JOURNAL OF ELECTROANALYTICAL CHEMISTRY
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2022
·
IF 4.598
Qing Cheng,Yanzhuo Lv,Deyu Li,Ning Li,Qiao Ding,Yinghai Zhao,Qi Zhao
The Sn-Fe alloy coating is a potential choice for decorative coatings and electronic products because of its excellent performance. However, oxidation of the bath is likely to occur in the process of use, which limits the production of electrodeposition of Sn-Fe alloy. Resveratrol has excellent antioxidant capacity and is considered as a non-polluting natural antioxidant. However, the understanding of using of resveratrol as stabilizer for electroplating solution in the field of electrodeposition is limited. In this study, resveratrol, hydroquinone and TBHQ are selected as the stabilizers of the electroplating bath to conduct comparative experiments for measuring the stability effect of resveratrol. The antioxidant capacities of three stabilizers are compared by means of the natural oxidation experiment, H 2 O 2 accelerated oxidation experiment and electrochemical testing. The natural oxidation experiment and H 2 O 2 accelerated oxidation experiment confirm that the antioxidant effect of resveratrol is higher than hydroquinone and TBHQ. To determine the optimal concentration of resveratrol in the electroplating solution, EIS and salt spray test were conducted. These results show that appropriate resveratrol can improve the corrosion resistance of the coating, but excessive resveratrol is detrimental to corrosion resistance. Therefore, the optimal concentration of resveratrol in the electroplating solution is 1.0 g/L.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Kai Yan,Peisen Huang,Mingzhu Xia,Xingen Xie,Lin Sun,Wu Lei,Fengyun Wang
With the continuous promotion and application of electroless nickel plating technology, the environmental pollution caused by heavy metals nickel and phosphorus in the spent bath becomes more serious. It is challenging to develop a method for the treatment of a spent electroless nickel plating bath with the high-efficiency recovery of Ni 2+ and synchronous removal of HPO 3 2- , no secondary pollution, and low energy consumption. Herein, a means that absolutely incorporates the ascendancy of two single treatment methods, called a combination of electrodialysis and electrodeposition , was used to treat the spent electroless nickel plating bath. The effects of current density, operation time, pH value of the spent bath, dilution multiple, flow rate, and electrolyte (Na 2 SO 4 ) concentration on the recovery, removal rate, and energy consumption were investigated. Then, the reusability of the ion-exchange membrane was studied. The experimental results indicated that the recovery of Ni 2+ was 82.34%, the removal of HPO 3 2- was 51.61%, the energy consumption of this method was only 18.28 Wh/kg, and the stability of the anion exchange membrane was desirable. Overall, the study of this combined process provides a basis for the one-step treatment of spent electroless nickel plating bath by a comprehensive method and an idea for engineering the application of handling spent bath.
研究领域:
环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL PHYSICS LETTERS
·
2023
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IF 2.8
Huijuan Shi,Yunzhi Tang,Yuhui Tan,Zhen Sun
Due to the decomposition, condensation, and invalidation of organic additives in acid copper plating solution, it is hard to identify the effective concentration of additives, which causes difficulties in the prediction and grasping of the electroplating effect. To solve this problem, this paper established the linear relationship between absorbency and the concentration of organic additives based on the principle of ultraviolet spectrophotometry and the luminescence mechanism of the chromogenic agent and three organic additives after eliminating the interference of copper and hydrogen ions in the plating solution. The concentrations of polyethylene glycol (PEG), bis-(sodium sulfopropyl)-disulfide(SPS), and gelatin in the solution were analyzed quantitatively according to Law of Lambert-Beer. According to the results, the linear relationship between PEG’s mass concentration and absorbency can be described as y = 0.01057 + 0.01372x, with a linear correlation of 0.9982, a relative error of about 0.56%-3.7%, and a minimum detection limit of 1 mg/L. The method adopted for detecting the SPS content records a relative error of around 0.817%-4.202% with the minimum detection limit of 2 μmol/L. The linear relationship between gelatin concentration and absorbancy is expressed as y = 0.02165x + 0.00932, in which the linear correlation r = 0.9906.
研究领域:
化学工程
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分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
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2016
·Vol. 16
·期 12
·12635-12639
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IF 1.338
Du Jingjing,Xie Shaowen,Li Na,Xu Jianxiong,Xu Lijian
Hierarchical nanoporous Al–SiO2 particles were prepared in this study by dissolving template method. The hierarchical nanoporous Al–SiO2 particles with hollow structure were analyzed by transmission electron microscope (TEM), energy dispersive spectrometer
(EDS), scanning electron microscope (SEM), nitrogen adsorption stripping curves and Barrett-Joyner-Halenda (BJH) pore size distribution curves. Hierarchical nanoporous Al–SiO2/Ni–Mo composite electrodes were prepared by composite deposition of hierarchical nanoporous
Al–SiO2 particles onto electroplating bath of Ni–Mo. Results showed that the specific surface area for the hierarchical nanoporous Al–SiO2 sample was 396 m2/g, with pore volume being 1.37 cm3/g and mesoporous pore size being 3.3
nm. The hydrogen evolution electrocatalytic activities for the composite electrodes reached the optimal value when the concentration of the hierarchical nanoporous Al–SiO2 in the electroplating bath was 2 g/L, indicating that their “foam” structure did not only
enhance the electrode surface area but also effectively improved the electrocatalytic properties of aluminum and showed that the electrocatalytic hydrogen evolution by the hierarchical nanoporous Al–SiO2/Ni–Mo composite electrodes had more advantages than that of the
Ni–Mo electrodes alone.
研究领域:
材料科学
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电化学
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纳米技术
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催化
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）