Heteroatom-doped graphene aerogels and carbon-magnetite catalysts for the heterogeneous electro-Fenton degradation of acetaminophen in aqueous solution

Fernández-Sáez, Nerea; Villela-Martínez, Diana Elizabeth; Carrasco-Marín, Francisco; Pérez-Cadenas, Agustı́n F.; Pastrana‐Martínez, Luisa M.

doi:10.1016/j.jcat.2019.08.020

Cited by 39 publications

(15 citation statements)

References 64 publications

(73 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1560 cm −1 ) and to the vibration of B-C bond and C-O bond (at ca. 1100 cm −1 ), as previously observed [ 46 , 59 ]. On the other hand, the peaks associated to the oxygen functional groups in the doped-graphene materials exhibited lower intensities in comparison with the obtained for the GO sample ( Figure 1 ).…”

Section: Resultssupporting

confidence: 89%

“…N/S-and B-doped graphene were prepared with a GO suspension (1.0 g L −1 ) and thiourea, CH 4 N 2 S (99%, Alfa Aesar, Haverhill, MA, USA) [46], or boric acid, H 3 BO 3 (Acros Organics, Geel, Belgium) [40], as N/S or B precursors, respectively by hydrothermal reduction [47]. The GO: Precursor ratio was selected as 1:10, in agreement with the optimized value in a previous study [46]. In a typical synthesis, an appropriate amount of thiourea or H 3 BO 3 was dissolved into 60 mL of GO suspension and stirred for 10 min followed by sonication for 15 min.…”

Section: Synthesis Of Heteroatom Reduced Graphene Oxide (Rgo)mentioning

confidence: 99%

“…1560 cm −1 and another attributed to the stretching vibration of the C-S-C groups at ca. 1100-1145 cm −1 [37,46,[56][57][58]. In the case of rGOB, there are also two main peaks in the spectrum, attributed to the vibration of C=C bond (at ca.…”

Section: Materials Characterizationmentioning

confidence: 99%

“…The XPS analysis of the rGONS sample (labelled as rGO-NS-10) and B-doped graphene (prepared by a similar synthesis procedure to the rGOB sample) was obtained and discussed in previous studies [40,46]. The nitrogen species in the rGONS material were the amino group (-NH 2 ), N-pyridinic species (N6), N-pyrrolic form (N5), and N-graphitic (NQ), whereas the sulphur groups correspond mainly to S-thiophene.…”

Section: Materials Characterizationmentioning

confidence: 99%

See 3 more Smart Citations

Functionalized Graphene Derivatives and TiO2 for High Visible Light Photodegradation of Azo Dyes

et al. 2020

View full text Add to dashboard Cite

Functionalized graphene derivatives including graphene oxide (GO), reduced graphene oxide (rGO), and heteroatom (nitrogen/sulphur (N/S) or boron (B))-doped graphene were used to synthesize composites with TiO2 (T). The photocatalytic performance of composites was assessed for the degradation of Orange G dye (OG) under simulated solar light. All the prepared graphene derivatives—TiO2 composites showed better photocatalytic performance than bare TiO2. A higher photocatalytic activity was found for the composites containing GO and N/S co-doped rGO (kapp = 109.2 × 10−3 and 48.4 × 10−3 min−1, for GO-T and rGONS-T, respectively). The influence of both initial solution pH and the reactive species involved in the OG degradation pathway were studied. The photocatalytic activity of the samples decreased with the increase of the initial pH (from 3.0 to 10.0) due to the occurrence of electrostatic repulsive forces between the photocatalysts surface and the molecules of OG, both negatively charged. The use of selective scavengers showed that although the photogenerated holes dominate the degradation mechanism, radicals and singlet oxygen also participate in the OG degradation pathway. In addition, reutilization experiments indicated that the samples were stable under the reaction conditions used.

show abstract

Section: Resultssupporting

confidence: 89%

Section: Synthesis Of Heteroatom Reduced Graphene Oxide (Rgo)mentioning

confidence: 99%

Section: Materials Characterizationmentioning

confidence: 99%

Section: Materials Characterizationmentioning

confidence: 99%

See 2 more Smart Citations

Functionalized Graphene Derivatives and TiO2 for High Visible Light Photodegradation of Azo Dyes

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Fe 3+ + e − → Fe 2+ (6) The degradation of acetaminophen in an electro-Fenton process employing heteroatomdoped graphene aerogel cathode and carbon-magnetite catalyst, showed complete degradation was achieved in 240 min, while 45.5% mineralization efficiency was achieved in 360 min [188]. The degradation efficiency was influenced by the amount and nature of heteroatom, while the mineralization efficiency was strongly correlated to the amount of iron leached from the catalyst.…”

Section: Electrocatalytic Processmentioning

confidence: 99%

Graphene-Based Composites as Catalysts for the Degradation of Pharmaceuticals

Olatunde

Onwudiwe

2021

IJERPH

View full text Add to dashboard Cite

The incessant release of pharmaceuticals into the aquatic environment continues to be a subject of increasing concern. This is because of the growing demand for potable water sources and the potential health hazards which these pollutants pose to aquatic animals and humans. The inability of conventional water treatment systems to remove these compounds creates the need for new treatment systems in order to deal with these class of compounds. This review focuses on advanced oxidation processes that employ graphene-based composites as catalysts for the degradation of pharmaceuticals. These composites have been identified to possess enhanced catalytic activity due to increased surface area and reduced charge carrier recombination. The techniques employed in synthesizing these composites have been explored and five different advanced oxidation processes—direct degradation process, chemical oxidation process, photocatalysis, electrocatalyis processes and sonocatalytic/sono-photocatalytic processes—have been studied in terms of their enhanced catalytic activity. Finally, a comparative analysis of the processes that employ graphene-based composites was done in terms of process efficiency, reaction rate, mineralization efficiency and time required to achieve 90% degradation.

show abstract

Recent Advances in Enhancing Oxygen Reduction Reaction Performance for Non‐Noble‐Metal Electrocatalysts Derived from Electrospinning

Xie

Tang

et al. 2021

Energy Tech

View full text Add to dashboard Cite

Carbonaceous materials originated from electrospinning fibers with hierarchical porosity and good conductivity have attracted intensive attention in the field of electrocatalysis, especially for the oxygen reduction reaction (ORR). Large batches of fibers with uniform sizes can be easily fabricated by electrospinning technology as the precursors of carbon fibers, manifesting the potential to develop a large‐scale, low‐cost, high‐activity ORR catalyst production line for new energy devices such as fuel cells and metal–air batteries. Herein, based on a simple understanding of the ORR mechanism and electrospinning technology, those investigations on synthesizing non‐noble‐metal ORR catalysts through electrospinning in recent years are reviewed. The advantages brought by applying electrospinning technology to the preparation of ORR catalysts are briefly explained. Electrospinning fibers with specific structures for ORR catalysis obtained by innovated spinnerets are displayed. Importantly, the strategies of improving ORR performance for electrospinning fibers through substrate functionalization and active site regulation are discussed in detail. Finally, the prospects and challenges of developing electrospinning technology applied to non‐noble metal ORR electrocatalysis are proposed.

show abstract

Heteroatom-doped graphene aerogels and carbon-magnetite catalysts for the heterogeneous electro-Fenton degradation of acetaminophen in aqueous solution

Cited by 39 publications

References 64 publications

Functionalized Graphene Derivatives and TiO2 for High Visible Light Photodegradation of Azo Dyes

Functionalized Graphene Derivatives and TiO2 for High Visible Light Photodegradation of Azo Dyes

Graphene-Based Composites as Catalysts for the Degradation of Pharmaceuticals

Recent Advances in Enhancing Oxygen Reduction Reaction Performance for Non‐Noble‐Metal Electrocatalysts Derived from Electrospinning

Contact Info

Product

Resources

About