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The metallofullerenol Gd@C82(OH)22 is regarded as a potential anti-tumor therapeutic due to its metastasis inhibition in numerous experiments. As a promising nanodrug, the toxicity of Gd@C82(OH)22 requires thorough assessment before substantial clinical application. In the present study, we focus on the interaction between Gd@C82(OH)22 and the cytochrome P450 (CYP) enzyme CYP2C8. CYP2C8 can metabolize...
Heteroatom-doped carbon structures have successfully entered the field of advanced functional materials but their impact on living organisms is still poorly examined. Interactions between typical Gram-negative bacteria Escherichia coli, Gram-positive Bacillus cereus and heteroatom-doped nanoporous carbons are studied in this paper. Four types of carbonaceous materials, that is N-doped, S-doped, S/N-co-doped...
Nacre-like composite is promising to realize the intriguing properties of graphene in metal matrix. However, how to fabricate the composite with nacre-like structure and improve effectively its property is still challenging. Here we report a facile synthesis of reduced graphene oxide(RGO)/copper(Cu) composite with hierarchical layered structure based on molecular level mixing and self-assembly. The...
Macroscopic, free-standing and flexible three dimensional porous carbon aerogel holds great potential for supercapacitor design but is often hindered by their inherent hydrophobicity, structure-derived fatigue failure and weak elasticity. In this study, a strong and flexible nitrogen-doped carbon aerogel is prepared by direct pyrolysis of bamboo cellulose nanofibers /melamine/graphene oxide hybrid...
We prepared poly(vinylidene fluoride) (PVDF)/carbon/Ni-chain composites by dispersing Ni chains, and either carbon nanotubes (CNTs) or graphene nanoplatelets (GNPs) into a PVDF solution. The electrical conductivity and the electromagnetic interference (EMI) shielding properties of the PVDF/CNT/Ni-chain and the PVDF/GNP/Ni-chain composites were increased by increasing the Ni-chain filler content. The...
Recently, He et al. succeeded in covalently linking porphines to graphene edges on a Ag(111) substrate by dehydrogenative coupling [Nat. Chem. 9 (1) (2017) 33–38], thus created a new hybrid material with tunable functionalities. Motivated by this work, we further investigate the electron transport properties of three porphine/graphene coupling motifs observed by scanning-probe technology with submolecular...
Graphene nanosheets (GNS) are the promising nano-reinforcements to fabricate bulk graphene-metal composites due to their excellent mechanical properties and large yield. However, the effective synthesis of such bulk graphene reinforced magnesium (Mg) composites remains challenging because of the poor interfacial bonding and the aggregation of GNS. Here, GNS possessing about 12 at. % residual oxygen...
Composites of nanoparticles/graphene sheets show an improved lithium storage capacity and cycling stability compared to bare graphene sheets (GSs). They are therefore considered as one of the promising candidates of anode materials for portable electrochemical energy storage devices requiring lightweight and ultrathin batteries. The practical application of these materials relies on the in-depth understanding...
Nitrogen-doped ordered mesoporous carbon spheres (N-OMCS) were prepared by a facile one-pot soft-templating and one-step pyrolysis method. The as-obtained N-OMCS possesses an average diameter of around 300 nm, a moderate specific surface area of 439 m2 g−1 and uniform mesopore size at around 5.0 nm. Owing to the ordered meso-structure and nitrogen doping, the N-OMCS materials, when used as supercapacitor...
Being a representative candidate from the two-dimensional (2D) materials family, graphene has been one of the most intensively researched candidates because of its ultrahigh carrier mobility, quantum Hall effects, excellent mechanical property and high optical transmittance. Unfortunately, the lack of a band gap makes graphene a poor fit for digital electronics, where the current on/off ratio is critical...
The interaction of the noble atoms (Ar and Xe) with single-walled carbon nanotube (SWCNT) bundles are investigated using Raman spectroscopy in conjunction with computational modeling known as ReaxFF force field. SWCNT bundles were deposited on transmission electron microscopy (TEM) grids, and different noble gases were adsorbed onto the nanotubes at 20 K. Raman spectra acquired show significant frequency...
Red phosphorus (P) shows enormous potential as a high-performance and cost-effective Lithium (Li)-ion anode material. It alloys with Li forming Li3P, which translates to a theoretical capacity of ∼2595 mAh g−1 (∼7 times better than graphite). Further, the cost of bulk P is comparable to battery-grade graphite. However, there are two intrinsic limitations that prevent deployment of P, viz., its low...
In this study, the photocatalytic activity of graphitic carbon nitride (g-C3N4) was improved by codoping S and P on the interstitial and carbon sites of its aromatic heptazine units, respectively. X-ray photoelectron spectra and X-ray diffraction measurements demonstrated that P covalently bonded with N because of the substitution of C with P and that S was located at the interstitial sites with relatively...
Although hard-templated ordered mesoporous carbons (OMCs) have been widely studied in the past decades, their surface properties, especially surface wettability, have not been investigated in detail. This study shows that as-synthesized hard-templated OMCs (sucrose- and anthracene-derived OMCs, i.e., OMC-S and OMC-A, respectively, formed using the identical hexagonal mesoporous silica template) have...
Graphene has an ultra-high thermal conductivity (TC) along its basin plane. However, the TC of graphene/metal composites is still far below the expectation due primarily to the lack of sufficient graphene alignment in the metal matrix. Herein, we reported an efficient route to prepare the graphene nanoplatelet (GNP)/Cu composites with highly aligned GNPs by a vacuum filtration method followed by spark...
Graphene oxide (GO) is an interesting material that has the potential for a wide range of applications. Critical for these applications are the type of oxygen bond and its spatial distribution on the individual GO sheets. This distribution is not yet well understood. Few techniques offer a resolution high enough to unambiguously identify oxygen configuration. We used a new, label free spectroscopic...
Chemical vapor deposition (CVD) is the most promising, relatively inexpensive approach for the growth of high quality graphene. However, the need to transfer the graphene to dielectric substrates limits its usage in electronic applications. Here, we demonstrate transfer-free growth of graphene on dielectric substrates via mobile hot-wire (MHW) assisted dual heating system (DHS). MHW is utilized as...
Carbon nanoparticles were prepared from glycerol by a thermal process in the presence of H3PO4. These particles were spherical with an average diameter of 66 nm and consisted of a carbon core with carboxylic acid and alcohol functional groups on the surface. The particles were characterized using Fourier-transform infrared, electron microscopy, X-ray diffraction, light scattering, ultraviolet–visible,...
Graphene and graphyne hold great potential for spintronic device applications due to their exceptionally good electrical and mechanical properties in the pristine form. Recently, considering these 2D carbon allotropes have similar bond lengths and unit cell shapes, ensuring a perfectly matched interface between them and construction of graphene/graphyne heterojunctions feasible. To this end, we study...
Here, we demonstrate the controlled synthesis of nanoporous carbon and cobalt oxide (NPCCo3O4) composite from a single precursor source zeolitic imidazolate framework-67, which leads to some new interesting electrochemical properties. The composite shows an outstanding electrochemical performance for measuring the oxidation of glucose in alkaline solution. The differential pulse voltammetric response...
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