar, P.K. Bajpai, Iron based metal organic framework for efficient removal of methylene blue dye from industrial waste, J. Mol. Liq., 284 (2019) 343–352.
  37. S. Fan, Y. Wang, Z. Wang, J. Tang, J. Tang, X. Li, Removal of methylene blue from aqueous solution by sewage sludge-derived biochar: adsorption kinetics, equilibrium, thermodynamics and mechanism, J. Environ. Chem. Eng., 5 (2017) 601–611.
  38. H. Chen, W. Li, J. Wang, H. Xu, Y. Liu, Z. Zhang, Y. Li, Y. Zhang, Adsorption of cadmium and lead ions by phosphoric acidmodified biochar generated from chicken feather: selective adsorption and influence of dissolved organic matter, Bioresour. Technol., 292 (2019) 121948, doi: 10.1016/j.biortech.2019.121948.
  39. Q. Huang, S. Song, Z. Chen, B. Hu, J. Chen, X. Wang, Biocharbased materials and their applications in removal of organic contaminants from wastewater: state-of-the-art review, Bioresour. Technol., 1 (2019) 45–73.