1. V. Hasija, P. Raizada, A. Sudhaik, K. Sharma, A. Kumar, P. Singh, S.B. Jonnalagadda, V.K. Thakur, Recent advances in noble metal free doped graphitic carbon nitride based nanohybrids for photocatalysis of organic contaminants in water: a review, Appl. Mater. Today, 15 (2019) 494–524.
  2. V. Hasija, A. Sudhaik, P. Raizada, A. Hosseini-Bandegharaei, P. Singh, Carbon quantum dots supported AgI/ZnO/phosphorus doped graphitic carbon nitride as Z-scheme photocatalyst for efficient photodegradation of 2,4-dinitrophenol, J. Environ. Chem. Eng., 7 (2019) 103272.
  3. M. Pirhashemi, A. Habibi-Yangjeh, S.R. Pouran, Review on the criteria anticipated for the fabrication of highly efficient ZnObased visible-light-driven photocatalysts, J. Ind. Eng. Chem., 62 (2018) 1–25.
  4. P. Raizada, A. Sudhaik, P. Singh, A. Hosseini-Bandegharaei, P. Thakur, Converting type II AgBr/VO into ternary Z scheme photocatalyst via coupling with phosphorus doped g-C3N4 for enhanced photocatalytic activity, Sep. Purif. Technol., 12 (2019) 115692.
  5. P. Raizada, A. Sudhaik, P. Singh, P. Shandilya, V.K. Gupta, A. Hosseini-Bandegharaei, S. Agrawal, Ag3PO4 modified phosphorus and sulphur co-doped graphitic carbon nitride as a direct Z-scheme photocatalyst for 2,4-dimethyl phenol degradation, J. Photochem. Photobiol., A, 374 (2019) 22–35.
  6. D. Xiao, K. Dai, Y. Qu, Y. Yin, H. Chen, Hydrothermal synthesis of α-Fe2O3/g-C3N4 composite and its efficient photocatalytic reduction of Cr(VI) under visible light, Appl. Surf. Sci., 358 (2015) 181–187.
  7. A. Habibi-Yangjeh, M. Mousavi, K. Nakata, Boosting visiblelight photocatalytic performance of g-C3N4/Fe3O4 anchored with CoMoO4 nanoparticles: novel magnetically recoverable photocatalysts, J. Photochem. Photobiol., A, 368 (2019) 120–136.
  8. A. Sudhaik, P. Raizada, P. Shandilya, P. Singh, Magnetically recoverable graphitic carbon nitride and NiFe2O4 based magnetic photocatalyst for degradation of oxytetracycline antibiotic in simulated wastewater under solar light, J. Environ. Chem. Eng., 6 (2018) 3874–3883.
  9. K. Sharma, V. Dutta, S. Sharma, P. Raizada, A. Hosseini-Bandegharaei, P. Thakur, P. Singh, Recent advances in enhanced photocatalytic activity of bismuth oxyhalides for efficient photocatalysis of organic pollutants in water: a review, J. Ind. Eng. Chem., 78 (2019) 1–20.
  10. P. Shandilya, D. Mittal, A. Sudhaik, M. Soni, P. Raizada, A.K. Saini, P. Singh, GdVO4 modified fluorine doped graphene nanosheets as dispersed photocatalyst for mitigation of phenolic compounds in aqueous environment and bacterial disinfection, Sep. Purif. Technol., 210 (2019) 804–816.
  11. A. Sudhaik, P. Raizada, P. Shandilya, D.Y. Jeong, J.H. Lim, P. Singh, Review on fabrication of graphitic carbon nitride based efficient nanocomposites for photodegradation of aqueous phase organic pollutants, J. Ind. Eng. Chem., 67 (2018) 28–51.
  12. A. Habibi-Yangjeh, M. Mousavi, Deposition of CuWO4 nanoparticles over g-C3N4/Fe3O4 nanocomposite: novel magnetic photocatalysts with drastically enhanced performance under visible-light, Adv. Powder Technol., 29 (2018) 1379–1392.
  13. P. Singh, P. Shandilya, P. Raizada, A. Sudhaik, A. Rahmani-Sani, A. Hosseini-Bandegharae, Review on various strategies for enhancing photocatalytic activity of graphene based nanocomposites for water purification, Arabian J. Chem., 13 (2018) 3498–3520.
  14. S. Asadzadeh-Khaneghah, A. Habibi-Yangjeh, D. Seifzadeh, Graphitic carbon nitride nanosheets coupled with carbon dots and BiOI nanoparticles: boosting visible-light-driven photocatalytic activity, J. Taiwan Inst. Chem. Eng., 87 (2018) 98–111.
  15. P. Singh, Sonu, P. Raizada, A. Sudhaik, P. Shandilya, P. Thakur, S. Agarwal, V.K. Gupta, Enhanced photocatalytic activity and stability of AgBr/BiOBr/graphene heterojunction for phenol degradation under visible light, J. Saudi Chem. Soc., 23 (2018) 586–599.
  16. P. Singh, K. Sharma, V. Hasija, V. Sharma, S. Sharma, P. Raizada, M. Singh, A.K. Saini, A. Hosseini-Bandegharaei, V.K. Thakur, Systematic review on applicability of magnetic iron oxides– integrated photocatalysts for degradation of organic pollutants in water, Mater. Today Chem., 14 (2019) 100186.
  17. N. Chandel, K. Sharma, A. Sudhaik, P. Raizada, A. Hosseini- Bandegharaei, V.K. Thakur, P. Singh, Magnetically separable ZnO/ZnFe2O4 and ZnO/CoFe2O4 photocatalysts supported onto nitrogen doped graphene for photocatalytic degradation of toxic. dyes, Arabian J. Chem., 13 (2019) 4324–4340.
  18. D. Kong, Y. Zheng, M. Kobielusz, Y. Wang, Z. Bai, W. Macyk, X. Wang, J. Tang, Recent advances in visible light-driven water oxidation and reduction in suspension systems, Mater. Today, 21 (2018) 897–924.
  19. L. Chen, Y. Man, Z. Chen, Y. Zhang, Ag/g-C3N4 layered composites with enhanced visible light photocatalytic performance, Mater. Res. Express, 3 (2016) 115003.
  20. S. Sharma, V. Dutta, P. Singh, P. Raizada, A. Rahmani-Sani, A. Hosseini-Bandegharaei, V.K. Thakur, Carbon quantum dot supported semiconductor photocatalysts for efficient degradation of organic pollutants in water: a review, J. Cleaner Prod., 228 (2019) 755–769.
  21. M. Hadnadjev-Kostic, T. Vulic, R. Marinkovic-Neducin, D. Lončarević, J. Dostanić, S. Markov, D. Jovanović, Photo-induced properties of photocatalysts: a study on the modified structural, optical and textural properties of TiO2–ZnAl layered double hydroxide based materials, J. Cleaner Prod., 164 (2017) 1–8.
  22. R. Miao, Z. Luo, W. Zhong, S.Y. Chen, T. Jiang, B. Dutta, Y. Nasr, Y. Zhang, S.L. Suib, Mesoporous TiO2 modified with carbon quantum dots as a high-performance visible light photocatalyst, Appl. Catal., B, 189 (2016) 26–38.
  23. D. Cao, L. Pan, J. Li, X. Cheng, Z. Zhao, J. Xu, Q. Li, X. Wang, S. Li, J. Wang, Q. Liu, Investigation on the structures and magnetic properties of carbon or nitrogen doped cobalt ferrite nanoparticles, Sci. Rep., 8 (2018) 7916.
  24. C. Borgohain, K.K. Senapati, K.C. Sarma, P. Phukan, A facile synthesis of nanocrystalline CoFe2O4 embedded onedimensional ZnO hetero-structure and its use in photocatalysis, J. Mol. Catal. A, 363–364 (2012) 495–500.
  25. B. Joshi, E. Samuel, T.G. Kim, C.W. Park, Y.I. Kim, M.T. Swihart, W.Y. Yoon, S.S. Yoon, Supersonically spray-coated zinc ferrite/graphitic-carbon nitride composite as a stable high-capacity anode material for lithium-ion batteries, J. Alloys Compd., 768 (2018) 525–534.
  26. A. Kalam, A.G. Al-Sehemi, M. Assiri, G. Du, T. Ahmad, I. Ahmad, M. Pannipara, Modified solvothermal synthesis of cobalt ferrite (CoFe2O4) magnetic nanoparticles photocatalysts for degradation of methylene blue with H2O2/visible light, Results Phys., 8 (2018) 1046–1053.
  27. A. Arimi, L. Megatif, L.I. Granone, R. Dillert, D.W. Bahnemann, Visible-light photocatalytic activity of zinc ferrites, J. Photochem. Photobiol., A, 366 (2018) 118–126.
  28. K. Maaz, A. Mumtaz, S.K. Hasanain, A. Ceylan, Synthesis and magnetic properties of cobalt ferrite (CoFe2O4) nanoparticles prepared by wet chemical route, J. Magn. Magn. Mater., 308 (2007) 289–95.
  29. K.K. Kefeni, B.B. Mamba, T.A. Msagati, Application of spinel ferrite nanoparticles in water and wastewater treatment: a review, Sep. Purif. Technol., 188 (2017) 399–422.
  30. H.J. Cui, J.W. Shi, B. Yuan, M.L. Fu, Synthesis of porous magnetic ferrite nanowires containing Mn and their application in water treatment, J. Mater. Chem. A, 1 (2013) 5902–5907.
  31. P. Raizada, P. Thakur, A. Sudhaik, P. Singh, V.K. Thakur, A. Hosseini-Bandegharaei, Fabrication of dual Z-scheme photocatalyst via coupling of BiOBr/Ag/AgCl heterojunction with P and S co-doped g-C3N4 for efficient phenol degradation, Arabian J. Chem., 13 (2020) 4538–4552.
  32. A. Hassani, P. Eghbali, A. Ekicibil, O. Metin, Monodisperse cobalt ferrite nanoparticles assembled on mesoporous graphitic carbon nitride (CoFe2O4/mpg-C3N4): a magnetically recoverable nanocomposite for the photocatalytic degradation of organic dyes, J. Magn. Magn. Mater., 456 (2018) 400–412.
  33. L. Lu, Z. Lv, Y. Si, M. Liu, S. Zhang, Recent progress on band and surface engineering of graphitic carbon nitride for artificial photosynthesis, Appl. Surf. Sci., 462 (2018) 693–712.
  34. S. Gautam, P. Shandilya, B. Priya, V.P. Singh, P. Raizada, R. Rai, M.A. Valente, P. Singh, Superparamagnetic MnFe2O4 dispersed over graphitic carbon sand composite and bentonite as magnetically recoverable photocatalyst for antibiotic mineralization, Sep. Purif. Technol., 172 (2017) 498–511.
  35. S.C. Yan, Z.S. Li, Z.G. Zou, Photodegradation performance of g-C3N4 fabricated by directly heating melamine, Langmuir, 25 (2009) 10397–10401.
  36. S.C. Yan, Z.S. Li, Z.G. Zou, Photodegradation of rhodamine B and methyl orange over boron-doped g-C3N4 under visible light irradiation, Langmuir, 26 (2010) 3894–3901.
  37. F. Dong, Z. Zhao, T. Xiong, Z. Ni, W. Zhang, Y. Sun, W.K. Ho, In situ construction of g-C3N4/g-C3N4 metal-free heterojunction for enhanced visible-light photocatalysis, ACS Appl. Mater. Interfaces, 5 (2013) 11392–11401.
  38. S. Asadzadeh-Khaneghah, A. Habibi-Yangjeh, K. Nakata, Decoration of carbon dots over hydrogen peroxide treated graphitic carbon nitride: exceptional photocatalytic performance in removal of different contaminants under visible light, J. Photochem. Photobiol., A, 374 (2019) 161–172.
  39. M.J. Bojdys, J.O. Müller, M. Antonietti, A. Thomas, Ionothermal synthesis of crystalline, condensed, graphitic carbon nitride, Chem. Eur. J., 14 (2008) 8177–8182.
  40. A. Kumar, P. Raizada, P. Singh, R. Saini, A. Saini, A. Hosseini- Bandegharaei, Perspective and status of polymeric graphitic carbon nitride based Z-scheme photocatalytic systems for sustainable photocatalytic water purification, Chem. Eng. J., (2019) 123496.
  41. J. Wen, J. Xie, X. Chen, X. Li, A review on g-C3N4-based photocatalysts, Appl. Surf. Sci., 391 (2017) 72–123.
  42. X. Bai, L. Wang, R. Zong, Y. Zhu, Photocatalytic activity enhanced via g-C3N4 nanoplates to nanorods, J. Phys. Chem. C, 117 (2013) 9952–9961.
  43. L. Chen, W. Ma, J. Dai, J. Zhao, C. Li, Y. Yan, Facile synthesis of highly efficient graphitic-C3N4/ZnFe2O4 heterostructures enhanced visible-light photocatalysis for spiramycin degradation, J. Photochem. Photobiol., A, 328 (2016) 24–32.
  44. L. Gan, S. Shang, C.W. Yuen, S.X. Jiang, E. Hu, Hydrothermal synthesis of magnetic CoFe2O4/graphene nanocomposites with improved photocatalytic activity, Appl. Surf. Sci., 351 (2015) 140–147.
  45. R. Singh, J. Ladol, H. Khajuria, H.N. Sheikh, Nitrogen doped graphene nickel ferrite magnetic photocatalyst for the visible light degradation of methylene blue, Acta Chim. Sin., 64 (2017) 170–178.
  46. T. Zhu, Y. Song, H. Ji, Y. Xu, Y. Song, J. Xia, S. Yin, Y. Li, H. Xu, Q. Zhang, H. Li, Synthesis of g-C3N4/Ag3VO4 composites with enhanced photocatalytic activity under visible light irradiation, Chem. Eng. J., 271 (2015) 96–105.
  47. H. Xu, L. Ma, Z. Jin, Nitrogen-doped graphene: synthesis, characterizations and energy applications, J. Energy Chem., 27 (2018) 146–160.
  48. K. Sridharan, T. Kuriakose, R. Philip, T.J. Park, Transition metal (Fe, Co and Ni) oxide nanoparticles grafted graphitic carbon nitrides as efficient optical limiters and recyclable photocatalysts, Appl. Surf. Sci., 308 (2014) 139–147.
  49. K.K. Das, S. Patnaik, S. Mansingh, A. Behera, A. Mohanty, C. Acharya, K.M. Parida, Enhanced photocatalytic activities of polypyrrole sensitized zinc ferrite/graphitic carbon nitride n-n heterojunction towards ciprofloxacin degradation, hydrogen evolution and antibacterial studies, J. Colloid Interface Sci., 561 (2020) 551–567.
  50. Y. Cui, Y. Tang, X. Wang, Template-free synthesis of graphitic carbon nitride hollow spheres for photocatalytic degradation of organic pollutants, Mater. Lett., 161 (2015) 197–200.
  51. R. Li, M. Cai, Z. Xie, Q. Zhang, Y. Zeng, H. Liu, W. Lv, Construction of heterostructured CuFe2O4/g-C3N4 nanocomposite as an efficient visible light photocatalyst with peroxydisulfate for the organic oxidation, Appl. Catal., B, 244 (2019) 974–982.
  52. S. Singh, S. Singhal, Transition metal doped cobalt ferrite nanoparticles: efficient photocatalyst for photodegradation of textile dye, Mater. Today, 14 (2019) 453–460.
  53. W. Wang, N. Li, K. Hong, H. Guo, R. Ding, Z. Xia, Z-scheme recyclable photocatalysts based on flower-like nickel zinc ferrite nanoparticles/ZnO nanorods: enhanced activity under UV and visible irradiation, J. Alloys Compd., 777 (2019) 1108–1114.
  54. D.R. Paul, R. Sharma, P. Panchal, S.P. Nehra, A.P. Gupta, A. Sharma, Synthesis, characterization and application of silver doped graphitic carbon nitride as photocatalyst towards visible light photocatalytic hydrogen evolution, Int. J. Hydrogen Energy, (2019), doi: 10.1016/j.ijhydene.2019.06.061.
  55. K. Singh, The use of nitrogen adsorption for the characterisation of porous materials, Colloids Surf., A., 187 (2001) 3–9.
  56. W. Chen, Z.C. He, G.B. Huang, C.L. Wu, W.F. Chen, X.H. Liu, Direct Z-scheme 2D/2D MnIn2S4/g-C3N4 architectures with highly efficient photocatalytic activities towards treatment of pharmaceutical wastewater and hydrogen evolution, Chem. Eng. J., 359 (2019) 244–253.
  57. S. Huang, Y. Xu, M. Xie, H. Xu, M. He, J. Xia, L. Huang, H. Li, Synthesis of magnetic CoFe2O4/g-C3N4 composite and its enhancement of photocatalytic ability under visible-light, Colloids Surf., A, 478 (2015) 71–80.
  58. P. Singh, S. Gautam, P. Shandilya, B. Priya, V.P. Singh, P. Raizada, Graphene bentonite supported ZnFe2O4 as superparamagnetic photocatalyst for antibiotic degradation, Adv. Mater. Lett., 8 (2017) 229–238.
  59. P. Shandilya, D. Mittal, M. Soni, P. Raizada, A. Hosseini- Bandegharaei, A.K. Saini, P. Singh, Fabrication of fluorine doped graphene and SmVO4 based dispersed and adsorptive photocatalyst for abatement of phenolic compounds from water and bacterial disinfection, J. Cleaner Prod., 203 (2018) 386–399.
  60. P. Shandilya, D. Mittal, M. Soni, P. Raizada, A. Hosseini-Bandegharaei, A.K. Saini, P. Singh, Fabrication of fluorine doped graphene and SmVO4 based dispersed and adsorptive photocatalyst for abatement of phenolic compounds from water and bacterial disinfection, J. Cleaner Prod., 203 (2018) 386–399.
  61. V. Dutta, P. Singh, P. Shandilya, S. Sharma, P. Raizada, A.K. Saini, V.K. Gupta, A. Hosseini-Bandegharaei, S. Agarwal, A. Rahmani-Sani, Review on advances in photocatalytic water disinfection utilizing graphene and graphene derivatives-based nanocomposites, J. Environ. Chem. Eng., 7 (2019) 103–132.
  62. F.A. Harraz, R.M. Mohamed, M.M. Rashad, Y.C. Wang, W. Sigmund, Magnetic nanocomposite based on titania–silica/cobalt ferrite for photocatalytic degradation of methylene blue dye, Ceram. Int., 40 (2014) 375–384.
  63. S. Xu, D. Feng, W. Shangguan, Preparations and photocatalytic properties of visible-light-active zinc ferrite-doped TiO2 photocatalyst, J. Phys. Chem. C., 113 (2019) 2463–2467.
  64. P.P. Hankare, R.P. Patil, A.V. Jadhav, K.M. Garadkar, R. Sasikala, Enhanced photocatalytic degradation of methyl red and thymol blue using titania-alumina-zinc ferrite nanocomposite, Appl. Catal., B, 107 (2011) 333–339.
  65. V. Dutta, S. Sharma, P. Raizada, A. Hosseini-Bandegharaei, V.K. Gupta, P. Singh, Review on augmentation in photocatalytic activity of CoFe2O4 via heterojunction formation for photocatalysis of organic pollutants in water, J. Saudi Chem. Soc., 23 (2019) 1119–1136.
  66. D.R. Paul, R. Sharma, S.P. Nehra, A. Sharma, Effect of calcination temperature, pH and catalyst loading on photodegradation efficiency of urea derived graphitic carbon nitride towards methylene blue dye solution, RSC Adv., 9 (2019) 15381–15391.
  67. D.R. Paul, R. Sharma, P. Panchal, R. Malik, A. Sharma, V.K. Tomer, S.P. Nehra, Silver doped graphitic carbon nitride for the enhanced photocatalytic activity towards organic dyes, J. Nanosci. Nanotechnol., 19 (2019) 5241–5248.
  68. P. Panchal, D.R. Paul, A. Sharma, D. Hooda, R. Yadav, P. Meena, S.P. Nehra, Phytoextract mediated ZnO/MgO nanocomposites for photocatalytic and antibacterial activities, J. Photochem. Photobiol., A, 385 (2019) 112049.
  69. D. Patidar, A. Yadav, D.R. Paul, A. Sharma, S.P. Nehra, Nanohybrids cadmium selenide-reduced graphene oxide for improving photo-degradation of methylene blue, Physica E, 114 (2019) 113560.