Antimony

About: Antimony is a research topic. Over the lifetime, 11450 publications have been published within this topic receiving 155660 citations. The topic is also known as: Sb & element 51.

Laser surface annealing of antimony doped amorphized semiconductor region

Abstract: A sheet resistance stabilized recrystallized antimony doped region may be formed within a semiconductor substrate by annealing a corresponding antimony doped amorphized region at a temperature from about 1050° C. to about 1400° C. for a time period from about 0.1 to about 10 milliseconds. Preferably, a laser surface treatment is used. The laser surface treatment preferably uses a solid phase epitaxy. In addition, the antimony doped region may be co-doped with at least one of a phosphorus dopant and an arsenic dopant. The antimony dopant and the laser surface treatment lend sheet resistance stability that is otherwise absent when forming solely phosphorus and/or arsenic doped regions.

Enhancing the Anode Performance of Antimony through Nitrogen-Doped Carbon and Carbon Nanotubes

Abstract: Antimony is a promising high-capacity anode material in sodium-ion batteries, but it generally shows poor cycling stability because of its large volume changes during sodium ion insertion and extraction processes. To alleviate or even overcome this problem, we develop a hybrid carbon encapsulation strategy to improve the anode performance of antimony through the combination of antimony/nitrogen-doped carbon (Sb/N-carbon) hybrid nanostructures and the carbon nanotube (CNT) network. When evaluated as an anode material for sodium-ion batteries, the as-synthesized Sb/N-carbon + CNT composite exhibits superior cycling stability and rate performance in comparison with Sb/N-carbon or Sb/CNT composite. A high charge capacity of 543 mA h g–1 with initial charge capacity retention of 87.7% is achieved after 200 cycles at a current density of 0.1 A g–1. Even under 10 A g–1, a reversible capacity of 258 mA h g–1 can be retained. The excellent sodium storage properties can be attributed to the formation of Sb–N bondin...

Speciation Analysis of Antimony (III) and Antimony (V) by Flame Atomic Absorption Spectrometry After Separation/Preconcentration With Cloud Point Extraction

Abstract: A sensitive and simple method for flame atomic absorption spectrometry (FAAS) determination of antimony species after separation/preconcentration by cloud point extraction (CPE) has been developed. When the system temperature is higher than the cloud point extraction temperature, the complex of antimony (III) with N-benzoyl-N-phenyhydroxylamine (BPHA) can enter the surfactant-rich phase, whereas the antimony (V) remains in the aqueous phase. Antimony (III) in surfactant-rich phase was analyzed by FAAS and antimony (V) was calculated by subtracting of antimony (III) from the total antimony after reducing antimony (V) to antimony (III) by L-cysteine. The main factors affecting the cloud point extraction, such as pH, concentration of BPHA and Triton X-114, equilibration temperature and time, were investigated systematically. Under optimized conditions, the detection limits (3σ) were 1.82 ng mL−1 for Sb(III) and 2.08 ng mL−1 for Sb(total), and the relative standard deviations (RSDs) were 2.6% for Sb(III) and 2.2% for Sb(total). The proposed method was applied to the speciation of antimony species in artificial seawater and wastewater, and recoveries in the range of 95.3–106% were obtained by spiking real samples. This technique was validated by means of reference water materials and gave good agreement with certified values.