Mesoporous-rich calcium and potassium-activated carbons prepared from degreased spent coffee grounds for efficient removal of MnO<sub>4</sub><sup>2−</sup> in aqueous media

Bose, Suranjana; Kirk, Rebecca D; Maslen, Harry; Islas, Martha A Pardo; Smith, B.; Dugmore, Thomas I. J.; Matharu, Avtar S.

doi:10.1039/d2ra02214a

Cited by 5 publications

(4 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…36 Bose et al produced coffee-ground-derived ACs by ZnCl 2 activation and obtained a very low S BET of 684 m 2 g −1 and total pore volume of 0.526 cm 3 g −1 compared to those reported in other studies. 37 As evident from the aforementioned studies, although corrosive chemical activating agents have been mostly used for synthesizing well-developed microporous carbons, these ACs still exhibit moderate textural features. However, in our study, we obtained the highest S BET of 2156 m 2 g −1 and a superior V total of 1.076 cm 3 g −1 for CAC4.…”

Section: Textural Propertiesmentioning

confidence: 99%

Valorization of waste coffee grounds into microporous carbon materials for CO₂ adsorption

Kim,

Lee,

Park

2024

Green Chem.

View full text Add to dashboard Cite

show abstract

Section: Textural Propertiesmentioning

confidence: 99%

Valorization of waste coffee grounds into microporous carbon materials for CO₂ adsorption

Kim,

Lee,

Park

2024

Green Chem.

View full text Add to dashboard Cite

show abstract

“…Compared with other mesoporous particles, the pore size of ordered mesoporous carbon (OMC) is more uniform, and the distribution and arrangement of mesoporous carbon are more regular [43][44][45][46]. OMC is often used to design electrochemical signal amplifiers or immune signal sensors for biological detection, due to the electrical conductivity of regularly arranged carbon atoms [47,48].…”

Section: Ordered Mesoporous Carbonmentioning

confidence: 99%

Mesoporous Nanoparticles for Diagnosis and Treatment of Liver Cancer in the Era of Precise Medicine

Wang

Zhu

et al. 2022

Pharmaceutics

View full text Add to dashboard Cite

Primary liver cancer is the seventh-most-common cancer worldwide and the fourth-leading cause of cancer mortality. In the current era of precision medicine, the diagnosis and management of liver cancer are full of challenges and prospects. Mesoporous nanoparticles are often designed as specific carriers of drugs and imaging agents because of their special morphology and physical and chemical properties. In recent years, the design of the elemental composition and morphology of mesoporous nanoparticles have greatly improved their drug-loading efficiency, biocompatibility and biodegradability. Especially in the field of primary liver cancer, mesoporous nanoparticles have been modified as highly tumor-specific imaging contrast agents and targeting therapeutic medicine. Various generations of complexes and structures have been determined for the complicated clinical management requirements. In this review, we summarize these advanced mesoporous designs in the different diagnostic and therapeutic fields of liver cancer and discuss the relevant advantages and disadvantages of transforming applications. By comparing the material properties, drug-delivery characteristics and application methods of different kinds of mesoporous materials in liver cancer, we try to help determine the most suitable drug carriers and information media for future clinical trials. We hope to improve the fabrication of biomedical mesoporous nanoparticles and provide direct evidence for specific cancer management.

show abstract

“…It has been reported that these methods can have a negative impact on the environment, releasing contaminating residues of tannin, caffeine and polyphenols [33]. Other ways of valorizing SCGs have been proposed, such as converting them into biofuel, biodiesel, bioethanol or biomaterials [34] and producing biochar and AC [35][36][37]. These routes can help reinforce the circular economy approach by enabling continuous processes that reduce the accumulation of waste by transforming it into useful, value-added materials while promoting more environmentally friendly models [38,39].…”

Section: Introductionmentioning

confidence: 99%

Activated Carbon Prepared from Waste Coffee Grounds: Characterization and Adsorption Properties of Dyes

Aouay,

Attia,

Dammak

et al. 2024

Materials

View full text Add to dashboard Cite

Spent coffee grounds (SCGs) have great potential as a useful, value-added biological material. In this context, activated carbon (AC) was prepared from SCGs by an activation process using H3PO4 at 600 °C in the air and used as an adsorbent for the azo dye AO7, a model molecule for dye colorants found in textile industry effluents. X-ray diffraction, SEM and BET revealed that the AC was predominantly amorphous, consisting of a powder of 20–100 µm particles with mesopores averaging 5.5 nm in pore size. Adsorption kinetics followed a pseudo-second-order law, while the Langmuir model best fitted the experimental isotherm data (maximum capacity of 119.5 mg AO7 per AC g). The thermodynamic parameters revealed that adsorption was endothermic and spontaneous. All the characterizations indicated that adsorption occurred by physisorption via mainly π–π interactions. The best experimental removal efficiency optimized by means of a Box–Behnken design and response surface methodology was 98% for an initial AO7 concentration of 20 mg·L−1 at pH 7.5 with a dose of 0.285 g·L−1 of AC and a contact time of 40 min. These results clearly show that activated carbon prepared from SCGs can be a useful material for efficiently removing organic matter from aqueous solutions.

show abstract

Mesoporous-rich calcium and potassium-activated carbons prepared from degreased spent coffee grounds for efficient removal of MnO₄²⁻ in aqueous media

Abstract: Spent coffee grounds are an interesting high volume renewable resource for valorisation. Activation with CaCl2 produces mesoporous carbons with high capacity for removal of MnO42−.

Cited by 5 publications

References 33 publications

Valorization of waste coffee grounds into microporous carbon materials for CO₂ adsorption

Valorization of waste coffee grounds into microporous carbon materials for CO₂ adsorption

Mesoporous Nanoparticles for Diagnosis and Treatment of Liver Cancer in the Era of Precise Medicine

Activated Carbon Prepared from Waste Coffee Grounds: Characterization and Adsorption Properties of Dyes

Contact Info

Product

Resources

About

Mesoporous-rich calcium and potassium-activated carbons prepared from degreased spent coffee grounds for efficient removal of MnO42− in aqueous media

Abstract: Spent coffee grounds are an interesting high volume renewable resource for valorisation. Activation with CaCl2 produces mesoporous carbons with high capacity for removal of MnO42−.

Cited by 5 publications

References 33 publications

Valorization of waste coffee grounds into microporous carbon materials for CO2 adsorption

Valorization of waste coffee grounds into microporous carbon materials for CO2 adsorption

Mesoporous Nanoparticles for Diagnosis and Treatment of Liver Cancer in the Era of Precise Medicine

Activated Carbon Prepared from Waste Coffee Grounds: Characterization and Adsorption Properties of Dyes

Contact Info

Product

Resources

About

Mesoporous-rich calcium and potassium-activated carbons prepared from degreased spent coffee grounds for efficient removal of MnO₄²⁻ in aqueous media

Valorization of waste coffee grounds into microporous carbon materials for CO₂ adsorption

Valorization of waste coffee grounds into microporous carbon materials for CO₂ adsorption