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Synthesis and characterization of nanocarbon from waste batteries via an eco-friendly method

WASTE DISPOSAL & SUSTAINABLE ENERGY 2024年第2期6卷 197-208页

作者： Uoda, Maraim Kh. Hussein, Hussein Q. Jalil, Rana R. Univ Baghdad Coll Engn Chem Engn Dept Baghdad Iraq Thi Qar Oil Co Nassriya Iraq Petr Res & Dev Ctr Baghdad Iraq

The widespread use of disposable batteries to power common electronic devices is a major source of e-waste. There are growing environmental and health concerns due to the expansion of e-waste around the world. Hence, developing a reliable system for recycling old batteries has reached the top of the recycling priority list. The current study presents a novel approach to synthesis carbon nanoparticles (CNPs) from spent batteries via an eco-friendly method that offers economical, environment-friendly, and nontoxic approaches in comparison to conventional chemical methods. The synthesized nanoparticles were characterized by field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray (EDX), powder X-ray diffractometry (XRD), UV-VIS absorption analysis (UV), Fourier transform infrared spectroscopy (FT-IR), Atomic force microscope (AFM), and thermo-gravimetric analysis (TGA). The average diameter of the synthesized particles was 40.16 nm, and the particles tended to be aspherical in shape. EDX analysis also predicted the presence of pure carbon, with some contamination arrived at 15% (in weight). This is a novel study in which nanocarbons were synthesized in a brine (7600x10(-6)) from a target (CNPs>75 nm), which paves the way for future use of CNPs derived from spent batteries and helps the environment by decreasing the amount of electronic waste dumped in landfills.

关键词： Novel Zn-C battery Carbon nanoparticles Characterization Eco-friendly methods laser-ablation CARBON NANOCOMPOSITES

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Elemental analysis of copper alloy by high repetition rate LA-SIBS using compact fiber spectrometer

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Plasma Science and Technology 2019年第3期21卷 40-45页

作者： Xiaoyong HE Runhua LI Fujuan WANG School of Physics and Optoelectronics South China University of Technology State Key Laboratory of Optoelectronic Materials and Technology Sun Yat-sen University

High repetition rate laser-ablation spark-induced breakdown spectroscopy(HRR LA-SIBS) was first used to analyze trace elements in copper alloy samples. The 1064 nm output of an acoustooptically Q-switched Nd:YAG laser operated at a pulse repetition rate of 1 kHz was utilized to ablate copper alloy and to form original plasma, spark-discharge was applied to further breakdown the ablated samples and enhance the emission of the laser-induced plasma. A compact multichannel fiber spectrometer was used to analyze the plasma emission under nongated operation mode. Under the assistance of high repetition rate spark discharge, the plasma emission was able to be improved significantly. The determined limits of the detection of lead and aluminum were 15.5 ppm and 1.9 ppm by HRR LA-SIBS, respectively, which were 11 and 6 folds better than that determined by HRR LIBS under the same laser-ablation condition. This work demonstrates the feasibility of using fiber spectrometer to analyze plasma emission under non-gated operation mode and the possibility of building a portable HRR LA-SIBS system for rapid elemental analysis of copper alloys and other solid samples.

关键词： high repetition rate laser-ablation spark-induced breakdown spectroscopy copper alloy rapid analysis

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Propagation of Plasma Generated by Intense Pulsed Ion Beam Irradiation

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Chinese Physics Letters 2006年第8期23卷 2255-2258页

作者：吴迪宫野刘金远王晓钢刘悦马腾才 State Key Laboratory of Materials Moditlcation by laser Ion and Electron Beams Dalian University of Technology Dalian 116024

Taking the calculation results based on the established two-dimensional ablation model of the intense-pulsed-ionbeam （IPIB） irradiation process as initial conditions, we build a two-dimensional hydrodynamic ejection model of plasma produced by an IPIB-irradiated metal titanium target into ambient gas. We obtain the conclusions that shock waves generate when the background pressure is around 133 mTorr and also obtain the plume splitting phenomenon that has been observed in the experiments.

关键词： laser-ablation FOCUS DIODE EVAPORATION

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Magic Number Behaviour and Structures of Silicon Dioxide-Based Clusters

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Chinese Physics Letters 2006年第2期23卷 428-431页

作者：邵和助李郁芬庄军 Department of Optical Science and Engineering State Key Joint Laboratory for Materials Modification by Laser Ion and Electron Beams Fudan University Shanghai 200433

The lowest energy structures of （SiO2）nO2 duster skeletons with size from n = 2 to 12 is investigated theoretically by genetic algorithm. The calculations based on the Tsuneyuki-Tsukada Aoki Matsui （TTAM） and Flikkema- Bromley （FB） potentials give the same result： n = 4 and n = 8 are the magic numbers in the virtual （SiO2）nO2 cluster sequence. This conclusion is in agreement with the experimental observation on the [（SiO2）nO2H3]- cluster sequence. The comparison of the present results with those from the density-functional-theory calculations on （SiO2）nO2H4 shows that addition of II atoms to the O terminals of （SiO2）nO2 clusters to form the complex （SiO2）nO2H4 clusters has only minor influence on the relative energies and the structures of different isomers. This means that the magic behaviour of the dusters [（SiO2）nO2H3]^- （n=4,8） observed in our previous experiment is originated from the stability of the cluster skeletons （SiO2）nO2 （n = 4, 8） .

关键词： laser-ablation DENSITY NANOWIRES DYNAMICS

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