跳轉至內容
Merck
  • Gas-Sensing Devices Based on Zn-Doped NiO Two-Dimensional Grainy Films with Fast Response and Recovery for Ammonia Molecule Detection.

Gas-Sensing Devices Based on Zn-Doped NiO Two-Dimensional Grainy Films with Fast Response and Recovery for Ammonia Molecule Detection.

Nanoscale research letters (2015-12-03)
Jian Wang, Xiaowei Wei, Peihua Wangyang
摘要

Zn-doped NiO two-dimensional grainy films on glass substrates are shown to be an ammonia-sensing material with excellent comprehensive performance, which could real-time detect and monitor ammonia (NH3) in the surrounding environment. The morphology and structure analysis indicated that the as-fabricated semiconductor films were composed of particles with diameters ranging from 80 to 160 nm, and each particle was composed of small crystalline grain with a narrow size about 20 nm, which was the face-centered cubic single crystal structure. X-ray diffraction peaks shifted toward lower angle, and the size of the lattice increased compared with undoped NiO, which demonstrated that zinc ions have been successfully doped into the NiO host structure. Simultaneously, we systematically investigated the gas-sensing properties of the Zn-doped NiO sensors for NH3 detection at room temperature. The sensor based on doped NiO sensing films gave four to nine times faster response and four to six times faster recovery speeds than those of sensor with undoped NiO films, which is important for the NiO sensor practical applications. Moreover, we found that the doped NiO sensors owned outstanding selectivity toward ammonia.

材料
產品編號
品牌
產品描述

Sigma-Aldrich
氢氧化钠, ACS reagent, ≥97.0%, pellets
Sigma-Aldrich
氢氧化钠, reagent grade, ≥98%, pellets (anhydrous)
Sigma-Aldrich
氢氧化钠 溶液, 50% in H2O
Sigma-Aldrich
氢氧化钠 溶液, BioUltra, for molecular biology, 10 M in H2O
Sigma-Aldrich
氢氧化钠, BioXtra, ≥98% (acidimetric), pellets (anhydrous)
Sigma-Aldrich
氢氧化钠, puriss., meets analytical specification of Ph. Eur., BP, NF, E524, 98-100.5%, pellets
Sigma-Aldrich
氢氧化钠 溶液, 1.0 N, BioReagent, suitable for cell culture
Sigma-Aldrich
氢氧化钠, reagent grade, 97%, powder
Sigma-Aldrich
氢氧化钠, pellets, semiconductor grade, 99.99% trace metals basis
Sigma-Aldrich
氢氧化钠, puriss. p.a., ACS reagent, reag. Ph. Eur., K ≤0.02%, ≥98%, pellets
Sigma-Aldrich
氯化镍(II) 六水合物, ReagentPlus®
Sigma-Aldrich
氢氧化钠 溶液, 5.0 M
Sigma-Aldrich
氢氧化钠, puriss. p.a., ACS reagent, K ≤0.02%, ≥98.0% (T), pellets
Sigma-Aldrich
氯化镍(II) 六水合物, 99.9% trace metals basis
Sigma-Aldrich
氢氧化钠, beads, 16-60 mesh, reagent grade, 97%
Sigma-Aldrich
水合肼 溶液, puriss. p.a., 24-26% in H2O (RT)
Sigma-Aldrich
氢氧化钠, reagent grade, 97%, flakes
Sigma-Aldrich
氯化镍(II) 六水合物, puriss. p.a., ≥98%
Sigma-Aldrich
氢氧化钠, BioUltra, for luminescence, ≥98.0% (T), pellets
Sigma-Aldrich
氯化镍(II) 六水合物, BioReagent, suitable for cell culture
Sigma-Aldrich
氢氧化钠, ultra dry, powder or crystals, 99.99% trace metals basis
Sigma-Aldrich
氢氧化钠 溶液, purum, ≥32%
Sigma-Aldrich
肼 一水合物, N2H4 64-65 %, reagent grade, ≥97%
Sigma-Aldrich
肼 水合物, reagent grade, N2H4 50-60 %
Sigma-Aldrich
氯化镍(II) 六水合物, 99.999% trace metals basis
Sigma-Aldrich
氢氧化钠-16O 溶液, 20 wt. % in H216O, 99.9 atom % 16O
Sigma-Aldrich
3-乙基-2,4-戊二酮,互变异构体的混合物, 98%
Sigma-Aldrich
氢氧化钠, anhydrous, free-flowing, Redi-Dri, reagent grade, ≥98%, pellets