Materials Today Communications
·
2024
·
IF 3.7
Haitao Yin,Can Wei,Yuwei Ye,Zhixiang Wang,Shengguo Zhou
Carbon dots have significantly contributed to corrosion resistance due to their varied physical and chemical properties, excellent biocompatibility, and high surface activity. Therefore, designing and developing high-performance carbon dot inhibitors is of great significance. The study successfully synthesized lanthanum and nitrogen co-modified carbon dots (La/N-CDs), which function as a green and effective corrosion inhibitor. It was found that the La/N-CDs inhibitor presented a nanostructure with size of 3–9 nm. Electrochemical experiments, such as Tafel plots and EIS, showed that the presence of La/N-CDs effectively suppressed metal corrosion in a chloride-containing corrosion solution. In a 3 wt% NaCl solution, 400 mg/L La 15 % /N-CDs exhibited the best corrosion inhibition performance, with an impedance modulus of 2165.33 Ω cm² and an inhibition efficiency reaching as high as 93.07 %, while the surface roughness of the steel and the corrosion rate was also minimized. This might be explained by the formation of an adsorption layer by La/N-CDs on the metal surface, a phenomenon confirmed by Langmuir isotherm and XPS investigations. These findings confirmed that La/N-CDs could form a protective film on the metal surface, significantly improving its corrosion resistance and extending its service life in corrosion environment. The study’s findings offered insights and a conceptual structure for enhancing corrosion inhibitors using carbon dots that were augmented with rare earth elements.
研究领域:
材料科学
·
电化学
·
防腐蚀工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Weihao Fan,Huaiyuan Wang,Chijia Wang,Zhanjian Liu,Kaka Li,Yanji Zhu
CeO 2 was used as the only oxidant for aniline polymerization, and polyaniline (PANI) was grown on CeO 2 surface to form CeO 2 @PANI nanocomposites. SEM and TEM showed that the CeO 2 @PANI composites were nanorods in a core-shell structure. XPS indicated that CeO 2 -core was reduced by aniline into Ce 3+ , which was then captured by the PANI-shell. Then the passive ability of CeO 2 @PANI coating on steels was explored. EIS showed that the impedance modulus of the CeO 2 @PANI coating exceeded 10 8 Ω·cm 2 after accelerated immersion. The SVET and XPS confirmed that PANI polarized the anodic reaction, Ce 3+ suppressed the cathodic reaction, and PO 4 3− formed complex precipitation. Some high-valent metal oxides can directly oxidize the aniline polymerization to form MO@PANI hybrid particles. The cations obtained by the metal oxide reduction can be captured by PANI and participate in passivation together with dopants. This study provides a new kind of nanocomposite fillers that can effectively passivate steel substrates within epoxy coatings for long-time protection.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2025
·
IF 8.9
Ziyang Zhou,Zhengquan Wang,Ranming Niu,Siyu Huang,Julie M. Cairney,Xueling Fan,Eason Yi-Sheng Chen
Rust conversion and composite coatings offer effective solutions for enhancing corrosion resistance in structural materials used in marine environments. They are both cost-effective and easy to implement. In this study, we introduce a novel coating that combines tannic acid-based iron-rust conversion with graphene-based nanocomposites, resulting in improved corrosion resistance for epoxy coatings on steel surfaces. We employed a variety of characterization techniques to assess the superior anti-corrosion and structural properties of these new coatings, including X-ray diffraction spectroscopy, Fourier-transform infrared spectroscopy, X-ray photoelectron spectroscopy, scanning electron microscopy with focused ion beam and energy dispersion X-ray spectrometer, transmission electron microscopy, electrochemical impedance spectroscopy, as well as mechanical testing. The development of the new materials holds promise for environmental benefits and widespread industrial applications of nanocomposites in the field of rust conversion coatings.
研究领域:
材料科学
·
海洋工程
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2024
·
IF 8.4
Xiaoqian Liu,Jiaying Ma,Enchao Li,Jiandong Zhu,Huaqiang Chu,Xuefei Zhou,Yalei Zhang
Zero liquid discharge (ZLD) strategy provides significant potential for industrial brine treatment. Still, the application has been constrained by the inadequate water recovery and membrane fouling of its membrane-based brine concentration system. Herein, a pilot-scale system was established that integrated pretreatment, reverse osmosis (RO), nanofiltration (NF), and disk tube reverse osmosis (DTRO), and demonstrated over a 6-month operation for the first application in treating steel industry brine. Meanwhile, novel insights were offered into the spatial evolution of DTRO membrane fouling. The overall ZLD system reached ultra-efficient water recovery at 91% with relatively low energy consumption (7.27 kWh/m 3 ). The RO and NF units concentrated the brine and selectively separated ions of different valences, simultaneously eliminating various contaminants. The DTRO unit enriched the highly saline NF permeate with a remarkable 7.5-fold concentration effect, producing an extremely hypersaline brine salinity (138,472 ± 34,804 mg/L, Cl − /SO 4 2− mass ratio of 56) that ultimately yielded ultra-pure NaCl salt. Additionally, DTRO special fouling patterns revealed a distinctive "W"-shaped fluctuation in humic acid along the device water flow, with concurrent reduction in iron/aluminum oxides leading to their deposition at the outlet. This synergistic fouling, coupled with silicon, coincides with the transformation of silica colloids into silicate compounds. The multistage membrane-based strategy and the spatial membrane fouling evolution pattern proposed and investigated in this work provide a highly efficient and cost-effective solution for industrial brine treatment with ZLD.
研究领域:
环境工程
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水资源管理
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Mengxiang Fang,Ying Xie,Yan Shao,Xiaoming Xu,Yang Xia,Man Mou,Ximing Hu,Tao Wang,Zihao Liu
The steel industry generates 7–9 % of the world’s anthropogenic carbon emissions. Carbon capture, utilization, and storage (CCUS) technologies for low carbon emissions from the steel industry have attracted research attention. Chemical absorption is the most mature and widely used carbon capture method, and reducing the energy consumption of this technology is currently a research hotspot. This work focused on the development of amine blends suitable for carbon capture in a top gas recycling-oxygen blast furnace (TGR-OBF) for low-carbon steelmaking and further reduction of carbon emissions. The effects of piperazine (PZ) and its derivatives on methyldiethanolamine (MDEA) activation were explored. PZ and 2-(piperazin-1-yl)ethanamine (AEP) most significantly activated MDEA. The best absorption and regeneration performance was achieved with aqueous amine solutions at the MDEA:PZ and MDEA:AEP ratios of 5:3 and 1:1, respectively. Blast furnace gas is rich in CO, and we verified that CO does not significantly affect the overall performance of the aqueous amine solution. The maximum absorption rate of the developed MAA absorbent was similar to that of 30 wt% monoethanolamine (MEA), and at 20 % and 35 % CO 2 , the cyclic capacities were 1.57 and 1.47 times greater than that of 30 wt% MEA, while the maximum regeneration rates were 2.13 and 1.92 times greater than those of 30 wt% MEA, respectively. A bench-scale CO 2 capture experiment performed at a flow rate of 4 Nm 3 /h verified the scale-up application potential of the absorbent. The regeneration energy of MAA under the optimal operating conditions was 2.86 GJ/ton CO 2 , which was 28.5 % lower than that of 30 wt% MEA. Moreover, MAA displayed a lower latent heat and lower reaction heat. The developed MAA absorbent has great adaptability and low regeneration energy and is expected to be applied in the steel industry to effectively reduce blast furnace carbon emissions.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
THIN SOLID FILMS
·
2018
·
IF 1.939
Hao Li,Sirong Yu,Jinhui Hu,Enyang Liu
In this research, a simple and economical method was used to fabricate a superhydrophobic Zn coating with ZnO nanosheets on steel substrates. Electrodeposited Zn coating was firstly formed on the steel substrate for anti-corrosion. Then we used hydrothermal method to process the electrodeposited Zn coating for in-situ growth of ZnO nanosheets. After low-energy modification with pentadecafluorooctanoic acid, the Zn coating with ZnO nanosheets on the steel substrate became superhydrophobicity, with water contact angle of 158° and the sliding angle of about 6°. The prepared superhydrophobic Zn coating with ZnO nanosheets exhibited good stability and excellent self-cleaning property. As a result, this combination method could be utilized in large scale production due to its simplicity and low-cost.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2017
·Vol. 7
·期 63
·39699-39703
·
IF 3.108
Peng Wang,Tao Yao,Bo Sun,Tiejun Ci,Xiaoliang Fan,Huilong Han
In this research, a simple and cheap method was presented to make steel superhydrophobic. A mixture of antiformin solution and hydrogen peroxide was utilized to grow a porous structure on steel foil; the antiformin solution is much cheaper and more environmentally friendly than the use of strong acids. More interestingly, lotus-leaf-like hierarchical micro-nanostructures were formed after ultrasonic treatment. The superhydrophobic surface can be further prepared by surface modification, which could withstand sandpaper abrasion for 2.24 m under a pressure of 24.50 kPa without losing superhydrophobicity. Moreover, the as-prepared superhydrophobic surface exhibits excellent self-cleaning and anti-corrosion properties.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2022
·
IF 6.437
Li Xiang,Haowen Li,Qipeng Qu,Fawei Lin,Beibei Yan,Guanyi Chen
Heavy oil residue (HOR) as a kind of oil-containing wastes (OW) is suitable to be treated by pyrolysis to obtain valuable products. However, the recovered products remain poor quality due to much heavy fractions in feedstock. This paper employed two typical steel wastes, i.e. iron-rich rolling sludge (FOS) and steel slags (SS), for catalytic pyrolysis of HOR to upgrade pyrolytic products. FOS and SS additions both effectively decreased the temperature of HOR pyrolysis stage and the activation energy . Compared with SS, FOS addition enhanced the yield of CH 4 and H 2 , leading to higher heating values for pyrolytic gases. However, insufficient FOS couldn’t provide enough energy to trigger the conversion of macromolecules as well as the cracking of short-chain alkanes and alkenes . In terms of pyrolytic oil, SS addition greatly improved the content of light fractions and exhibited stronger selectivity in reforming of alkanes into alkenes, while FOS addition promoted aromatization. Furthermore, Fe-doping carbon materials with different valent Fe and abundant defects were obtained through pyrolysis of HOR/FOS and HOR/SS. Combined with their magnetic properties, the separation of materials from contaminants and subsequent cycle utilization could be achieved. Subsequently, the addition of different Fe compounds validated the promotion of zero-valent Fe on aromatization while Fe 2 O 3 on alkenes production as well as Fe oxides would offer active oxygen species to participate in the pyrolysis reaction. However, model Fe compounds were hard to simulate catalytic behaviors of FOS and SS in gas production due to the complex components of steel wastes. This paper provides a novel perspective for upgrading all products from HOR pyrolysis and opens a path for simultaneous disposal of multiple solid wastes.
研究领域:
能源与燃料化学
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环境工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Xiangyu Ge,Linghao Zhang,Qiuyu Shi,Yuhao Xing,Yanfei Liu,Zhengfeng Cao,Wenzhong Wang
Achieving macroscopic superlubricity in electric environments on steel surfaces remains a challenge. This study achieved macroscopic superlubricity on steel surfaces by employing graphene oxide (GO) nanosheet additives with electric stimulation. Multiple factors were studied regarding the effect on lubrication performances. The morphology of the GO adsorption film on the intermittent contact surface (disc) is the main factor affecting the COF, as the continuous contact surface (ball) is required to overcome the peaks of GO film during sliding. The mechanism underlying the friction reduction is concluded as follows: when the intermittent contact surface (disc) was the positive pole, negatively charged GO migrated towards it, forming an adsorption film on its surface. The surface layer orientation of the GO film is relatively smooth, attributed to its contact with the negative pole (ball), resulting in friction reduction. This study illustrates the feasibility of achieving macroscopic superlubricity on steel interfaces through electric stimulation, thereby laying the groundwork for practical applications of superlubricity in engineering contexts, particularly in electric environments.
研究领域:
材料科学
·
工程学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Yi-Hong Yu,Xin Cui,Yi-Meng Hong,Gao-Wu Qin,Song Li
Incorporating electrochemical CO 2 reduction (ECR) that produces CO-rich syngas into the workflow of steelmaking presents a promising strategy to neutralize the steelmaking industry. Herein, we develop a highly efficient and stable Ag nanowires with surface CeO 2 armors (CeO 2 /AgNWs) as ECR electrocatalyst for syngas production. The engineered CeO 2 -Ag interface facilitates CO 2 -to-CO conversion by lowering the energy barrier for *COOH intermediate formation through synergistic electronic effects. At an industrially relevant current density of −251.3 mA cm −2 , the CeO 2 /AgNWs generate CO-rich syngas by co-electrolysis of CO 2 and H 2 O, with a high Faradaic efficiency (FE) of 92.1 % for CO. Techno-economic analysis (TEA) reveals that integrating the CeO 2 /AgNWs-driven ECR into existing steelmaking workflows can potentially reduce CO 2 emissions by 83 % and elevate the renewable energy utilization to ∼91.4 %, unlocking new possibilities for achieving carbon neutrality in the steel industry.
研究领域:
材料科学
·
能源工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2021
·
IF 5.161
Jie Zhang,Xiang Zhang,Yuying Zheng
Graphene (G) is an excellent protection material, but suffering corrosion-promotion effect because of its intrinsic high electrical-conductivity. Herein, a facile strategy is presented to effectively lower the conductivity of the G by the encapsulation of insulating poly(p-phenylenediamine) (PpPD). The obtained G@PpPD, which delivers an extremely low conductivity of 3.5×10 −7 S cm -1 , were then mixed with polyvinyl-butyral (PVB), forming a compact composite coating that can effectively protect Q235 steel from being corroded over a very long period. Such a superior anticorrosion property can be owing to the synergistic effect between impermeable graphene and insulated PpPD, which not only hinders the diffusion of the corrosive media, but also inhibits the corrosion-promotion activity of the graphene. This effective strategy may provide valuable enlightenment for the further development of graphene-based polymer anticorrosive coatings with long-lasting corrosion resistance .
研究领域:
材料科学
·
腐蚀与防护
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2017
·Vol. 41
·期 13
·5436-5444
·
IF 3.269
Hao Li,Sirong Yu
A superhydrophobic Cu–Zn coating was fabricated on a steel surface by facile one-step electrodeposition, without being chemically modified by a low surface energy material. It was noted that three-level hierarchical structures, just like the surface morphology of a lotus leaf, were formed on the Cu–Zn coating surface via scanning electron microscopy (SEM) images. The water contact angle of the prepared Cu–Zn coating surface was 153.40°, and the sliding angle was less than 10°. From the aspect of chemical composition, it was characterized to confirm that the oxidation of Cu and Zn, and oxygen adsorption were the reasons for the superhydrophobicity. In terms of the surface morphology, based on the classical Wenzel and Cassie models, an idealized three-dimensional (3D) model was fabricated to demonstrate the rationality of the superhydrophobicity without chemical modification. Moreover, this three-level hierarchical Cu–Zn coating had stable superhydrophobicity, excellent self-cleaning properties, and stability.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）