Zinc phthalocyanine sensitized g-C3N4 photocatalyst for exceptional photocatalytic hydrogen evolution and pollutant degradation

Bakhtiar, Syed ul Hasnain; Zada, Amir; Raziq, Fazal; Ali, Sharafat; Shah, Muhammad; Ateeq, Muhammad; Khan, Muhammad Saleem; Dang, Alei; Fazil, Perveen; Naeem, Mohammad; Khan, Wilayat; Khan, Javed Ali; Nazir, Ruqia; Dong, Wen; Fu, Qiuyun

doi:10.1016/j.ijhydene.2023.01.152

Cited by 23 publications

(3 citation statements)

References 76 publications

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“…Therefore, the radical trapping experiment was carried out to identify the main active species involved in the degradation process. For this purpose, photocatalytic experiments were performed by the addition of a 1.5 mmol solution of isopropyl alcohol (iPrOH), benzoquinone (BQ), and ethylenediaminetetraacetic acid disodium salt (EDTA) as scavengers for trapping of h + , ⋅O 2 − , and ⋅OH, respectively [79–81] . As presented in Figure 13 c and d, the scavenging test shows that h + , ⋅O 2 − , and ⋅OH all play important roles in photocatalytic reactions, but the superoxide anions have a major role in the photocatalytic degradation of dyes.…”

Section: Resultsmentioning

confidence: 99%

Synergistic Effect of Selenium Dioxide for Better Photocatalytic Performance of Conventional Semiconductors Distributed into Mesoporous SBA‐15

Ranjbar‐Niavol,

Zanjanchi,

Farjood

2023

ChemistrySelect

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The mesoporous SBA‐15 was synthesized in acidic conditions by hydrothermal method using Pluronic surfactant P123. A combination of SeO2, TiO2, and CuO was loaded in SBA‐15 in pairs or singly. Synthesized SBA‐15 and some loaded mesoporous materials were characterized using several standard techniques. The efficiency of the synthesized photocatalysts was verified for the decomposition of two different dyes (methylene blue (MB) and methyl green (MG)) under ultraviolet and visible light radiation. The results show that the synthesized photocatalyst based on SBA‐15 with 5 % by weight of TiO2 and 5 % by weight of SeO2 has better performance (about 98 % of MB or MG were degraded within 120 min under UV radiation). Also, the photocatalyst with 5 % by weight of SeO2 and 5 % by weight of CuO shows a good performance for the degradation of the dyes under visible irradiation in the presence of H2O2 (complete elimination of MB and MG within 150 and 75 min, respectively). The scavenging test shows that superoxide has a governing role for the degradation of the dyes. The photocatalysts are reusable and they could preserve more than 74 % of the efficiency following 4 times of consecutive use for the degradation of the dyes.

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Section: Resultsmentioning

confidence: 99%

Synergistic Effect of Selenium Dioxide for Better Photocatalytic Performance of Conventional Semiconductors Distributed into Mesoporous SBA‐15

Ranjbar‐Niavol,

Zanjanchi,

Farjood

2023

ChemistrySelect

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“…The authors identified carboxylic acids and CO 2 as the degradation products of 2,4-DCP. Zada, Dong, Fu, and co-workers 61 prepare a Zn 4 /g-C 3 N 4 nanocomposite for the photodegradation of 2,4-DCP. The authors could achieve a degradation of 85% after 60 min of visible light irradiation ( λ > 420 nm).…”

Section: Photocatalytic Degradation Of Organic Pollutantsmentioning

confidence: 99%

Advances in photocatalytic degradation of organic pollutants in wastewaters: harnessing the power of phthalocyanines and phthalocyanine-containing materials

Gamelas,

Tomé,

Tomé

et al. 2023

RSC Adv.

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“…Graphitic phase carbon nitride (g-C 3 N 4 ) exhibits great potential for photocatalytic applications due to its favorable band gap ( E g = 2.7 eV), excellent visible light responsiveness, and high thermal and chemical stability. , However, the photocatalytic performance of g-C 3 N 4 is still constrained by several drawbacks, including low specific surface area, rapid recombination of photogenerated charges, limited utilization of visible light, significant exciton effects, slow carrier migration, and weak electrical conductivity. , These limitations impede the further development and practical application of g-C 3 N 4 , thus necessitating the design of photocatalytic systems that demonstrate elevated catalytic activity for BPA degradation.…”

Section: Introductionmentioning

confidence: 99%

Oxygen-Doped Porous g-C₃N₄ via Oxalic Acid-Assisted Thermal Polycondensation as a Visible Light-Driven Photocatalyst for Bisphenol A Degradation

Wei,

Liu,

Liu

et al. 2023

ACS Appl. Nano Mater.

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Graphitic phase carbon nitride (g-C3N4) demonstrates tremendous potential for photocatalytic degradation of organic pollutants, but its performance is severely limited by the high recombination of photogenerated electron–hole pairs. This study introduces an innovative approach oxalic acid-assisted thermal polycondensation to construct a series of oxygen-doped porous g-C3N4 (OCN) nanostructured materials, which simultaneously utilizes the heat-induced foaming mechanism of oxalic acid to achieve element doping modification. The results indicate that modified OCN-1.5 exhibited the optimal photocatalytic activity. Under visible light conditions, the degradation efficiency of OCN-1.5 catalyst toward bisphenol A (BPA, 30 mg L–1) reached 82.55% (240 min light irradiation). This represents a significant improvement of 60% compared to the traditional g-C3N4 catalyst. The mechanism is as follows: on the one hand, the doping of oxygen atoms alter the charge distribution and symmetry of g-C3N4, thereby enhancing the separation efficiency of photogenerated charge carriers. Furthermore, under visible light irradiation, it facilitates the formation of conjugated delocalized systems associated with e– and h+ on the surface, leading to an accelerated mineralization degradation of OCN and BPA at the interface. Additionally, the •O2 – radicals generated from the interfacial reactions can also directly oxidize BPA simultaneously. On the other hand, the construction of a porous nanostructure provides a larger specific surface area and channels for the diffusion of charge carriers, thereby enhancing light capture and transfer. Moreover, this structure offers more active sites for the adsorption and degradation of pollutants. Therefore, the synthetic strategy proposed in this study overcomes the long-standing aggregation issue in the synthesis of g-C3N4, providing a perspective for the scalable preparation of high-performance g-C3N4 photocatalysts and the removal of organic pollutants.

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Zinc phthalocyanine sensitized g-C3N4 photocatalyst for exceptional photocatalytic hydrogen evolution and pollutant degradation

Cited by 23 publications

References 76 publications

Synergistic Effect of Selenium Dioxide for Better Photocatalytic Performance of Conventional Semiconductors Distributed into Mesoporous SBA‐15

Synergistic Effect of Selenium Dioxide for Better Photocatalytic Performance of Conventional Semiconductors Distributed into Mesoporous SBA‐15

Advances in photocatalytic degradation of organic pollutants in wastewaters: harnessing the power of phthalocyanines and phthalocyanine-containing materials

Oxygen-Doped Porous g-C₃N₄ via Oxalic Acid-Assisted Thermal Polycondensation as a Visible Light-Driven Photocatalyst for Bisphenol A Degradation

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Zinc phthalocyanine sensitized g-C3N4 photocatalyst for exceptional photocatalytic hydrogen evolution and pollutant degradation

Cited by 23 publications

References 76 publications

Synergistic Effect of Selenium Dioxide for Better Photocatalytic Performance of Conventional Semiconductors Distributed into Mesoporous SBA‐15

Synergistic Effect of Selenium Dioxide for Better Photocatalytic Performance of Conventional Semiconductors Distributed into Mesoporous SBA‐15

Advances in photocatalytic degradation of organic pollutants in wastewaters: harnessing the power of phthalocyanines and phthalocyanine-containing materials

Oxygen-Doped Porous g-C3N4 via Oxalic Acid-Assisted Thermal Polycondensation as a Visible Light-Driven Photocatalyst for Bisphenol A Degradation

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Oxygen-Doped Porous g-C₃N₄ via Oxalic Acid-Assisted Thermal Polycondensation as a Visible Light-Driven Photocatalyst for Bisphenol A Degradation