Permanent Boron Doped Graphene with high Homogeneity using Phenylboronic Acid

Altuntepe, Ali; Zan, Recep

doi:10.1016/j.molstruc.2020.129629

Cited by 11 publications

(4 citation statements)

References 17 publications

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“…The deconvoluted C1s spectra revealed that GO possessed functional groups of C-C and C-O corresponding to binding energies of 284.10 and 286.31 eV, respectively [43]. Similarly, the 3D/BGO adsorbent exhibited carbonaceous functional groups such as the COOH (288.2 eV), C-C (285.77 eV) and C-O groups (284.25 eV) [44]. The O1s spectra shown in Figure 5b,d revealed that GO possessed the O-C groups (531.75 eV) while 3D/BGO contained the O-C and O=C groups, as evident by the peaks at 531.65 and 530.01 eV, respectively [43].…”

Section: Xps Analysismentioning

confidence: 98%

Remediation of Amitriptyline Pharmaceutical Wastewater by Heteroatom-Doped Graphene Oxide: Process Optimization and Packed-Bed Studies

et al. 2023

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Amitriptyline residue released into the aquatic ecosystem can have detrimental consequences on marine organisms and human wellbeing via consumption of polluted water. With a uniquely large surface area and abundant functionalities, graphene oxide adsorption offers a remediation solution for such water pollution. This study focused on synthesizing a novel graphene-based adsorbent via ice-templating of boron-doped graphene substrate. The batch adsorption performance of the as-synthesized adsorbent was explored by central composite design (CCD), while its potential large-scale application was evaluated with a packed-bed column study. The CCD optimized conditions of 12.5 mg dosage, 32 min adsorption time, 30 °C operating temperature and 70 ppm concentration produced the highest removal efficiency of 87.72%. The results of the packed-bed study indicated that continuous adsorption of amitriptyline was best performed at a graphene bed of 3.5 cm in height, with 100 ppm of the pharmaceutical solution flowing at 2 mL/min. Furthermore, the breakthrough curve was effectively portrayed by the Log Bohart–Adams model. The as-synthesized adsorbent showed a high regeneration potential using ethanol eluent via multiple adsorption–desorption cycles. The results suggest the boron-doped graphene adsorbent in packed-bed as a highly effective system to remediate amitriptyline in an aqueous environment.

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Section: Xps Analysismentioning

confidence: 98%

Remediation of Amitriptyline Pharmaceutical Wastewater by Heteroatom-Doped Graphene Oxide: Process Optimization and Packed-Bed Studies

et al. 2023

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“…However, pristine graphene is a zero-bandwidth material, which greatly limits the use of graphene in electronic devices [ 12 , 13 , 14 ]. Among various doping methods, in situ synthesis techniques using heteroatom doping (e.g., nitrogen, boron, sulfur, and fluorine) are of the most promising methods to adjust the electrical properties of graphene [ 15 , 16 , 17 , 18 ]. Doped atoms are added to the graphene lattice to form covalent bonds with C atoms, which will change the electronic structure of graphene and can open the band gap of graphene by suppressing the density of states near the Fermi energy level [ 19 , 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

Growth of Low-Defect Nitrogen-Doped Graphene Film Using Condensation-Assisted Chemical Vapor Deposition Method

Guo

Yin

et al. 2023

Materials

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It is significantly important to modulate the electrical properties of graphene films through doping for building desired electronic devices. One of the effective doping methods is the chemical vapor deposition (CVD) of graphene films with heteroatom doping during the process, but this usually results in nitrogen-doped graphene with low doping levels, high defect density, and low carrier mobility. In this work, we developed a novel condensation-assisted CVD method for the synthesis of high-quality nitrogen-doped graphene (NG) films at low temperatures of 400 °C using solid 3,4,5-trichloropyridine as a carbon and nitrogen source. The condensation system was employed to reduce the volatilization of the solid source during the non-growth stage, which leads to a great improvement of quality of as-prepared NG films. Compared to the one synthesized using conventional CVD methods, the NG films synthesized using condensation-assisted CVD present extremely low defects with a ratio of from D- to G-peak intensity (ID/IG) in the Raman spectrum lower than 0.35. The corresponding total N content, graphitic nitrogen/total nitrogen ratio, and carrier mobility reach 3.2 at%, 67%, and 727 cm2V−1S−1, respectively. This improved condensation-assisted CVD method provides a facile and well-controlled approach for fabricating high-quality NG films, which would be very useful for building electronic devices with high electrical performance.

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“…Thus, graphene obtained with these techniques are not much preferred for optoelectronic devices, which requires films with high homogeneity. Among those techniques, CVD is one of the mostly used one that enables high quality and large-scale graphene films [12,13]. Graphene, in thin film form, obtained using CVD method is grown on transition metal substrate such as Nickel (Ni), Cooper (Cu), Platinum (Pt), Iridium (Ir), and Gold (Au) by using various solid, liquid and gas precursors as carbon sources during the synthesis [14].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Impact of Growth Time and Methane Flow on Graphene Synthesis using Nickel Foil

et al. 2021

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Graphene has been one of the most investigated nanomaterials in recent years due to its one atom thickness nature and its extraordinary properties such as high conductivity and excellent transmittance in visible range, bendability and high carrier mobility. Although there are many techniques to grow graphene, chemical vapor deposition technique is one of the best approach to synthesize homogeneous and commercial scale graphene in thin film form. Many parameters can affect the quality and homogeneity of the graphene film that is grown with this technique. In this study, two growth parameters which are methane flow rate and growth time were investigated to find out their effect on the quality of the graphene film, which is grown on nickel foil. Graphene film grown with different flow rates of methane (from 20 to 50 sccm) and growth time (50 to 20 mins.) were examined. We found that single layer graphene film could only be grown under 20 sccm methane flow in 20 mins. growth time as evidenced via Raman spectroscopy measurements. Furthermore, the single layer graphene film was found to be in high homogeneity as confirmed by Raman mapping. On the other hand, multi-layer graphene film was obtained by increasing both methane flow and growth time.

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Permanent Boron Doped Graphene with high Homogeneity using Phenylboronic Acid

Cited by 11 publications

References 17 publications

Remediation of Amitriptyline Pharmaceutical Wastewater by Heteroatom-Doped Graphene Oxide: Process Optimization and Packed-Bed Studies

Remediation of Amitriptyline Pharmaceutical Wastewater by Heteroatom-Doped Graphene Oxide: Process Optimization and Packed-Bed Studies

Growth of Low-Defect Nitrogen-Doped Graphene Film Using Condensation-Assisted Chemical Vapor Deposition Method

Investigating the Impact of Growth Time and Methane Flow on Graphene Synthesis using Nickel Foil

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