Developing boron carbon nitride/boron carbon nitride-citric acid quantum dot metal-free photocatalyst and evaluating the degradation performance difference of photo-induced species for tetracycline via theoretical and experimental study

Xu, Zixuan; Guo, Yong; Chen, Lu; Yan, Congcong; Guo, Ying; Xu, Guowei

doi:10.1016/j.chemosphere.2023.138113

Cited by 8 publications

(2 citation statements)

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“…This technique aids in assessing the efficiency of photocharge separation in catalysts; lower PL intensity corresponds to higher efficiency in separating photocarriers. 58 The results show that pure ZnO exhibits a relatively high PL intensity, signifying rapid recombination of photoelectrons and holes and poor photocarrier separation, not conducive to photocatalytic reactions. 59 ZPx has primary emissions at 550 nm, and the emission intensity of ZP20 is much weaker than ZnO.…”

Section: Resultsmentioning

confidence: 97%

“…To understand the charge transfer and recombination of the photocatalytic materials, steady-state photoluminescence (PL) spectra at room temperature were recorded (Figure S7) for all samples under identical excitation conditions (330 nm). This technique aids in assessing the efficiency of photocharge separation in catalysts; lower PL intensity corresponds to higher efficiency in separating photocarriers . The results show that pure ZnO exhibits a relatively high PL intensity, signifying rapid recombination of photoelectrons and holes and poor photocarrier separation, not conducive to photocatalytic reactions .…”

Section: Resultsmentioning

confidence: 98%

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Enhanced Charge Separation in a PAN/ZnO Nanocomposite for Promoted Photocatalytic Hydrogen Evolution

Suo,

Xie,

Liao

et al. 2024

ACS Appl. Energy Mater.

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A PAN/ZnO (PAN, polyacrylonitrile) nanocomposite material was made using an ultrasound-assisted agitation method with PAN of different concentrations. XRD, SEM, TEM, BET, XPS, UV−vis, PL, FTIR, TPR, EIS, MS, and EPR techniques were used to analyze the effects of different PAN concentrations on the crystallinity, morphology, specific surface area, photocatalytic activity, photoresponse, and so on. The introduction of PAN in ZnO increases the photocatalytic hydrogen production activity. The composite material showed enhanced photocatalytic activity compared with the original PAN and ZnO catalysts. The optimal hydrogen production rate was 7.53 mmol•g −1 •h −1 for ZP20, surpassing that of ZnO (0.77 mmol•g −1 •h −1 ) and PAN (0.24 mmol•g −1 •h −1 ). This improvement is attributed to the effective charge transfer by PAN loading on ZnO, enhancing the separation efficiency of the photogenerated carriers through the binding of nanoparticles. This work supports a method for the design and synthesis of ZnO-based organic−inorganic hybrid photocatalysts.

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Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 98%