title: Synthesis of carbon nanotubes and porous carbons from printed circuit board waste pyrolysis oil.
abstract: The possibility and feasibility of using pyrolysis oil from printed circuit board (PCB) waste as a precursor for advanced carbonaceous materials is presented. The PCB waste was first pyrolyzed in a laboratory scale fixed bed reactor at 600 degrees C to prepare pyrolysis oil. The analysis of pyrolysis oil by gas chromatography-mass spectroscopy indicated that it contained a very high proportion of phenol and phenol derivatives. It was then polymerized in formaldehyde solution to synthesize pyrolysis oil-based resin which was used as a precursor to prepare carbon nanotubes (CNTs) and porous carbons. Scanning electron microscopy and transmission microscopy investigation showed that the resulting CNTs had hollow cores with outer diameter of approximately 338 nm and wall thickness of approximately 86 nm and most of them were filled with metal nanoparticles or nanorods. X-ray diffraction reveals that CNTs have an amorphous structure. Nitrogen adsorption isotherm analysis indicated the prepared porous carbons had a Brunauer-Emmett-Teller surface area of 1214 m(2)/g. The mechanism of the formation of the CNTs and porous carbons was discussed.
authors.affiliation: Key Laboratory of Industrial Ecology and Environmental Engineering (MOE), School of Environmental Science and Technology, Dalian University of Technology, Linggong Road 2, Dalian 116024, PR China.
authors.forename: Cui
authors.initials: C
authors.lastname: Quan
authors.forename: Aimin
authors.initials: A
authors.lastname: Li
authors.forename: Ningbo
authors.initials: N
authors.lastname: Gao
mesh_terms: D002244:Carbon / Q000737:chemistry*; D003188:Composite Resins; D005240:Feasibility Studies; D008401:Gas Chromatography-Mass Spectrometry; D007219:Industrial Oils / Q000032:analysis*; D007220:Industrial Waste / Q000032:analysis*; D008838:Microcomputers; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D037742:Nanotubes, Carbon / Q000737:chemistry*; D009584:Nitrogen / Q000737:chemistry; D013816:Thermodynamics; D013818:Thermogravimetry; D014961:X-Ray Diffraction
chemical_list: D003188:Composite Resins; D007220:Industrial Waste; D037742:Nanotubes, Carbon; D002244:Carbon; D009584:Nitrogen