Chen F, Xie Y, Zhao J, Lu G (2001) Photocatalytic degradation of dyes on a magnetically separated
photocatalyst under visible and UV irradiation. Chemosphere 44(5):1159–1168. https://doi.org/
10.1016/S0045-6535(00)00277-0
Chen RX, Zhu SL, Mao J, Cui ZD, Yang XJ, Liang YQ, Li ZY (2015) Synthesis of CuO/Co 3 O 4
coaxial heterostructures for efficient and recycling photodegradation. Int J Photoenerg 2015:11.
https://doi.org/10.1155/2015/183468
Chou JC, Liao LP (2005) Study on pH at the point of zero charge of TiO 2 pH ion-sensitive field
effect transistor made by the sputtering method. Thin Solid Films 476(1):157–161. https://doi.
org/10.1016/j.tsf.2004.09.061
Di L, Yang H, Xian T, Chen X (2018) Construction of Z-scheme g-C 3 N 4 /CNT/Bi 2 Fe 4 O 9 composites with improved simulated-sunlight photocatalytic activity for the dye degradation.
Micromachines 9(12):613. https://doi.org/10.3390/mi9120613
Dou J, Yin S, Chong JY, Zhang B, Han J, Huang Y, Xu R (2016) Carbon spheres anchored Co 3 O 4
nanoclusters as an efficient catalyst for dye degradation. Appl Cataly A Gen 513:106–115.
https://doi.org/10.1016/j.apcata.2015.12.028
Dutta V, Sharma S, Raizada P, Hosseini-Bandegharaei A, Gupta VK, Singh P (2019a) Review on
augmentation in photocatalytic activity of CoFe 2 O 4 via heterojunction formation for
photocatalysis of organic pollutants in water. J Saudi Chem Soc 23:1119–1136. https://doi.
org/10.1016/j.jscs.2019.07.003
Dutta V, Singh P, Shandilya P, Sharma S, Raizada P, Saini AK, Gupta VK, Hosseini-BandegharaeiA, Agarwal S, Rahmani-Sani A (2019b) Review on advances in photocatalytic water disinfection utilizing graphene and graphene derivatives-based nanocomposites. J Environ Chem Eng 7
(3):103132. https://doi.org/10.1016/j.jece.2019.103132
Fahimirad B, Asghari A, Rajabi M (2017) Photo-degradation of basic green 1 and basic red 46 dyes
in their binary solution by La 2 O 3 -Al 2 O 3 nanocomposite using first-order derivative spectra and
experimental design methodology. Spectrochim Acta A 179:58–65. https://doi.org/10.1016/j.
saa.2017.02.022
Gautam S, Shandilya P, Singh VP Raizada P, Singh P (2016) Solar photocatalytic mineralization of
antibiotics using magnetically separable NiFe 2 O 4 supported onto graphene sand composite and
bentonite. J Water Process Eng 14:86–100. https://doi.org/10.1016/j.jwpe.2016.10.008
Gautam S, Shandilya P, Priya B, Singh VP, Raizada P, Rai R, Valente MA, Singh P (2017)
Superparamagnetic MnFe2O 4 dispersed over graphitic carbon sand composite and bentonite as
magnetically recoverable photocatalyst for antibiotic mineralization. Sep Purif Technol
172:498–511. https://doi.org/10.1016/j.seppur.2016.09.006
Gokul P, Vinoth R, Neppolian B, Anandhakumar S (2017) Binary metal oxide nanoparticle
incorporated composite multilayer thin films for sono-photocatalytic degradation of organic
pollutants. Appl Surf Sci 418:119–127. https://doi.org/10.1016/j.apsusc.2016.12.232
Grzechulska J, Morawski AW (2002) Photocatalytic decomposition of azo-dye acid black 1 in
water over modified titanium dioxide. Appl Catal B Environ 36(1):45–51. https://doi.org/10.
1016/S0926-3373(01)00275-2
Han C, Ge L, Chen C, Li Y, Xiao X, Zhang Y, Guo L (2014) Novel visible light induced Co 3 O 4 -gC 3 N 4 heterojunction photocatalyst for efficient degradation of methyl orange. Appl Catal B
Environ 147:546–553. https://doi.org/10.1016/j.apcatb.2013.09.038
Hao H, Lu D, Zhang J (2018) Fabrication of novel double Z-scheme photocatalyst WO 3 -Ag 3 PO 4 -
Bi 2 WO 6 with excellent visible photocatalytic activity. Int J Environ Chem 2(2):56–66. https://
doi.org/10.11648/j.ijec.20180202.15
Hasija V, Raizada P, Sudhaik A, Sharma K, Kumar A, Singh P, Jonnalagadda SB, Thakur VK
(2019a) Recent advances in noble metal free doped graphitic carbon nitride based nanohybrids
for photocatalysis of organic contaminants in water; a review. Appl Mater Today 15:494–524.
https://doi.org/10.1016/j.apmt.2019.04.003
Hasija V, Sudhaik A, Raizada P, Hosseini-Bandegharaei A, Singh P (2019b) Carbon quantum dots
supported AgI/ZnO/phosphorus doped graphitic carbon nitride as Z-scheme photocatalyst for
efficient photodegradation of 2, 4-dinitrophenol. Int J Environ Chem 7(4):103272. https://doi.
org/10.1016/j.jece.2019.103272
4 Photocatalytic Degradation of Azo Dyes in Water
141
photocatalyst under visible and UV irradiation. Chemosphere 44(5):1159–1168. https://doi.org/
10.1016/S0045-6535(00)00277-0
Chen RX, Zhu SL, Mao J, Cui ZD, Yang XJ, Liang YQ, Li ZY (2015) Synthesis of CuO/Co 3 O 4
coaxial heterostructures for efficient and recycling photodegradation. Int J Photoenerg 2015:11.
https://doi.org/10.1155/2015/183468
Chou JC, Liao LP (2005) Study on pH at the point of zero charge of TiO 2 pH ion-sensitive field
effect transistor made by the sputtering method. Thin Solid Films 476(1):157–161. https://doi.
org/10.1016/j.tsf.2004.09.061
Di L, Yang H, Xian T, Chen X (2018) Construction of Z-scheme g-C 3 N 4 /CNT/Bi 2 Fe 4 O 9 composites with improved simulated-sunlight photocatalytic activity for the dye degradation.
Micromachines 9(12):613. https://doi.org/10.3390/mi9120613
Dou J, Yin S, Chong JY, Zhang B, Han J, Huang Y, Xu R (2016) Carbon spheres anchored Co 3 O 4
nanoclusters as an efficient catalyst for dye degradation. Appl Cataly A Gen 513:106–115.
https://doi.org/10.1016/j.apcata.2015.12.028
Dutta V, Sharma S, Raizada P, Hosseini-Bandegharaei A, Gupta VK, Singh P (2019a) Review on
augmentation in photocatalytic activity of CoFe 2 O 4 via heterojunction formation for
photocatalysis of organic pollutants in water. J Saudi Chem Soc 23:1119–1136. https://doi.
org/10.1016/j.jscs.2019.07.003
Dutta V, Singh P, Shandilya P, Sharma S, Raizada P, Saini AK, Gupta VK, Hosseini-BandegharaeiA, Agarwal S, Rahmani-Sani A (2019b) Review on advances in photocatalytic water disinfection utilizing graphene and graphene derivatives-based nanocomposites. J Environ Chem Eng 7
(3):103132. https://doi.org/10.1016/j.jece.2019.103132
Fahimirad B, Asghari A, Rajabi M (2017) Photo-degradation of basic green 1 and basic red 46 dyes
in their binary solution by La 2 O 3 -Al 2 O 3 nanocomposite using first-order derivative spectra and
experimental design methodology. Spectrochim Acta A 179:58–65. https://doi.org/10.1016/j.
saa.2017.02.022
Gautam S, Shandilya P, Singh VP Raizada P, Singh P (2016) Solar photocatalytic mineralization of
antibiotics using magnetically separable NiFe 2 O 4 supported onto graphene sand composite and
bentonite. J Water Process Eng 14:86–100. https://doi.org/10.1016/j.jwpe.2016.10.008
Gautam S, Shandilya P, Priya B, Singh VP, Raizada P, Rai R, Valente MA, Singh P (2017)
Superparamagnetic MnFe2O 4 dispersed over graphitic carbon sand composite and bentonite as
magnetically recoverable photocatalyst for antibiotic mineralization. Sep Purif Technol
172:498–511. https://doi.org/10.1016/j.seppur.2016.09.006
Gokul P, Vinoth R, Neppolian B, Anandhakumar S (2017) Binary metal oxide nanoparticle
incorporated composite multilayer thin films for sono-photocatalytic degradation of organic
pollutants. Appl Surf Sci 418:119–127. https://doi.org/10.1016/j.apsusc.2016.12.232
Grzechulska J, Morawski AW (2002) Photocatalytic decomposition of azo-dye acid black 1 in
water over modified titanium dioxide. Appl Catal B Environ 36(1):45–51. https://doi.org/10.
1016/S0926-3373(01)00275-2
Han C, Ge L, Chen C, Li Y, Xiao X, Zhang Y, Guo L (2014) Novel visible light induced Co 3 O 4 -gC 3 N 4 heterojunction photocatalyst for efficient degradation of methyl orange. Appl Catal B
Environ 147:546–553. https://doi.org/10.1016/j.apcatb.2013.09.038
Hao H, Lu D, Zhang J (2018) Fabrication of novel double Z-scheme photocatalyst WO 3 -Ag 3 PO 4 -
Bi 2 WO 6 with excellent visible photocatalytic activity. Int J Environ Chem 2(2):56–66. https://
doi.org/10.11648/j.ijec.20180202.15
Hasija V, Raizada P, Sudhaik A, Sharma K, Kumar A, Singh P, Jonnalagadda SB, Thakur VK
(2019a) Recent advances in noble metal free doped graphitic carbon nitride based nanohybrids
for photocatalysis of organic contaminants in water; a review. Appl Mater Today 15:494–524.
https://doi.org/10.1016/j.apmt.2019.04.003
Hasija V, Sudhaik A, Raizada P, Hosseini-Bandegharaei A, Singh P (2019b) Carbon quantum dots
supported AgI/ZnO/phosphorus doped graphitic carbon nitride as Z-scheme photocatalyst for
efficient photodegradation of 2, 4-dinitrophenol. Int J Environ Chem 7(4):103272. https://doi.
org/10.1016/j.jece.2019.103272
4 Photocatalytic Degradation of Azo Dyes in Water
141