Fast and non-selective photodegradation of basic yellow 28, malachite green, tetracycline, and sulfamethazine using a nanosized ZnO synthesized from zinc ore

Belghiti, Mohamed Alaoui El; Tanji, Karim; Mersly, Lekbira El; Lamsayety, Isam; Ouzaouit, Khalid; Faqir, H.; Benzakour, Intissar; Rafqah, Salah; Outzourhit, A.

doi:10.1007/s11144-022-02232-8

Cited by 31 publications

(5 citation statements)

References 41 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This probably happens due to the catalytic activity of the ZnO on the degradation process. Similar behavior was reported in papers for coal combustion pro-cesses with Fe 2 O 3 , CeO 2 , and CaO [38][39][40] and for enhanced photodegradation processes using ZnO nanoparticles [41][42][43].…”

Section: Thermogravimetric Tg% Analysis Of Pure Ac and Zno@ac Compositessupporting

confidence: 86%

Hydrogen Sulfide Removal via Sorption Process on Activated Carbon–Metal Oxide Composites Derived from Different Biomass Sources

Baikousi,

Gantzoudi,

Gioti

et al. 2023

Molecules

View full text Add to dashboard Cite

Biomass exploitation is a global trend due to the circular economy and the environmentally friendly spirit. Numerous applications are now based on the use of biomass-derived products. Hydrogen sulfide (H2S) is a highly toxic and environmentally hazardous gas which is emitted from various processes. Thus, the efficient removal of this toxic hazardous gas following cost-effective processes is an essential requirement. In this study, we present the synthesis and characterization of biomass-derived activated carbon/zinc oxide (ZnO@AC) composites from different biomass sources as potential candidates for H2S sorption. The synthesis involved a facile method for activated carbon production via pyrolysis and chemical activation of biomass precursors (spent coffee, Aloe-Vera waste leaves, and corncob). Activated carbon production was followed by the incorporation of zinc oxide nanoparticles into the porous carbon matrix using a simple melt impregnation method. The synthesized ZnO@AC composites were characterized using X-ray diffraction (XRD), infrared spectroscopy (IR), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and nitrogen porosimetry. The H2S removal performance of the ZnO@AC composites was evaluated through sorption experiments using a handmade apparatus. Our findings demonstrate that the Aloe-Vera-, spent coffee-, and corncob-derived composites exhibit superior H2S sorption capacity up to 106 mgH2S/gads., 66 mgH2S/gads., and 47 mgH2S/gads., respectively.

show abstract

Section: Thermogravimetric Tg% Analysis Of Pure Ac and Zno@ac Compositessupporting

confidence: 86%

Hydrogen Sulfide Removal via Sorption Process on Activated Carbon–Metal Oxide Composites Derived from Different Biomass Sources

Baikousi,

Gantzoudi,

Gioti

et al. 2023

Molecules

View full text Add to dashboard Cite

show abstract

“…The UV absorption spectra of CdS, CdS-C 60 , CdS-TiO 2 , and CdS-C 60 /TiO 2 are displayed in Figure 3 a–d. These spectra demonstrate that the absorbance values decrease with an increasing visible light irradiation period, indicating a significant and quick degradation of MG. To examine the kinetics of MG’s photocatalytic breakdown in more detail, we measured the photocatalytic degradation curves of five catalyst samples, as shown in Figure 3 e–f [ 37 ]. According to the relevant formula, we calculated the apparent rate constant k app for the catalytic reactions with different catalysts in Table S1 (Supporting information) , and it was indicated that the photocatalytic efficiency of all the samples was significantly higher than that of P25 when exposed to visible light.…”

Section: Resultsmentioning

confidence: 99%

“…Materials 2024, 17, x FOR PEER REVIEW 6 of 11 degradation curves of five catalyst samples, as shown in Figure 3e-f [37]. According to the relevant formula, we calculated the apparent rate constant kapp for the catalytic reactions with different catalysts in Table S1 (Supporting information), and it was indicated that the photocatalytic efficiency of all the samples was significantly higher than that of P25 when exposed to visible light.…”

Section: Resultsmentioning

confidence: 99%

C60- and CdS-Co-Modified Nano-Titanium Dioxide for Highly Efficient Photocatalysis and Hydrogen Production

Zhang,

Liang,

Gao

et al. 2024

Materials

View full text Add to dashboard Cite

The inherent properties of TiO2, including a wide band gap and restricted spectral response range, hinder its commercial application and its ability to harness only 2–3% of solar energy. To address these challenges and unlock TiO2’s full potential in photocatalysis, C60- and CdS-co-modified nano-titanium dioxide has been adopted in this work to reduce the band gap, extend the absorption wavelength, and control photogenerated carrier recombination, thereby enhancing TiO2’s light-energy-harnessing capabilities and hydrogen evolution capacity. Using the sol-gel method, we successfully synthesized CdS-C60/TiO2 composite nanomaterials, harnessing the unique strengths of CdS and C60. The results showed a remarkable average yield of 34.025 μmol/h for TiO2 co-modified with CdS and C60, representing a substantial 17-fold increase compared to pure CdS. Simultaneously, the average hydrogen generation of C60-modified CdS surged to 5.648 μmol/h, a notable two-fold improvement over pure CdS. This work opens up a new avenue for the substantial improvement of both the photocatalytic degradation efficiency and hydrogen evolution capacity, offering promise of a brighter future in photocatalysis research.

show abstract

“…The dynamic curve graphs were fitted to a first-order kinetics model based on a non-linear least square analysis. The formula is Ct = Xe −kt + E, where Ct represents the residual concentration of calculated polluted molecules, X stands for the process's amplitude, k denotes the pseudo-first-order rate constant, and E signifies the endpoint of the process [51]. The graphs were plotted with the x and y axes representing time t and Ct values, respectively (Figure 9b).…”

Section: The Photocatalytic Performance Of Tio 2 /P K-pc Compositesmentioning

confidence: 99%

Waste Biomass-Mediated Synthesis of TiO2/P, K-Containing Grapefruit Peel Biochar Composites with Enhanced Photocatalytic Activity

Wu,

Liu,

Bai

et al. 2024

Molecules

View full text Add to dashboard Cite

In this study, TiO2/P, K-containing grapefruit peel biochar (TiO2/P, K-PC) composites were synthesized in situ biomimetically using grapefruit peel as the bio-template and carbon source and tetrabutyl titanate as the titanium source. This was achieved using the two-step rotary impregnation–calcination method. Adjusting the calcination temperature of the sample in an air atmosphere could regulate the mass ratio of TiO2 to carbon. The prepared samples were subjected to an analysis of their compositions, structures, morphologies, and properties. It demonstrated that the prepared samples were complexes of anatase TiO2 and P, K-containing carbon, with the presence of graphitic carbon. They possessed a unique morphological structure with abundant pores and a large surface area. The grapefruit peel powder played a crucial role in the induction and assembly of TiO2/P, K-PC composites. The sample PCT-400-550 had the best photocatalytic activity, with the degradation rate of RhB, MO, and MB dye solutions reaching more than 99% within 30 min, with satisfactory cyclic stability. The outstanding photocatalytic activity can be credited to its unique morphology and the efficient collaboration between TiO2 and P, K-containing biochar.

show abstract

Fast and non-selective photodegradation of basic yellow 28, malachite green, tetracycline, and sulfamethazine using a nanosized ZnO synthesized from zinc ore

Cited by 31 publications

References 41 publications

Hydrogen Sulfide Removal via Sorption Process on Activated Carbon–Metal Oxide Composites Derived from Different Biomass Sources

Hydrogen Sulfide Removal via Sorption Process on Activated Carbon–Metal Oxide Composites Derived from Different Biomass Sources

C60- and CdS-Co-Modified Nano-Titanium Dioxide for Highly Efficient Photocatalysis and Hydrogen Production

Waste Biomass-Mediated Synthesis of TiO2/P, K-Containing Grapefruit Peel Biochar Composites with Enhanced Photocatalytic Activity

Contact Info

Product

Resources

About