Green and large‐scale preparation of reduced graphene oxide for electroreduction of nitrobenzene to p‐aminophenol

Liu, Wei Ming; Wang, Xue Qin; Wang, Cong Min; Chen, Guo Gui; Sun, Wei; Zheng, Chong

doi:10.1049/mnl.2016.0334

Cited by 6 publications

(2 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The specific surface area and pore volume of GO were evaluated as 56 m 2 /g and 0.23 cm 3 /g, respectively. The former is higher than those reported in previous studies (7-30 m 2 /g) [44][45][46]. This might be attributed to different degrees of exfoliation of GO during preparation of the material [47,48].…”

Section: Specific Surface Area and Pore Volumementioning

confidence: 60%

Photocatalytic Degradation of Organic Micropollutants in Water by Zr-MOF/GO Composites

et al. 2020

View full text Add to dashboard Cite

Nanocomposites of UiO-66 and graphene oxide (UiO-66_GO) were prepared with different GO contents by a one-step hydrothermal method, and their photocatalytic activities for the degradation of carbamazepine (CBZ) were investigated under ranges of GO loading, catalyst dose, initial pollutant concentration, and solution pH. The UiO-66_GO nanocomposites showed photocatalytic rate constant up to 0.0136 min−1 for CBZ degradation and its high overall removal efficiency (>90%) in 2 h. The photocatalytic rate constant over the UiO-66_GO nanocomposite was about 2.8 and 1.7 times higher than those over pristine GO and UiO-66, respectively. The enhancement of photocatalytic activity by GO was attributed to increased surface area and porosity, improved light absorption, and narrowed band gap. The composite also showed substantial recyclability and stability over five consecutive cycles of photocatalytic degradation. The experimental results indicated that O2●− and OH● are the responsible radicals for photocatalytic degradation, which helped us propose a photocatalytic mechanism for the enhanced CBZ photodegradation. This work provides a reference for the development of GO-based composite photocatalysts and expands the application of UiO-66 as a photocatalyst for the degradation of persistent micropollutants in water.

show abstract

Section: Specific Surface Area and Pore Volumementioning

confidence: 60%

Photocatalytic Degradation of Organic Micropollutants in Water by Zr-MOF/GO Composites

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Next, 3 g KMnO 4 was weighed and ground in a mortar, after which it was gradually and slowly added to the above-described solution. The preparation was continuously stirred for three days with a magnetic stirrer until complete graphite oxidation [34]. Ultrasonic treatment was conducted when the colour of the solution changed from dark purple to green and finally black-brown.…”

Section: Methodsmentioning

confidence: 99%

Adsorption-Based Removal of Sb (III) from Wastewater by Graphene Oxide-Modified Zirconium-Based Metal-Organic Framework Composites

Deng

Mao

Luo

et al. 2022

Adsorption Science & Technology

View full text Add to dashboard Cite

The treatment of Sb (III) wastewater produced from mining activities is uniquely challenging and has therefore garnered increasing attention. Here, an amino-modified zirconium-based metal-organic framework material (UiO-66-NH2) and its composites were loaded onto graphene oxide (GO@UiO-66-NH2) via the hydrothermal method, after which these materials were used to adsorb Sb (III) in mine wastewater. The effects of adsorption time, pH, initial Sb (III) concentration, temperature, and adsorbent dosage on the removal performance of Sb (III) were then investigated. The adsorption processes of Sb (III) were examined via adsorption kinetic, isotherm, and thermodynamic analyses. XRD, SEM, and FTIR analyses demonstrated the presence of a porous structure and high levels of oxygen-containing functional groups on the UiO-66-NH2 and GO@UiO-66-NH2 surfaces. During the Sb (III) adsorption process, the adsorption rates of UiO-66-NH2 and GO@UiO-66-NH2 were very fast in the first 10 minutes, and the adsorption equilibrium was achieved in 12 h, with the adsorption efficiencies of 91.76% and 93.79%, respectively. At a pH of 7.0, 25°C, an initial Sb (III) concentration of 100 mg/L, and an adsorbent dosage of 0.04 g/L, the maximum Sb (III) adsorption capacities of UiO-66-NH2 and GO@UiO-66-NH2 reached 39.23 mg/g and 61.07 mg/g, respectively. The adsorption process was accurately described by the Langmuir model, meaning that the Sb (III) was adsorbed through single-layer uniform adsorption. Moreover, the adsorption process was highly consistent with the pseudo-second-order model, which was indicative of spontaneous and endothermic chemical adsorption. Additionally, the Sb (III) removal efficiency could be maintained approximately 70% after sorption-desorption recycling four times. Therefore, our study provides an economical and effective method for the removal of Sb (III) in wastewater treatment.

show abstract

Size control of Pt nanoparticle catalysts for high-selectivity hydrogenation of nitrobenzene to p-aminophenol

Feng,

Zhen,

Chen

et al. 2024

Molecular Catalysis

View full text Add to dashboard Cite

Green and large‐scale preparation of reduced graphene oxide for electroreduction of nitrobenzene to p‐aminophenol

Cited by 6 publications

References 27 publications

Photocatalytic Degradation of Organic Micropollutants in Water by Zr-MOF/GO Composites

Photocatalytic Degradation of Organic Micropollutants in Water by Zr-MOF/GO Composites

Adsorption-Based Removal of Sb (III) from Wastewater by Graphene Oxide-Modified Zirconium-Based Metal-Organic Framework Composites

Size control of Pt nanoparticle catalysts for high-selectivity hydrogenation of nitrobenzene to p-aminophenol

Contact Info

Product

Resources

About