Removal and surface photocatalytic degradation of methylene blue on carbon nanostructures

Ramírez-Aparicio, Jeannete; Samaniego-Benítez, J. Enrique; Murillo-Tovar, Mario Alfonso; Benítez‐Benítez, José Luis; Muñoz‐Sandoval, Emilio; García-Betancourt, María Luisa

doi:10.1016/j.diamond.2021.108544

Cited by 25 publications

(9 citation statements)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The main objective of these strategies is to enhance the light absorption and the charge carrier's generation to improve photocatalysis. The first method to tune the band structure is to modify the energy levels to enhance UV and visible light absorption by doping with atoms other than carbon, such as N, P, or Cl [27,28]. Functionalization is another route to improve photocatalytic activity by altering the band structure with the new energy state introduction without altering the carbon nanotube structure [29].…”

Section: Strategies For Tuning the Band Structure For Enhanced Photoc...mentioning

confidence: 99%

“…Due to their graphitic structure, CNTs, which contribute to the existence of π and dipole-dipole interactions, SWCNTs, and MWCNTs may have photocatalytic properties. These properties will help to promote the formation of active species that will eventually result in the photocatalytic degradation of the organic dye [27]. Figure 3 presents a schematic for MB photodegradation, based on previous works [27,61].…”

Section: Photodegradation Of Methylene Blue In Carbon Nanotubesmentioning

confidence: 99%

See 1 more Smart Citation

Adsorption and Photocatalytic Degradation of Methylene Blue in Carbon Nanotubes: A Review with Bibliometric Analysis

Osorio-Aguilar,

Saldarriaga-Noreña,

Murillo-Tovar

et al. 2023

Catalysts

Self Cite

View full text Add to dashboard Cite

Wastewater-containing dyes are an environmental problem. The prime source of dye pollutants is the textile industry, such as paper manufacturing, food processing, leather, pigments, etc. Dye removal from wastewater using nanotechnology has received attention in recent decades thanks to efficient nanomaterials improving traditional technologies. In recent years, multiple research reports on carbon nanotubes for dye removal and photocatalytic dye degradation provided substantial insight into the comprehension of nanotechnology and remediation. This work presents a review and bibliometric analysis of carbon nanotubes for dye removal and photocatalytic dye degradation, which have an environmental impact today. The bibliometric study showed that the current research tendency on carbon nanotubes applied in dye removal and photocatalysis is still growing. According to research, this work observed that carbon nanotubes for dye removal exhibit high removal and efficient photocatalysis activity, indicating the functionality of nanotechnology for environmental remediation. The analysis of the parameters involved in the removal studies, such as temperature and pH, showed adsorption behavior. The photodegradation of methylene blue demonstrated the photocatalytic activity of carbon nanotubes attributed to the sp2 lattice of graphitic configuration.

show abstract

Section: Strategies For Tuning the Band Structure For Enhanced Photoc...mentioning

confidence: 99%

Section: Photodegradation Of Methylene Blue In Carbon Nanotubesmentioning

confidence: 99%

Adsorption and Photocatalytic Degradation of Methylene Blue in Carbon Nanotubes: A Review with Bibliometric Analysis

Osorio-Aguilar,

Saldarriaga-Noreña,

Murillo-Tovar

et al. 2023

Catalysts

Self Cite

View full text Add to dashboard Cite

show abstract

“…In general, utilizing biochar as a support catalytic will have a higher surface area compared to mineral supports [35]. Figure 3 illustrates the adsorption and desorption isotherm of nitrogen gas for biochar and biochar/ZnO-Ce samples.…”

Section: Characteristics Of the Nanocatalystmentioning

confidence: 99%

Catalytic performance of ZnO-Ce nanoparticles decorated on biochar derived from Milkvetch for photocatalytic removal of reactive blue 19 dye

Jahani,

Maleki,

Mansouri

et al. 2023

Preprint

View full text Add to dashboard Cite

In this work, the photocatalytic removal of reactive blue 19 (RB19) dye was investigated by employing ZnO-Ce nanoparticles decorated with biochar under LED irradiation. Synthesis of ZnO-Ce nanoparticles decorated with biochar was performed utilizing the co-precipitation procedure, and the texture and morphologyof the fabricated nanocomposite were analyzed using EDX, FESEM, XRD, TEM, BET, and FTIR techniques. Moreover, FESEM images demonstrated that ZnO-Ce nanoparticles were successfully decoratedon the surface of biochar. The specific surface areas of biochar and biochar@ZnO-Ce were 34.518 and 636.52 m2/g, respectively. To achieve the maximum yield in the removal of RB19 dye, the influence of operating variables including dye concentration, LED lamp power, biochar@ZnO-Ce catalyst dose, pH, and H2O2dose were explored. Besides, the maximum percentage of RB19 dye removal was 96.47% under optimal conditions, i.e. catalyst dosage of 100 mg, H2O2 dosage of 1 mL, pH of 9, initial dye concentration of 5 ppm, LED power of 50 W, and reaction time of 140 min. Also, the kinetic information revealed that the removal of RB19 dye was in accordance with the pseudo-first order kinetic model, and the reaction rate constant and correlation coefficient were determined to be 0.045 min− 1 and R2 = 0.990, respectively. Also, the recyclability of biochar@ZnO-Ce nanocatalysts was promising over five runs, and only 6.08% of RB19 dye removal efficiency decreased. Therefore, it can be concluded that the biochar@ZnO-Ce photocatalyst can be promisingly applied for the removal of azo dyes in the aqueous solutions.

show abstract

“…It is a cationic dye with a chemical structure presented in Figure 1 . It is known to cause various undesirable damage to living creatures, including permanent eye burns, breathing disorders, heart rate increases, tissue necrosis, nausea, vomiting, mental confusion, and painful micturition [ 10 ]. For this reason, the dye methylene blue was chosen as a cation dye model in this study.…”

Section: Introductionmentioning

confidence: 99%

“…However, the available technological means to improve the adsorption process are adverse. Adsorption is a surface phenomenon based on the interaction between adsorbents in the solid phase and adsorbates in the liquid or gas phase [ 10 , 11 , 12 , 13 ]. The efficiency, capacity, and reusability of the adsorbent material depend on the functional groups on the adsorbent surface.…”

Section: Introductionmentioning

confidence: 99%

Environmental-Friendly Adsorbent Composite Based on Hydroxyapatite/Hydroxypropyl Methyl-Cellulose for Removal of Cationic Dyes from an Aqueous Solution

et al. 2022

View full text Add to dashboard Cite

The aim of this study is to develop a new, efficient, and inexpensive natural-based adsorbent with high efficacy for the cationic dye methylene blue (MB). A natural-based nanocomposite based on hydroxyapatite (HAp) and hydroxypropyl methylcellulose (HPMC) was selected for this purpose. It was synthesized by the dissolution/reprecipitation method. A film with a homogeneous and smooth surface composed of nanoparticles was prepared from the nanocomposite. HPMC and HAp biopolymers were selected due to their compatibility, biodegradability, and non-toxicity. Total reflectance infrared spectroscopy (ATR-FTIR), scanning electron microscopy (SEM), and calorimetric/thermal gravimetric (DSC/TGA) analysis results revealed the existence of strong physical interaction between the composite components. Scanning electron microscopy (SEM) observations show a composite sheet with a homogenous and smooth surface, indicating excellent compatibility between HPMC and HAp in the composite. The nanocomposite was evaluated as an adsorbent for organic dyes in an aqueous solution. The effects of solution pH, initial MB concentration, composite concentration, and adsorption time on the adsorption efficiency were evaluated. The highest adsorption rate was seen as 52.0 mg of MB/g composite. The adsorption rate reached equilibrium in about 20 min. Fitting of the adsorption data to the Langmuir and Freundlich adsorption models was investigated. Results showed that the adsorption process follows the Langmuir isotherm model. The kinetic study results revealed that the adsorption process was pseudo-second-order. The herein composite is an excellent alternative for use as contemporary industrial-scale adsorbents.

show abstract

Removal and surface photocatalytic degradation of methylene blue on carbon nanostructures

Cited by 25 publications

References 59 publications

Adsorption and Photocatalytic Degradation of Methylene Blue in Carbon Nanotubes: A Review with Bibliometric Analysis

Adsorption and Photocatalytic Degradation of Methylene Blue in Carbon Nanotubes: A Review with Bibliometric Analysis

Catalytic performance of ZnO-Ce nanoparticles decorated on biochar derived from Milkvetch for photocatalytic removal of reactive blue 19 dye

Environmental-Friendly Adsorbent Composite Based on Hydroxyapatite/Hydroxypropyl Methyl-Cellulose for Removal of Cationic Dyes from an Aqueous Solution

Contact Info

Product

Resources

About