CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Cunjun Wang,Yongqiang Chen,Yubo Liu,Baozhong Ma,Chengyan Wang
Recycling cadmium from wastewater not only mitigates environmental risks but also offers economic benefits. However, conventional zinc powder cementation is hindered by excessive zinc consumption and the generation of low-purity cadmium sludge. In this study, we proposed a galvanic cell system composed of a zinc plate coupled with a stainless steel plate, replacing zinc powder as the reductant. Under optimized conditions, the system achieved 99.8 % cadmium removal, with a recovered cadmium purity exceeding 90 %. Mechanistic insights derived from kinetic modeling and electrochemical analysis revealed that cadmium deposition was governed by a mixed control mechanism involving both mass transfer and interfacial reaction. The stainless steel plate provided additional cathodic reduction sites and established a natural potential difference together with the zinc anode. This galvanic interaction promoted active zinc dissolution and facilitated preferential cadmium deposition. Meanwhile, microstructural analysis confirmed the formation of a loose, dendritic cadmium layer, which prevented surface encapsulation and promoted favorable mass transfer conditions for sustained cementation. Compared to traditional zinc powder cementation, this approach eliminates the need for external energy input, reduces zinc consumption, and avoids the generation of hazardous sludge. These findings demonstrate a clean, efficient, and scalable strategy for the removal and recovery of cadmium from wastewater.
研究领域:
环境科学
·
环境工程
·
电化学
·
重金属污染控制
·
资源回收
✓ 已验证
产品关联
DOI
高影响因子
SURFACE ENGINEERING
·
2014
·
IF 1.51
B. Chen,J. Chen,L. Yang,G. Zhao,G. Ding
Using electrodeposition of poly(hydroxyethylmethacrylate)–glycidyl methacrylate–salicylic acid (PHEMA-GMA-SA) in this study, the surface of stainless steel was modified by PHEMA to improve its surface properties of corrosion resistance and hemocompatibility for biomedical applications. Electropolymerisable SA was introduced on PHEMA-GMA by ring opening reaction of the epoxy group of GMA. Poly(hydroxyethylmethacrylate)–glycidyl methacrylate was synthesised by precipitation copolymerisation of HEMA and GMA in ethyl acetate. Ultraviolet spectrum was applied for calculating the degree of substitution of SA in the copolymer. Structure of the electrodeposited layer was verified by Fourier transform infrared. Polarisation curves and electrochemical impedance spectroscopy technologies were used to estimate the corrosion resistance of PHEMA modified stainless steel. The hemocompatibility of PHEMA modified stainless steel was determined by bovine serum albumin adsorption and platelet adhesion.
研究领域:
生物材料学
·
电化学
·
医学工程
✓ 已验证
DOI
高影响因子
Coatings
·
2022
·Vol. 12
·期 12
·1975
·
IF 3.236
Shoumin Sun,Yang Li,Kejing Gao,Li Cheng,Xue Yang,Ruiquan Liao
In the process of petroleum exploitation, in order to effectively inhibit the corrosion damage of acid to metal equipment. Mannich base corrosion inhibitors are generally added to inhibit the corrosion damage of acid. In order to enhance the solubility of Mannich base corrosion inhibitor. This paper intends to introduce hydrophilic groups to enhance the solubility of the Mannich base corrosion inhibitor. In this paper, two efficient corrosion inhibitors 3-(2-hydroxyethylamino)-1-phenylpropan-1-one (MY1) and 3-(2-aminoethylamino)-1-phenylpropan-1-one (MY2), were synthesized based on the Mannich reaction, using formaldehyde, acetophenone and ethanolamine/ethylenediamine as reaction raw materials. The corrosion inhibition performance of the inhibitor on N80 steel in 15% (mass fraction) hydrochloric acid solution was studied by means of the static weight loss method, electrochemical test and optical contact angle analysis. It could be seen from the static weight loss method that the corrosion rate in the hydrochloric acid solution before and after adding 0.7% (mass fraction) corrosion inhibitor concentration decreased from 129.39 g·m−2·h−1to 1.45 g·m−2·h−1and 2.79 g·m−2·h−1, respectively. The corrosion inhibition rate could reach 98%, indicating that both inhibitors had good corrosion inhibition performance, and the corrosion inhibition effect of MY1 was better than that of MY2. It was found from the electrochemical tests that the two inhibitors were mixed corrosion inhibitors mainly inhibiting the anodic reaction, and both inhibitors belonged to spontaneous adsorption, and their adsorption behaviors followed the Langmuir adsorption isotherm. In addition, the surface of N80 steel was characterized by SEM, EDS elemental mapping and contact angle measurement. The results show that a dense hydrophobic film is formed on the surface of the steel sheet after the addition of a corrosion inhibitor, which prevents corrosion.
研究领域:
材料科学
·
腐蚀与防护
·
石油工程
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 34
·25768-25786
·
IF 2.779
Liang Ying,Xu Huimin,Zhang Zhen,Fang Bin
Transition metal cobalt–nickel hydroxides have been widely studied as electrode materials for hybrid supercapacitors (HSCs) due to their unique active component properties. Nevertheless, the influencing factors and optimization of their electrochemical performances are still being studied and discussed. In this paper, Co–Ni layered double hydroxide (LDH) porous structure assembled from nanosheets was formed directly on stainless steel wire mesh (SS) by potentiostatic deposition. The bimetallic synergistic effect and porous structure of Co–Ni LDHs are favorable to their electrochemical performances. The Co 0.5 Ni 0.5 (OH) 2 −SS (nominal composition) electrode has the optimal Co:Ni molar ratio, and its specific capacity values are 474.2 − 320.1 C g −1 at different current densities (1–10 A g −1 ) in 1 M KOH electrolyte. In addition, the concentration of KOH electrolyte also plays an important role on the electrochemical mechanism and performances. Compared with 6 M KOH electrolyte, lower concentration (1 and 3 M) is much more conductive to the microstructural stability and electrochemical behaviors of Co 0.5 Ni 0.5 (OH) 2 −SS electrode. Moreover, the fabricated Co 0.5 Ni 0.5 (OH) 2 −SS//AC−SS HSC device exhibits a good cycling stability, and the maximum energy density is about 10.9 Wh kg −1 at 548.0 W kg −1 .
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 26
·e52428
·
IF 3.057
Zhen Lu,Huarong Liu,Xiaoling Cui,Yue Li,Zhijun Lv,Weijian Chen
In this study, we report a new facile method to prepare fluorine-free superhydrophobic separation films by deposition of micron-sized hydrophobic polyhigh internal phase emulsion (polyHIPE) microspheres on stainless steel meshes. The so-called polyHIPE microspheres are polymer ones with interconnected porous structures, which are prepared by γ-ray radiation polymerization of (W/O HIPE)/W double emulsions stabilized by a single emulsifier 12-acryloyloxy-9-octadecenoic acid using a one-step emulsification in this work. The oil–water separation results show that our self-made hydrophobic meshes have excellent oil–water separation efficiency (about 99.5%), outstanding permeation flux (no less than 187.5 L/[m 2 ·min] and the maximum value of 1850 L/[m 2 ·min]). The oil flux of common organic solvents, water contact angle and water intrusion pressure of these hydrophobic meshes can be readily tuned by changing the size, amount and composition of polyHIPE microspheres. It is worth noting that the superhydrophobic meshes remain excellent separation efficiency and stability after 10 cycles in corrosive environments. More importantly, these superhydrophobic meshes can also efficiently separate surfactant-stabilized water-in-oil emulsions. The polyHIPE microspheres decorated superhydrophobic meshes that can easily realize large-scale production have potentially practical applications in sewage treatment or separation/purification.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
Asia-Pacific Journal of Chemical Engineering
·
2021
·Vol. 16
·期 6
·e2702
·
IF 1.447
Shiyuan Xiong,Xiaole Huang,Wennian Xu,Xiaoping Guo,Shuan Liu
In previous work, the corrosion performance and anti-corrosion mechanism of galvanized steel wire embedded in vegetation-growing concrete under marine environment was highlighted. In this work, a graphene-modified epoxy coating was developed and applied to the protection of galvanized steel in vegetation-growing concrete under a marine environment. The effect of dispersed graphene on the anticorrosion performance of the epoxy coatings was evaluated. The composite coatings displayed outstanding barrier properties against H 2 O molecules compared to the pure epoxy coating. Salt spray test results revealed superior corrosion resistance offered by the prepared graphene-modified epoxy coating on galvanized steel.
研究领域:
材料科学
·
腐蚀与防护
·
土木工程材料
·
复合材料
·
环境耐久性
✓ 已验证
DOI
高影响因子
THIN SOLID FILMS
·
2025
·
IF 2
Houze Zhou,Wencong Deng,Qi Wang,Rui Liang,Danqian Wang
A phosphate-intercalated layered double hydroxide (PO 4 -LDH) coating was fabricated on carbon steel via a facile one-step electrodeposition method for enhanced corrosion protection. The resulting nanoscale coating, incorporating PO₄³⁻ ions and Cu/Al oxides, exhibits improved integrity and compactness. Electrochemical tests in saturated Ca(OH)₂ solution (simulating concrete pore environment) demonstrated that the PO 4 -LDH coating significantly improves corrosion resistance, offering protection two orders of magnitude greater than bare steel. The coating effectively prevents corrosion upon chloride attack and exhibits self-healing capability for artificial scratches in chloride-containing solution. During immersion, the LDH structure reconstructs via dissolution of Al and incorporation of Ca, leading to increased crystallinity. The release of inhibitor ions (PO₄³⁻ and NO₃⁻) during this reconstruction is considered the key mechanism for the observed anticorrosion and self-healing performance.
✓ 已验证
产品关联
DOI
高影响因子
Surface Topography-Metrology and Properties
·
2019
·Vol. 7
·期 2
·024001
·
IF 2.439
Yunfeng Lin,Xu Wang,Xiaoyu Chou
A novel coating system of epoxy matrix containing aniline trimer modified silica conversion layer was prepared on Q235 steel surface. The conversion layer was obtained by electrodeposition on the basis of precursor solution, which contained ethyl silicate and modificatory aniline trimer (MAT). Hydrophobicity, electroactivity and corrosion resistance of as-prepared coating systems were detected. Result showed that the as-prepared MAT-including silica conversion layer (M-SiO2) presented a super-hydrophobicity and excellent electroactivity. Meanwhile, the novel coating system displayed a stronger adhesion force compared with single epoxy coating and silica/epoxy coating system. By electrochemical impedance spectrum and salt spray test, the protective capability of epoxy matrix was largely improved by the coverage of electroactive M-SiO2 conversion layer. This was attributed to the forceful hydrophobicity and self-healing ability of conversion layer. The synergistic effect of above-mention two functions promoted the perfection of corrosion performance for as-prepared novel coating system.
研究领域:
材料科学
·
腐蚀与防护
·
表面工程
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Wei Liu,Wenjing Dong,Likui Guo,Yuan Feng,Naibao Huang,Xiannian Sun
In this paper, a convenient electrodeposition method is proposed to directly fabricate a reduced graphene oxide-amorphous carbon composite coating (rGO-ACC) on a 316L stainless steel substrate. The rGO-ACC coating is achieved through a one-step reduction by utilizing a choline chloride-ethylene glycol deep eutectic solvent (DES) with the dispersion of graphene oxide. The analysis results from SEM, Raman and XPS reveal that the obtained rGO-ACC coating, with layered wrinkle morphology, uniformly covers and covalently bonds to 316L stainless steel substrate. Potentiodynamic and potentiostatic polarization tests showed that the corrosion current densities of rGO-ACC coated 316L stainless steel were of the order of 10 -7 A cm −2 in simulated proton exchange membrane fuel cells (PEMFC) working environment, indicating a significant improvement of corrosion resistance of 316L and an excellent electrochemical stability. Meanwhile, compared with the naked 316L steel, the interfacial contact resistance (ICR) of the coated stainless steel is significantly reduced due to the outstanding electrical conductivity of the coated rGO. The results manifested that deposited rGO-ACC on steel surface may be a highly promising modification method for PEMFC metal bipolar plates.
研究领域:
材料科学
·
电化学
·
能源材料
·
表面工程
·
燃料电池技术
✓ 已验证
DOI
高影响因子
IEEE SENSORS JOURNAL
·
2024
·Vol. 24
·期 13
·21276-21285
·
IF 4.3
Xinghua Shi,Anxue Zhang,Guoqing Han,Yuemeng Yin,Wenchao Chen
Highway bridges are primarily reinforced concrete structures. They have multilayer steel mesh sheets, corrugated pipes, and steel strands inside. As a result, detecting defects in bridge concrete structures requires high technical expertise and can be challenging. This article presents a new device of ground-penetrating radar (GPR) designed specifically for highway bridge inspection. It employs antenna array technology, multichannel radar control technology, and real-time 3-D data acquisition and display technology to achieve reliable detection of various concrete structures commonly found in bridges. Using a 1.3 GHz central frequency antenna array and a multichannel control unit, the system enables simultaneous surveying along five lines, the detection depth can exceed 600 mm in concrete. This significantly enhances detection efficiency. By employing specialized software processing, the detection results are presented in a specific and visually comprehensive 3-D format. Moreover, the system provides 3-D slice images from any position and direction, facilitating the interpretation of detection results for various targets, including reinforcement layout, protective layer thickness, corrugated pipes, steel strands, and other quality defects. It provides advanced and reliable technical means for construction quality control and bridge health monitoring of highway bridges. The results indicate that the device performs well not only in controlled experimental environments, but also in real-world bridge structure environments.
研究领域:
土木工程
·
结构健康监测
·
无损检测
·
交通基础设施
✓ 已验证
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2017
·
IF 5.951
Jia Ding,Pengjing Chen,Songyu Fan,Zhiqiang Zhang,Lupeng Han,Guofeng Zhao,Ye Liu,Yong Lu
Free-standing stainless-steel (SS)-fiber@meso-HZSM-5 core–shell catalysts engineered from micro- to macro-scale were highly efficiently synthesized via cost-effective steam-assisted crystallization (SAC) method. Impact of synthesis conditions on their morphology and textural/acidic properties was investigated by means of XRD, SEM, TEM, solid-state NMR, NH3-TPD, Py-IR and N2 physisorption. Single-run lifetime of such structured catalysts for MTP process was strongly dependent on their preparation conditions but slightly the product distribution. A volcano-like relationship for lifetime was observed against the SAC time, which was correlated well with the crystallization-time-dependent crystallinity, mesoporosity and crystal size. The promising SS-fiber@meso-HZSM-5 was the one obtained after the SAC for 12 h, which delivered a prolonged single-run lifetime of 620 h with a high propylene selectivity of ∼42% at 450 °C using a methanol weight hourly space velocity (WHSV) of 1 h–1, as the result of high crystallinity, well-developed mesoporosity and small crystal size. Note that well-developed mesoporosity was paramount for the catalyst stability improvement, because of enhanced accommodation capacity of zeolite shell for receiving formed coke.
研究领域:
化学工程
·
催化材料
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2017
·
IF 4.208
Huajun Feng,Chenyi Tang,Qing Wang,Yuxiang Liang,Dongsheng Shen,Kun Guo,Qiaoqiao He,Thilini Jayaprada,Yuyang Zhou,Ting Chen,Xianbin Ying,Meizhen Wang
This study reports a high-performance 3D stainless-steel photoanode (3D SS photoanode) for bioelectrochemical systems (BESs). The 3D SS photoanode consists of 3D carbon-coated SS felt bioactive side and a flat α-Fe 2 O 3 -coated SS plate photoactive side. Without light illumination, the electrode reached a current density of 26.2 ± 1.9 A m −2 , which was already one of the highest current densities reported thus far. Under illumination, the current density of the electrode was further increased to 46.5 ± 2.9 A m −2 . The mechanism of the photo-enhanced current production can be attributed to the reduced charge-transfer resistance between electrode surface and the biofilm with illumination. It was also found that long-term light illumination can enhance the biofilm formation on the 3D SS photoanode. These findings demonstrate that using the synergistic effect of photocatalysis and microbial electrocatalysis is an efficient way to boost the current production of the existing high-performance 3D anodes for BESs.
研究领域:
环境科学
·
生物技术
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）