Mesoporous spongy Ni–Co oxides@wheat straw-derived SiO2 for adsorption and photocatalytic degradation of methylene blue pollutants

Hussein, M.A.; Motawea, Mohamed M.; Elsenety, Mohamed M.; El‐Bahy, Salah M.; Gomaa, Hassanien

doi:10.1007/s13204-021-02318-0

Cited by 28 publications

(11 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 4D represents the impact of the increase in the C o of CR on the efficacy of the adsorption process. The increase in the C o of CR from 50 to 300 mg/g increases q from 99.63 to 360.00 mg/g which may be due to the boosting in the deriving forces of the CR molecules, overcoming the mass resistance forces that hinder the CR molecules to reach the α-kGl-AmCsSB surface (Gomaa et al 2022a;Hussein et al 2022). Noteworthy, α-kGl-AmCsSB not only provides a high efficiency but also a fast separation since the CR adsorption process reached equilibrium within only 30 min.…”

Section: The Influence Of the Cr Initial Concentrationmentioning

confidence: 99%

Sandwich-like construction of a new aminated chitosan Schiff base for efficient removal of Congo red

et al. 2023

View full text Add to dashboard Cite

Herein, a novel sandwich-like α-ketoglutaric acid Schiff base-aminated chitosan composite (α-kGl-AmCsSB) was fabricated by reacting α-ketoglutaric acid and aminated chitosan. The as-fabricated α-kGl-AmCsSB was inspected by diversified characterization tools to determine its morphology, surface charge, and chemical composition as well as define the linkage pathway between α-kGl and AmCs. The SEM images demonstrated a spongy network of AmCs with interconnected pores structure which turned to a quite rough surface due to the linkage of α-kGl to the free amine groups of AmCs. Notably, the XPS and FTIR spectra suggested the linkage of α-kGl to the amine group of AmCs. The experimental results implied the superior adsorption efficiency of Congo red (CR) onto α-kGl-AmCsSB since the maximum adsorption capacity (qmax) reached 434.78 mg/g at 25 °C and pH 3. Based on kinetics data, the adsorption of CR on α-kGl-AmCsSB followed pseudo-second-order model. Furthermore, D-R model infers that the CR adsorption onto α-kGl-AmCsSB occurred via physical interactions since the E value < 8 kJ/mol. The recyclability test was implemented for five cycles with R% > 72%. More importantly, the adsorption mechanism of CR onto α-kGl-AmCsSB was proposed and discussed. Ultimately, the novel sandwich-like α-kGl-AmCsSB exhibited advanced adsorption performance toward CR along with excellent reusability. Based on these results, we recommend more modifications on α-kGl-AmCsSB for exploiting its remarkable advantages and applying it on a large scale.

show abstract

Section: The Influence Of the Cr Initial Concentrationmentioning

confidence: 99%

Sandwich-like construction of a new aminated chitosan Schiff base for efficient removal of Congo red

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Several biological, physical, and chemical treatment techniques have been adopted to remove these wastes from water bodies. Biological processes such as bioreactors, biologically activated sludge, microbiological treatments, and lagoons possess many positive aspects including getting rid of biodegradable organic matter along with a significant capability of removing biological oxygen demand, and suspended solids 19,20 . On the other hand, they reveal several drawbacks such as slow rate of degradation, low biodegradability of dyes, and the possible formation of biological sludge 21,22 .…”

Section: Introductionmentioning

confidence: 99%

A comprehensive review on LDH-based catalysts to activate persulfates for the degradation of organic pollutants

et al. 2023

View full text Add to dashboard Cite

Degradation of organic contaminants into less toxic substances is the best option to remove these compounds rather than using conventional techniques. The sulfate radical-based-advanced oxidation process is an effective strategy that degrades organic contaminants by activating peroxymonosulfate (PMS). Such a strategy generates singlet oxygen (1O2), hydroxyl ($$^ \bullet \!{{{\mathrm{OH}}}}$$ ∙ OH ), and sulfate ($${{{\mathrm{SO}}}}_4^{ \bullet\! - }$$ SO 4 ∙ − ) radicals. $${{{\mathrm{SO}}}}_4^{ \bullet \!- }$$ SO 4 ∙ − is distinguished by its high oxidation selectivity and activity toward the degradation of organic contaminates compared to other radicals. Various catalysts are employed in PMS activation including layered doubled hydroxides (LDHs), which are characterized by their facile synthesis and high catalytic activity. This review article is the first attempt to compile the recent progress in the degradation of common organic pollutants including aromatic compounds, pharmaceutical residues, and dyes via the PMS activation using LDH-based catalysts. The degradation pathways, reaction parameters’ influence, stability of LDHs, and comparisons between different LDH-based catalysts are investigated in this work.

show abstract

“…Up to now, a majority of the reported photocatalysts exist in the state of powder, which causes difficulty in separation and recycling when it comes to practical applications [ 29 , 30 ], highlighting the need for preparing immobilized photocatalysts with both high activity and recyclability [ 31 ]. Carbon cloth has unique physical and chemical properties such as a large specific surface area, excellent electrical conductivity, high strength, good thermal stability, and good corrosion resistance, which has been widely used in supercapacitors, lithium–ion batteries, electrocatalysis, microwave absorption, and other fields [ 32 , 33 , 34 ].…”

Section: Introductionmentioning

confidence: 99%

Recyclable Carbon Cloth-Supported ZnO@Ag3PO4 Core–Shell Structure for Photocatalytic Degradation of Organic Dye

Guan

Wang

et al. 2023

Toxics

View full text Add to dashboard Cite

The extensive use of organic dyes in industry has caused serious environmental problems, and photocatalysis is a potential solution to water pollution by organic dyes. The practical application of powdery photocatalysts is usually limited by the rapid recombination of charge carriers and difficulty in recycling. In this study, recyclable carbon cloth-supported ZnO@Ag3PO4 composite with a core–shell structure was successfully prepared by solvothermal treatment and subsequent impregnation–deposition. The as-prepared carbon cloth-supported ZnO@Ag3PO4 composite showed an improved photocatalytic activity and stability for the degradation of rhodamine B (RhB), a model organic dye, under visible light irradiation. The decomposition ratio of RhB reached 87.1% after exposure to visible light for 100 min, corresponding to a reaction rate constant that was 4.8 and 15.9 times that of carbon cloth-supported Ag3PO4 or ZnO alone. The enhanced performance of the composite can be attributed to the effectively inhibited recombination of photoinduced electron–hole pairs by the S-scheme heterojunction. The carbon fibers further promoted the transfer of charges. Moreover, the carbon cloth-supported ZnO@Ag3PO4 can be easily separated from the solution and repeatedly used, demonstrating a fair recyclability and potential in practical applications.

show abstract

Mesoporous spongy Ni–Co oxides@wheat straw-derived SiO2 for adsorption and photocatalytic degradation of methylene blue pollutants

Cited by 28 publications

References 63 publications

Sandwich-like construction of a new aminated chitosan Schiff base for efficient removal of Congo red

Sandwich-like construction of a new aminated chitosan Schiff base for efficient removal of Congo red

A comprehensive review on LDH-based catalysts to activate persulfates for the degradation of organic pollutants

Recyclable Carbon Cloth-Supported ZnO@Ag3PO4 Core–Shell Structure for Photocatalytic Degradation of Organic Dye

Contact Info

Product

Resources

About