DOI: https://doi.org/10.9767/bcrec.20675

Enhanced Acid Orange 7 Adsorption by a Novel Organophosphorus-Modified Bentonite: Performance and Mechanistic Insights

1Laboratoire de Structure, Elaboration et Applications des Matériaux Moléculaires (SEA2M), Département de Génie des Procédés, Faculté des Sciences et de la Technologie, Université Abdelhamid Ibn Badis, Mostaganem, Algeria

2Laboratoire de Structure, Elaboration et Applications des Matériaux Moléculaires (SEA2M), Département de Génie des Procédés, Faculté des Sciences et de la Technologie, Université Ahmed Zabana, Relizane, Algeria

3Department of Physics, Sakarya University, 54147-Kampus, Sakarya, Turkey

Received: 21 Feb 2026; Revised: 31 Mar 2026; Accepted: 1 Apr 2026; Available online: 5 Apr 2026; Published: 30 Oct 2026.
Editor(s): Istadi Istadi
Open Access Copyright (c) 2026 by Authors, Published by BCREC Publishing Group
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Abstract

Water contamination by Acid Orange 7 (AO7), a widely used anionic azo dye in the textile industry, represents a major environmental concern due to its persistence and potential to generate toxic aromatic amines. Herein, we report the synthesis of a novel organobentonite (BPA6) via intercalation of phenylphosphonic acid into bentonite, an organoclay previously unexplored for pollutant removal. XRD analysis revealed an expansion of the basal spacing from 10 to 15.4 Å with an intercalation rate of 86%, while FTIR and SEM confirmed structural reorganization and successful incorporation of phenylphosphonic functional groups. The modification increased interlayer accessibility and introduced additional P–OH active sites, enhancing hydrogen-bond donor density. Consequently, BPA6 achieved a maximum adsorption capacity of 123.3 mg.g⁻¹ at 55 °C, significantly exceeding raw bentonite. The kinetics were well described by the pseudo-second-order model, while the equilibrium data fit best with the Langmuir–Freundlich model. Thermodynamic analysis indicated a predominantly physisorption-driven process. BPA6 maintained stable performance over multiple regeneration cycles. Mechanistic insight was obtained by correlating spectroscopic, adsorption, and thermodynamic data, revealing a clear relationship between structure, surface chemistry, interactions, and performance. The adsorption mechanism is primarily governed by hydrogen bonding between Si–OH and intercalated P–OH moieties and the sulfonate and amine moieties of AO7. Phenylphosphonic acid intercalation optimizes clay surface chemistry, enhancing dye adsorption by BPA6 and highlighting its potential as a sustainable, high-performance wastewater adsorbent. Copyright © 2026 by Authors, Published by BCREC Publishing Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Keywords: Organobentonite; Phenylphosphonic acid; Characterization; Acid Orange 7; Adsorption; Mechanism
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Section: Original Research Articles
Language : EN
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  1. Sahu, A., Poler, J.C. (2024). Removal and degradation of dyes from textile industry wastewater: Benchmarking recent advancements, toxicity assessment and cost analysis of treatment processes. Journal of Environmental Chemical Engineering, 12(5), 113754. DOI: 10.1016/j.jece.2024.113754
  2. Kavitha, G., Govindhan, M., Premkumar, S. (2025). Dye pollution and its implications for human health, aquatic ecosystems, and sustainable wastewater treatment: A comprehensive review. Journal of Water Process Engineering, 80, 109071. DOI: 10.1016/j.jwpe.2025.109071
  3. Sudarshan, S., Harikrishnan, S., Rathi Bhuvaneswari, G., Alamelu, V., Aanand, S., Rajasekar, A., Govarthanan, M. (2023). Impact of textile dyes on human health and bioremediation of textile industry effluent using microorganisms: Current status and future prospects. Journal of Applied Microbiology, 134, 1–23. DOI: 10.1093/jambio/lxac064
  4. Kumar, M., Mishra, A., Patel, S.K., Kushwaha, J., Singh, S., Mishra, V., Singh, D., Singh, V., Giri, B.S., Singhania, R.R., Singh, D. (2025). Environmental impacts and strategies for bioremediation of dye-containing wastewater. Bioengineering, 12, 1043. DOI: 10.3390/bioengineering12101043
  5. Cai, J., Xie, Q., Ding, Z., Cao, J., Liu, J., Xia, J., Yang, J. (2024). Enhanced mechanism of AO7 degradation by electrochemical activation of persulfate at carbon felt and electrogenerated H₂O₂ carbon black modified cathodes in divided cell. International Journal of Electrochemical Science, 12, 100861. DOI: 10.1016/j.ijoes.2024.100861
  6. Strebel, A., Behringer, M., Hilbig, H., Machner, A., Helmreich, B. (2024). Anionic azo dyes and their removal from textile wastewater through adsorption by various adsorbents: A critical review. Frontiers in Environmental Engineering, 3, 1347981. DOI: 10.3389/fenve.2024.1347981
  7. Vieira, J.C.B., Frizzo, C.P., de Sousa, H.C., Dias, A.M.A., Pereira, J.F.B. (2026). Adsorption of dyes from aqueous solutions using chitosan-based materials functionalized with ionic liquids: Acid Orange 7 as a case-of-study. International Journal of Biological Macromolecules, 342, 150287. DOI: 10.1016/j.ijbiomac.2026.150287
  8. Yoon, S., Calvo, J.J., So, M.C. (2018). Removal of Acid Orange 7 from aqueous solution by metal-organic frameworks. Crystals, 9(1), 17. DOI: 10.3390/cryst9010017
  9. Bellettini, G.C., Souza-Pereira, M., Benetti, R. M., Elyseu, F., Dal-Bó, A.G., Bernardin, A.M. (2026). Stress test of magnetite nanoparticles synthesized by controlled precipitation for the degradation of dyes under UV and visible radiation. Materials Chemistry and Physics, 348(1), 131626. DOI: 10.1016/j.matchemphys.2025.131626
  10. Tang, H., Wu, Z., Zhang, J., Su, R., Zhu, X., Dong, Z. (2025). Novel synthesis of nano-cerium oxide using ultrasonic microreactor: Process optimization and AO7 degradation. Ceramics International, 51(3), 3283–3292. DOI: 10.1016/j.ceramint.2024.11.307
  11. Baghani, M., Soltanian, M., Sarrafzadeh, M.H. (2026). Energy optimization in electrochemical oxidation for wastewater treatment using interpretable machine learning. Chemical Engineering Journal Advances, 25, 101044. DOI: 10.1016/j.ceja.2026.101044
  12. Liang, P., Rivallin, M., Cerneaux, S., Lacour, S., Petit, E., Cretin, M. (2016). Coupling cathodic Electro‑Fenton reaction to membrane filtration for AO7 dye degradation: A successful feasibility study. Journal of Membrane Science, 510, 182–190. DOI: 10.1016/j.memsci.2016.02.071
  13. Ali, K., Zeidan, H., Ben Amar, R. (2023). Evaluation of the use of agricultural waste materials as low-cost and ecofriendly sorbents to remove dyes from water: A review. Desalination and Water Treatment, 302, 231–252. DOI: 10.5004/dwt.2023.29725
  14. Cheng, S., Zhao, S., Xing, B., Liu, Y., Zhang, C., Xia, H. (2022). Preparation of magnetic adsorbent-photocatalyst composites for dye removal by synergistic effect of adsorption and photocatalysis. Journal of Cleaner Production, 348, 131301. DOI: 10.1016/j.jclepro.2022.131301
  15. Crini, G. (2006). Non-conventional low-cost adsorbents for dye removal: A review. Bioresource Technology, 97(9), 1061–1085. DOI: 10.1016/j.biortech.2005.05.001
  16. Bendenia, S., Marouf-Khelifa, K., Batonneau-Gener, I., Derriche, Z., Khelifa, A. (2011). Adsorptive properties of X zeolites modified by transition metal cation exchange. Adsorption, 17, 361–370. DOI: 10.1007/s10450-011-9336-4
  17. Khelifa, A., Hasnaoui, A., Derriche, Z., Bengueddach, A. (2001). Adsorption de CO₂ par des zéolithes X échangées par des cations bivalents. Annales de Chimie Science des Matériaux, 26, 55–66. DOI:
  18. 1016/S0151-9107(01)80046-5
  19. Halloui, C.L., Khelifa, M., Ziane, S., Marouf-Khelifa, K., Khelifa, A. (2025). Mechanistic understanding of the enhanced adsorption of diclofenac on a heat-treated and acid-leached halloysite. International Journal of Environmental Analytical Chemistry, 105(4), 727–745. DOI: 10.1080/03067319.2023.2270425
  20. Ziane, S., Marouf-Khelifa, K., Benmekki, H., Schott, J., Khelifa, A. (2015). Removal of a reactive textile azo dye by dolomitic solids: Kinetic, equilibrium, thermodynamic, and FTIR studies. Desalination and Water Treatment, 56, 695–708. DOI: 10.1080/19443994.2014.941308
  21. Boulett, A., Roa, K., Pizarro, G., Marambio, O., Santander, P., Sánchez, J. (2025). Polymeric resins with sulfonic or quaternary ammonium groups used as high-capacity adsorbents of tetracycline. Reactive and Functional Polymers, 217, 106487. DOI: 10.1016/j.reactfunctpolym.2025.106487
  22. Jung, S., Jung, M., Yoon, J., Kim, J., Jin, H.J., Kwak, H.W. (2024). Chitosan-derived activated carbon/chitosan composite beads for adsorptive removal of methylene blue and acid orange 7 dyes. Reactive and Functional Polymers, 204, 106028. DOI: 10.1016/j.reactfunctpolym.2024.106028
  23. Marouf-Khelifa, K., Khelifa, A., Belhakem, A., Marouf, R., Abdelmalek, F., Addou, A. (2004). The adsorption of pentachlorophenol from aqueous solutions onto exchanged Al-MCM-41 materials. Adsorption Science & Technology, 22(1), 1–12. DOI: 10.1260/026361704323150953
  24. Dhila, H., Bhapkar, A., Bhame, S. (2025). Metal oxide/biochar hybrid nanocomposites for adsorption and photocatalytic degradation of textile dye effluents: A review. Desalination and Water Treatment, 321, 101004. DOI: 10.1016/j.dwt.2025.101004
  25. Mehdi, K., Bendenia, S., Lecomte-Nana, G.L., Batonneau, I., Fabrice, G., Marouf-Khelifa, K., Khelifa, A. (2019). A new approach about the intercalation of hexadecyltrimethylammonium into halloysite: Preparation, characterization, and mechanism. Chemical Papers, 73, 131–139. DOI: 10.1007/s11696-018-0558-8
  26. Mahrez, N., Bessaha, F., Marouf-Khelifa, K., Çoruh, A., Khelifa, A. (2020). Performance and mechanism of interaction of crystal violet with organohalloysite. Desalination and Water Treatment, 207, 410–419. DOI: 10.5004/dwt.2020.26447
  27. Bao, J., Zhang, J., Tian, Y., Xu, H., Zheng, L., Bai, L., Liu, Y. (2024). Improving humidity sensor performance through phenylphosphonic acid-intercalated layered double hydroxide. Materials Science in Semiconductor Processing, 183, 108753. DOI: 10.1016/j.mssp.2024.108753
  28. Manoratne, C.H., Rajapakse, R.M.G., Dissanayake, M.A.K.L. (2006). Ionic conductivity of poly (ethylene oxide) (PEO)-montmorillonite (MMT) nanocomposites prepared by intercalation from aqueous medium. International Journal of Electrochemical Science, 1, 32–46. DOI: 10.1016/S1452-3981(23)17133-1
  29. Bessaha, F., Bessaha, G., Benhouria, A., Benalioua, B., Bendahma, F., Boucif, F., Mahrez, N., Ziane, S., Çoruh, A., Khelifa, A. (2024). Highly efficient batch adsorption of anionic dye in wastewater using nanocomposite: Experimental and theoretical studies. Desalination and Water Treatment, 317, 100292. DOI: 10.1016/j.dwt.2024.100292
  30. Mahmoudkhani, A.H., Langer, V. (2002). Phenylphosphonic acid as a building block for two-dimensional hydrogen-bonded supramolecular arrays. Journal of Molecular Structure, 609(1–3), 97–108. DOI: 10.1016/S0022-2860(01)00954-1
  31. Theng, B.K.G. (2024). The Chemistry of Clay Organic Reactions (2nd ed.). Boca Raton: CRC Press. DOI: 10.1201/9781003080244
  32. Oloyede, O.G., Aroke, U.O., Giwa, S.O., Jock, A.A. (2021). Characterisation of natural and HDTMA-Br modified Dijah-Monkin bentonite clay: FTIR, XRF, XRD and SEM. Path of Science, 7(5), 2010–2018. DOI: 10.22178/pos.70-12
  33. Bessaha, F., Bessaha, G., Ziane, S., Khelifa, A. (2023). Adsorption of methyl orange on bentonite: Design, modeling, and analysis of experiments. Iranian Journal of Chemistry and Chemical Engineering, 42(10). DOI: 10.30492/ijcce.2023.1971110.5663
  34. Anirudhan, T.S., Ramachandran, M. (2015). Adsorptive removal of basic dyes from aqueous solutions by surfactant modified bentonite clay (organoclay): Kinetic and competitive adsorption isotherm. Process Safety and Environmental Protection, 95, 215–225. DOI: 10.1016/j.psep.2015.03.003
  35. Fernández, R., Vigil de la Villa, R., Ruiz, A.I., García, R., Cuevas, J. (2013). Precipitation of chlorite-like structures during OPC porewater diffusion through compacted bentonite at 90 °C. Applied Clay Science, 83–84, 357–367. DOI: 10.1016/j.clay.2013.07.021
  36. Cojocaru, C., Clima, L. (2020). Polymer assisted ultrafiltration of AO7 anionic dye from aqueous solutions: Experimental design, multivariate optimization, and molecular docking insights. Journal of Membrane Science, 604, 118054. DOI: 10.1016/j.memsci.2020.118054
  37. Bousemat, H., Ziane, S., Bessaha, F. (2025). Sustainable remediation of an anionic dye in aqueous solutions using modified aluminosilicate as a highly efficient and reusable adsorbent. Reaction Kinetics, Mechanisms and Catalysis, 138, 1517–1534. DOI: 10.1007/s11144-025-02794-3
  38. Bessaha, F., Mahrez, N., Bendenia, S., Kasmi, F., Marouf-Khelifa, K., Khelifa, A. (2017). Characterization and spectroscopic study of a heat-treated and acid-leached halloysite used in Congo Red adsorption. International Journal of Intelligent Engineering and Systems, 10(3), 272–279. DOI: 10.22266/ijies2017.0630.31
  39. Khalfa, A., Mellouk, S., Marouf-Khelifa, K., Khelifa, A. (2018). Removal of catechol from water by modified dolomite: Performance, spectroscopy, and mechanism. Water Science and Technology, 77, 1920–1930. DOI: 10.2166/wst.2018.071
  40. Bessaha, G., Bessaha, F., Bendenia, S., Khelifa, A. (2025). Exchanged zeolite adsorbent for removing Cr(VI): Kinetics, thermodynamics and adsorption mechanism. International Journal of Environmental Analytical Chemistry, 105(1), 1–19. DOI: 10.1080/03067319.2021.2006193
  41. Lagergren, S. (1898). Zur theorie der sogenannten adsorption geloster stoffe. Kungliga Svenska Vetenskapsakademiens Handlingar, 24(4), 1–39
  42. Ho, Y.S., McKay, G. (1999). Pseudo-second order model for sorption processes. Process Biochemistry, 34(5), 451–465. DOI: 10.1016/S0032-9592(98)00112-5
  43. Weber, W.J., Morris, J.C. (1963). Kinetics of adsorption on carbon from solution. Journal of the Sanitary Engineering Division, American Society of Civil Engineers, 89, 31–59. DOI: 10.1061/JSEDAI.0000430
  44. Aharoni, C., Tompkins, F.C. (1970). Kinetics of adsorption and desorption and the Elovich equation. In Advances in Catalysis (Vol. 21, pp. 1–49). Academic Press. DOI: 10.1016/S0360-0564(08)60563-5
  45. Amar, A., Khelifa, M., Batonneau-Gener, I., Lecomte-Nana, G.L., Marouf-Khelifa, K., Çoruh, A., Khelifa, A. (2024). Improved ciprofloxacin removal by a novel organohalloysite obtained by phenylphosphonic acid intercalation. Journal of Environmental Chemical Engineering, 12, 111791. DOI: 10.1016/j.jece.2023.111791
  46. Yılmazoglu, M., Turan, B., Demircivi, P., Hızal, J. (2022). Synthesis and characterization of imidazolium based ionic liquid modified montmorillonite for the adsorption of Orange II dye: Effect of chain length. Journal of Molecular Structure, 1249, 131628. DOI: 10.1016/j.molstruc.2021.131628
  47. Shin, W.S. (2008). Competitive sorption of anionic and cationic dyes onto cetylpyridinium-modified montmorillonite. Journal of Environmental Science and Health, Part A, 43(12), 1459–1470. DOI: 10.1080/10934520802232337
  48. Bae, J.-H., Song, D.-I., Jeon, Y.-W. (2000). Adsorption of anionic dye and surfactant from water onto organomontmorillonite. Separation Science and Technology, 35(3), 353–365. DOI: 10.1081/SS-100100161
  49. Sarkar, B., Xi, Y., Megharaj, M., Naidu, R. (2011). Orange II adsorption on palygorskites modified with alkyl trimethylammonium and dialkyl dimethylammonium bromide—An isothermal and kinetic study. Applied Clay Science, 51(3), 370–374. DOI: 10.1016/j.clay.2010.11.032
  50. Yu, J., He, W., Liu, B. (2020). Adsorption of Acid Orange II with two-step modified sepiolite: Optimization, adsorption performance, kinetics, thermodynamics and regeneration. International Journal of Environmental Research and Public Health, 17, 1732. DOI: 10.3390/ijerph17051732
  51. Langmuir, I. (1918). The adsorption of gases on plane surfaces of glass, mica and platinum. Journal of the American Chemical Society, 40, 1361–1403. DOI: 10.1021/ja02242a004
  52. Freundlich, H. (1906). Over the adsorption in solution. Zeitschrift für Physikalische Chemie, 57, 385–470. DOI: 10.1515/zpch-1907-5723
  53. Jaroniec, M., Deryło, A., Marczewski, A.W. (1983). The Langmuir–Freundlich equation in adsorption from dilute solutions on solids. Monatshefte für Chemie, 114, 393–397. DOI: 10.1007/BF00798437
  54. Jaycock, M.J., Parfitt, G.D. (1981). Chemistry of Interfaces. Ellis Horwood Ltd. DOI: 10.1002/bbpc.19810850925
  55. Mahmoodian, H., Moradi, O., Tyagi, I., Maity, A., Asif, M., Gupta, V.K. (2015). Enhanced removal of methyl orange from aqueous solutions by poly(HEMA-chitosan-MWCNT) nanocomposite. Journal of Molecular Liquids, 202, 189–198. DOI: 10.1016/j.molliq.2014.10.040
  56. Xu, Y., Yu, X., Xu, B., Peng, D., Guo, X. (2021). Sorption of pharmaceuticals and personal care products on soil and soil components: Influencing factors and mechanisms. Science of the Total Environment, 753, 141891. DOI: 10.1016/j.scitotenv.2020.141891
  57. Leone, V.O., Pereira, M.C., Aquino, S.F., Oliveira, L.C.A., Correa, S., Ramalho, T.C., Gurgel, L.V.A., Silva, A.C. (2018). Adsorption of diclofenac on a magnetic adsorbent based on maghemite: Experimental and theoretical studies. New Journal of Chemistry, 42, 437–449. DOI: 10.1039/C7NJ03214E
  58. Xing, X., Qu, H., Shao, R., Wang, Q., Xie, H. (2017). Mechanism and kinetics of dye desorption from dye loaded carbon (XC 72) with alcohol water system as desorbent. Water Science and Technology, 76(5), 1243–1250. DOI: 10.2166/wst.2017.268
  59. Chern, J.M., Wu, C.Y. (2001). Desorption of dye from activated carbon beds: Effects of temperature, pH, and alcohol. Water Research, 35, 4159–4165. DOI: 10.1016/S0043-1354(01)00127-0
  60. Bagotia, N. (2025). Regeneration strategies for exhausted adsorbents used in water treatment — a critical review. Journal of Water Process Engineering, 69, 106560. DOI: 10.1016/j.jwpe.2024.106560
  61. Bessaha, F., Bessaha, G., Benhouria, A., Benalioua, B., Mahrez, N., Boucif, F., Ziane, S., Bendahma, F., Çoruh, A., Khelifa, A. (2025). Efficient removal of a pharmaceutical compound on organoclay: Batch experiment, DFT calculation, statistical physics, and modelling. Chemical Engineering Communications, 212, 695–712. DOI: 10.1080/00986445.2024.2428964
  62. Breen, C., D’Mello, N., Yarwood, J. (2002). The thermal stability of mixed phenylphosphonic acid/water intercalates of kaolin and halloysite: A TG–EGA and VT-DRIFTS study. Journal of Materials Chemistry, 12, 273–278. DOI: 10.1039/B104254H
  63. Bao, J., Zhang, J., Tian, Y., Xu, H., Bai, L.Z.L., Liu, Y. (2024). Improving humidity sensor performance through phenylphosphonic acid-intercalated layered double hydroxide. Materials Science in Semiconductor Processing, 183, 108753. DOI: 10.1016/j.mssp.2024.108753
  64. Gentile, M.B., Gomez, S.R., Avena, M.J., Luengo, C.V. (2025). The interaction of phenylphosphonic acid with the surface of goethite: Isotherms, kinetics, electrophoretic mobility and ATR-FTIR spectroscopy. Environmental Pollution, 371, 125938. DOI: 10.1016/j.envpol.2025.125938
  65. Kgabi, D.P., Ambushe, A.A. (2023). Characterization of South African bentonite and kaolin clays. Sustainability, 15, 12679. DOI: 10.3390/su151712679
  66. Bauer, C., Jacques, P., Kalt, A. (1999). Investigation of the interaction between a sulfonated azo dye AO7 and a TiO₂ surface. Chemical Physics Letters, 307, 397–406. DOI: 10.1016/S0009-2614(99)00518-7
  67. Abbott, L.C., Batchelor, S.N., Oakes, J., Gilbert, B.C., Whitwood, A.C., Lindsay Smith, J.R., Moore, J.N. (2005). Experimental and computational studies of structure and bonding in parent and reduced forms of the azo dye Orange II. The Journal of Physical Chemistry A, 109 (14), 2894–2905. DOI: 10.1021/jp045216s
  68. Trchová, M., Šeděnková, I., Konyushenko, E.N., Stejskal, J., Holler, P., Ćirić-Marjanović, G. (2006). Evolution of polyaniline nanotubes: The oxidation of aniline in water. The Journal of Physical Chemistry B, 110(19), 9461–9468. DOI: 10.1021/jp057528g
  69. Drohat, A.C., Stivers, J.T. (2000). Escherichia coli uracil DNA glycosylase: NMR characterization of the short hydrogen bond from His187 to uracil O2. Biochemistry, 39(38), 11865–11875. DOI: 10.1021/bi000922e
  70. Khezami, L., Ben Aissa, M. A., Modwi, A., Guesmi, A., Algethami, F.K., Bououdina, M. (2024). Efficient removal of organic dyes by Cr doped ZnO nanoparticles. Biomass Conversion and Biorefinery, 14, 4177–4190. DOI: 10.1007/s13399-022-02952-w
  71. Hoehn, R.D., Carignano, M.A., Kais, S., Zhu, C., Zhong, J., Zeng, X.C., Francisco, J.S., Gladich, I. (2016). Hydrogen bonding and orientation effects on the accommodation of methylamine at the air–water interface. The Journal of Chemical Physics, 144(21), 214701. DOI: 10.1063/1.4950951
  72. Kim, D.-S. (2003). Measurement of point of zero charge of bentonite by solubilization technique and its dependence of surface potential on pH. Environmental Engineering Research, 8(4), 222–227. DOI: 10.4491/eer.2003.8.4.222
  73. Phillips, B.L., Mason, H.E., Guggenheim, S. (2007). Hydrogen bonded silanols in the 10 Å phase: Evidence from NMR spectroscopy. American Mineralogist, 92(8–9), 1474–1485. DOI: 10.2138/am.2007.2417
  74. Jayne, B.N. (2005). Hydrogen-bonded layer structures based on guanidinium sulfonates (Doctoral Dissertation, University of Bath, United Kingdom). University of Bath Repository
  75. Koo, M.-J., Lee, S.-H., Yun, H., Kim, J. W., Rotermund, F., Kwon, O.-P. (2015). New electro-optic N-methylquinolinium crystals with naphthalene-1-sulfonate. Bulletin of the Korean Chemical Society, 36(12), 2920–2923. DOI: 10.1002/bkcs.10568
  76. Jing, L., Li, P., Li, Z., Ma, D., Hu, J. (2025). Influence of π–π interactions on organic photocatalytic materials and their performance. Chemical Society Reviews, 54, 2054–2090. DOI: 10.1039/D4CS00029C
  77. Yang, Y., Adhikari, S., Xu, G. (2021). Molecular dynamics simulation in the interlayer of mixed-layer clays due to hydration and swelling mechanism. Crystals, 11(6), 586. DOI: 10.3390/cryst11060586

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