Selective bilirubin sensor fabrication based on doped IAO nanorods for environmental remediation

2019 ◽  
Vol 43 (48) ◽  
pp. 19298-19307 ◽  
Author(s):  
Mohammed M. Rahman ◽  
Jahir Ahmed ◽  
Abdullah M. Asiri
Keyword(s):  
Electrochemical Reduction ◽  
Environmental Remediation ◽  
Reduction Method ◽  
Hydrothermal Technique ◽  
Enzymatic Sensor ◽  
Sensor Fabrication ◽  
Low Dimensional

In this approach, low-dimensional facile IAO nanorods were prepared by using the hydrothermal technique, which is efficiently applied to develop a non-enzymatic sensor coated with GCE probe by electrochemical reduction method.

Inductive Effect as a Universal Concept to Design Efficient Catalysts for CO2 Electrochemical Reduction: Electronegativity Difference Makes Difference

2021 ◽  
Author(s):  
Huihuang Chen ◽  
Weng Fu ◽  
Zhigang Geng ◽  
Jie Zeng ◽  
Bo Yang
Keyword(s):  
Electrochemical Reduction ◽  
Energy Supply ◽  
Environmental Remediation ◽  
High Performance ◽  
Inductive Effect ◽  
Great Promise ◽  
Electronegativity Difference

CO2 electrochemical reduction (CO2ER) into valuable chemical feedstocks holds great promise for energy supply and environmental remediation but remains a challenge due to the lack of high-performance electrocatalysts. Inductive effect,...

scholarly journals Enhancement of Capacitive Performance in Titania Nanotubes Modified by an Electrochemical Reduction Method

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Nurul Asma Samsudin ◽  
Zulkarnain Zainal ◽  
Hong Ngee Lim ◽  
Yusran Sulaiman ◽  
Sook-Keng Chang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Electrochemical Reduction ◽  
Photoelectron Spectroscopy ◽  
Oxygen Vacancies ◽  
Reduction Method ◽  
Titania Nanotubes ◽  
Electrochemical Anodization ◽  
Constant Current ◽  
Cyclic Voltammogram ◽  
Capacitive Performance

Highly ordered titania nanotubes (TNTs) were synthesised by an electrochemical anodization method for supercapacitor applications. However, the capacitive performance of the TNTs was relatively low and comparable to the conventional capacitor. Therefore, in order to improve the capacitive performance of the TNTs, a fast and facile electrochemical reduction method was applied to modify the TNTs (R-TNTs) by introducing oxygen vacancies into the lattice. X-ray photoelectron spectroscopy (XPS) data confirmed the presence of oxygen vacancies in the R-TNTs lattice upon the reduction of Ti4+ to Ti3+. Electrochemical reduction parameters such as applied voltage and reduction time were varied to optimize the best conditions for the modification process. The electrochemical performance of the samples was analyzed in a three-electrode configuration cell. The cyclic voltammogram recorded at 200 mV s−1 showed a perfect square-shaped voltammogram indicating the excellent electrochemical performance of R-TNTs prepared at 5 V for 30 s. The total area of the R-TNTs voltammogram was 3 times larger than the unmodified TNTs. A specific capacitance of 11.12 mF cm−2 at a current density of 20 μA cm−2 was obtained from constant current charge-discharge measurements, which was approximately 57 times higher than that of unmodified TNTs. R-TNTs also displayed outstanding cycle stability with 99% capacity retention after 1000 cycles.

scholarly journals Lignin Biopolymer for the Synthesis of Iron Nanoparticles and the Composite Applied for the Removal of Methylene Blue

Polymers ◽  
2021 ◽  
Vol 13 (21) ◽  
pp. 3847
Author(s):  
Fang-Yi Peng ◽  
Pei-Wen Wang ◽  
Weisheng Liao ◽  
Ing-Song Yu
Keyword(s):  
Methylene Blue ◽  
Aqueous Solutions ◽  
Environmental Remediation ◽  
Present Method ◽  
Room Temperature ◽  
Iron Nanoparticles ◽  
Reduction Method ◽  
Environmental Pollutants ◽  
Borohydride Reduction ◽  
Natural Polymer

In the current study, lignin, an abundant natural polymer, was dissolved in ethylene glycol and acidic H2O to form nanoscale lignin. Then, zero-valent iron (ZVI) nanoparticles were synthesized in nanoscale lignin, producing a nZVI/n-lignin composite, via the borohydride reduction method. The use of nZVI/n-lignin for environmental remediation was tested by the removal of methylene blue in aqueous solutions at room temperature. The nZVI/n-lignin composite achieved a higher methylene blue removal ratio than that achieved by traditional nZVIs. Moreover, its excellent dispersibility in water and stability against oxidation in the air were observed. The functions of the nanoscale lignin in the composite material are (1) prevention of further growth and aggregation of the nZVI nanoparticles, (2) protection of nZVI from serious oxidation by H2O/O2, and (3) allowing better dispersibility of nZVI in aqueous solutions. These three functions are important for the field applications of nZVI/n-lignin, namely, to travel long distances before making contact with environmental pollutants. The present method for producing nZVI/n-lignin is straightforward, and the combination of nZVI and lignin is an efficient and environmentally friendly material for environmental applications.

Nanosized Synthesis of Nickel Oxide by Electrochemical Reduction Method and their Antifungal Screening

2017 ◽  
Vol 28 (4) ◽  
pp. 2097-2109 ◽  
Author(s):  
Ashwini A. Agale ◽  
Suresh T. Gaikwad ◽  
Anjali S. Rajbhoj
Keyword(s):  
Nickel Oxide ◽  
Electrochemical Reduction ◽  
Reduction Method

scholarly journals Environmental Remediation Applications of Carbon Nanotubes and Graphene Oxide: Adsorption and Catalysis

Nanomaterials ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 439 ◽  
Author(s):  
Yanqing Wang ◽  
Can Pan ◽  
Wei Chu ◽  
Adavan Vipin ◽  
Ling Sun
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Environmental Remediation ◽  
Carbon Nanomaterials ◽  
Social Sustainability ◽  
Environmental Issues ◽  
The Social ◽  
Low Dimensional

Environmental issues such as the wastewater have influenced each aspect of our lives. Coupling the existing remediation solutions with exploring new functional carbon nanomaterials (e.g., carbon nanotubes, graphene oxide, graphene) by various perspectives shall open up a new venue to understand the environmental issues, phenomenon and find out the ways to get along with the nature. This review makes an attempt to provide an overview of potential environmental remediation solutions to the diverse challenges happening by using low-dimensional carbon nanomaterials and their composites as adsorbents, catalysts or catalysts support towards for the social sustainability.

scholarly journals Research on dimension reduction method for hyperspectral remote sensing image based on global mixture coordination factor analysis

2015 ◽  
Vol XL-7/W4 ◽  
pp. 159-167 ◽  
Author(s):  
S. Wang ◽  
C. Wang
Keyword(s):  
Remote Sensing ◽  
Factor Analysis ◽  
Reduction Method ◽  
Hyperspectral Image ◽  
Image Data ◽  
Remote Sensing Image ◽  
Hyperspectral Remote Sensing ◽  
Hyperspectral Image Data ◽  
Low Dimensional ◽  
Hyperspectral Remote Sensing Image

Over the past thirty years, the hyperspectral remote sensing technology is attracted more and more attentions by the researchers. The dimension reduction technology for hyperspectral remote sensing image data is one of the hotspots in current research of hyperspectral remote sensing. In order to solve the problems of nonlinearity, the high dimensions and the redundancy of the bands that exist in the hyperspectral data, this paper proposes a dimension reduction method for hyperspectral remote sensing image data based on the global mixture coordination factor analysis. In the first place, a linear low dimensional manifold is obtained from the nonlinear and high dimensional hyperspectral image data by mixture factor analysis method. In the second place, the parameters of linear low dimensional manifold are estimated by the EM algorithm of find a local maximum of the data log-likelihood. In the third place, the manifold is aligned to a global parameterization by the global coordinated factor analysis model and then the lowdimension image data of hyperspectral image data is obtained at last. Through the comparison of different dimensionality reduction method and different classification method for the low-dimensional data, the result illuminates the proposed method can retain maximum spectral information in hyperspectral image data and can eliminate the redundant among bands.

Mechanism on BiVO4 photoanode photoelectrochemical performance improving: Based on surface electrochemical reduction method

2021 ◽  
Vol 366 ◽  
pp. 137288
Author(s):  
Yaping Zhang ◽  
Yuyu Bu ◽  
Fengqiu Jiang ◽  
Huan Li ◽  
Xi Chen ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Reduction Method ◽  
Photoelectrochemical Performance
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