SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2024
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IF 6.3
Liuxin Wang,Sijie Liu,Renda Wang,Shuai Xu,Chunmei Wen,Fangfang Ge,Mengyu Gao,Yang Si,Sizhe Diao,Bingsheng Li
Solar salts have a high energy storage density, and using solar thermal power generation technology can provide humanity with long-term, stable, and low-cost electricity. However, severe corrosion of structural materials when in contact with molten chloride salts is one of the main challenges limiting their long-term service at high temperatures. In this study, two types of aluminium-containing austenitic (AFA) stainless steels: 18Ni and 25Ni AFA steels, were prepared and their corrosion behavior in molten chloride salt (NaCl-MgCl₂-KCl with 30.2–47.1–22.7 mol.%) at 700 °C over different durations (200, 400, 600, and 800 h) was investigated. The corrosion products, thickness of the corrosion layer, and microstructure were characterized in detail. The effects of alloying elements on enhancing resistance to molten chloride salt corrosion were studied. Both types of AFA steels exhibited significant dissolution and oxidation behavior during the corrosion process, and the aggregation of Laves phases was observed. The corrosion depth after 800 h was found to reach a maximum of 131.3 μm, significantly lower than conventional 304 stainless steels under similar conditions. Why AFA steels exhibit resistance to chloride salt corrosion is discussed. The findings provide valuable guidance for the development of structural materials suitable for high-temperature molten chloride salt applications.
研究领域:
材料科学
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腐蚀工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2025
·
IF 4.7
Mohammed Mustafa Yousif Modwi,Yafei Liu,Fuyuan Li,Ying Lv,Abdalbagi Ismail,Dafaalla Hassan,Huixia Feng
Herein, the eco-friendly corrosion inhibitor Schiff Bases Based on Chitosan has been successfully synthesized, and its new structure was characterized via Fourier transform infrared spectroscopy (FT-IR) and proton nuclear magnetic resonance ( 1 H NMR). The efficiency of corrosion inhibitors was studied via classic weight loss, electrochemical impedance spectroscopy (EIS), and potentiodynamic polarization (PDP) methods. The studies indicated that the Per/CS corrosion in 1.0 M HCl has mixed-type behavior with inhibition efficiency with 600 mg L -1 reaching 97 % at 25 °C. Thermodynamic calculations, such as the equilibrium constant of adsorption (K ads ) and the free energy of energy of adsorption (ΔG ads ), suggested that Per/CS exhibits a mixed mode of adsorption. The activation energy, enthalpy, and entropy were calculated and discussed. The results indicated the formation of a protective film of Per/CS inhibitor on the Q235 carbon steel surface, which was investigated via various techniques such as scanning electron microscopy (SEM), Water contact angle, and atomic force microscopy. The X-ray photoelectron spectroscopy indicated the existence of Per/CS molecules on the carbon steel surfaces. Quantum chemical calculations, DFT, and Fukui indices were also applied to describe the adsorption mechanism. Adsorption locator and MD simulations were also performed to describe the ability of the Per/CS molecule to adsorb on the Fe (110).
研究领域:
材料科学
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电化学
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量子化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Yingshi Zhu,Mingzhu Xu,Mingzhi Li,Jianqiu Zhu,Yanfei Wei,Lecheng Lei,Yuru Li,Tao Yu,Zhongjian Li,Yang Hou,Bin Yang
The extensive production of fly ash, despite its untapped potential due to its inherent richness in Fe, Ca, Si and Al, remains significantly underutilized. Herein, we innovatively designed a core–shell catalyst, waste steel slag@fly ash (WSS@FAC). It features a Fe-rich waste steel slag core surrounded by a high-strength, porous fly ash shell, effectively utilizing these valuable resources. This design leverages not only the Fe content for catalytic activity but also the abundant Ca, Si and Al in fly ash to enhance the structural integrity of the shell. By strategically incorporating Na 2 SiO 3 , the compressive strength of the shell was significantly boosted from 12.10 MPa to 24.12 MPa, attributed to formation of a robust glass framework structure. Furthermore, modulation of NaHCO 3 content engineered Fe leaching channels with an average pore size of 14.46 nm within the shell, ensuring controlled release of Fe ions through core–shell interactions. When the initial concentration of rifampicin was 10–60 mg/L, the removal rate could be as high as 97.06 ± 1.93 % − 83.78 ± 0.47 %. Over an extended reaction period of 80 h, the leached Fe concentration for WSS@FAC was only 1.88 ± 0.11 mg/L, which was approximately one-ninth of that for the same initial mass of WSS catalyst. Remarkably, the catalytic performance of WSS@FAC decreased by only 9.23 % from its initial efficiency of 83.78 %, highlighting its exceptional long-term stability. This study presents a novel Fenton-like catalyst that not only reduces Fe sludge production but also advances the sustainable recovery of Fe-containing industrial wastes, underscoring the importance of comprehensively utilizing all components within fly ash.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE
·
2024
·Vol. 55
·期 5
·3995-4000
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IF 2.4
Chen Angran,Zhang Yanyun,Coetsee Theresa,Kaldre Imants,Wang Cong
EH36-shipbuilding steel has been welded by CaF 2 -ZrO 2 fluxes with designed ZrO 2 additions. Possible chemical and electrochemical reactions have been postulated to analyze alloying element transfer behaviors. The decomposition of ZrO 2 during SAW has been validated by applying the gas–slag–metal equilibrium model and the O supply capacity of ZrO 2 has been quantified. For the entire compositional range, O content has been controlled within a well-maintained range from 220 to 400 ppm, and the transferred quantity of Zr content reaches to the maximum value of 120 ppm. It is further demonstrated that ZrO 2 addition incurs appreciable Si loss within the weld metal.
研究领域:
材料科学
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焊接工程
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
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2024
·
IF 5.5
Wei He,Ru Yan,Xiang Gao,Yan Wang,Xinxiao Sun,Houyi Ma
Most Zr conversion coatings are prepared on Al alloys , with Al 3+ from the substrate contributing significantly to the film growth process. Thus, the effect of Al 3+ on the electrochemical characteristics, surface microstructure and film-formation mechanism of Zr-based conversion coatings on old- rolled steel (CRS) substrates was investigated by growing the coatings with and without Al 3+ as an additive. Electrochemical tests indicated that the anticorrosion performance of the Zr-Al coatings prepared in the presence of Al 3+ was greatly superior to that of Zr conversion coatings obtained in the absence of Al 3+ . Field-emission scanning electron microscopy and X-ray photoelectron spectroscopy analysis indicated that adding of Al 3+ in the conversion bath changed the surface microstructure of the Zr coating, greatly promoted the deposition of Zr and F on the CRS substrate and increased the film thickness and density. Both coatings were embedded into the etched CRS substrates. The presence of Al 3+ additive induced the formation of different coating components . The Zr coating mainly consisted of ZrO 2 and some FeF x , whereas the Zr-Al coatings comprised of ZrO 2 , ZrO x F y , Al 2 O 3 , AlF x and some FeF x . The present study results confirm the key role of Al 3+ as an additive in the film formation and growth process of Zr coatings and its effect on enhancing the anticorrosion performance of CRS substrates in NaCl solutions.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
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2025
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IF 6.3
Xiaoyu Liu,Yunhui Tang,Yuxiang Liu,Zhilin Cao,Ruzhi Wang,Bing Wang,Bo Wang
In marine environments, managing heat dissipation and corrosion resistance is critical for the longevity of 304 stainless steel, particularly in electronic devices exposed to high temperatures or operational speeds. This study addresses the challenge of enhancing the durability of 304 stainless steel under such conditions by developing a novel composite coating-Superhydrophobic/ZIF-8@CNT/high-entropy alloy (SZCP). The coating was applied to the steel using physical vapor deposition followed by ultrasonic spraying, consisting of a TiVCrAlCu high-entropy alloy film and a superhydrophobic ZIF-8@CNT layer. This innovative approach enhances the steel's thermal emissivity and radiative heat dissipation, as evidenced by the SZCP-coated materials maintaining temperatures up to 12 °C cooler than uncoated steel within 85 s. Electrochemical tests confirmed the high-entropy alloy film as an effective corrosion barrier, while the ZIF-8@CNT layer improved electrochemical stability, reducing the corrosion current density by 98.87 % and lowering the corrosion rate to 0.47 mm/year. Furthermore, treatment with Trimethoxy (1H, 1H, 2H, 2H-heptadecafluorodecyl) silane (FAS17) imparted self-cleaning properties to the coating, achieving contact angles over 150° and sliding angles below 3°, effectively reducing contamination from substances like sand and yogurt. This research introduces a strategic approach to improve the heat dissipation, self-cleaning, and corrosion resistance of metal substrates in challenging environments, offering significant potential for industrial applications.
研究领域:
材料科学
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表面工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2024
·
IF 7.4
Yongbo He,Mengqi Liu,Linzhi Zhai,Hongshuang Li,Peng Song,Xiufang Zhu,Yubin Tang
The metal organic framework (MOF) polycrystalline membranes on stainless steel mesh (SSM) are urgently required for effective oil-water separation, but the affordable preparation still remains a challenge. Herein, we report a series of UiO-66-NH 2 /SSM films, which are developed by a rational ‘seeding-assisted secondary growth’ method. Results depict that the proposed method greatly shortens the synthesis time, and helps to achieve a continuous and uniform modification of UiO-66-NH 2 on SSM, and hence contributes to a superior hydrophilicity and superoleophobicity for UiO-66-NH 2 /SSM with minimum water contact angle of 32° and maximum underwater oil contact angle of 150°, respectively. Specifically, the UiO-66-NH 2 /SSM-600–2 has total permeation fluxes and separation efficiencies of ca. 8.4×10 4 L·m −2 ·h −1 and 100% for the n-hexane-, petroleum ether- and chloroform-water emulsions (1% volume ratio), which exceed numerous polycrystalline membranes reported so far. It also exhibits a great durability with only 0.1% loss of separation efficiency after 8 cycles. Furthermore, outstanding acid-resistivity and salt-tolerance are also presented. Our work supplies a new strategy to construct UiO-66-NH 2 /SSM, and the decent properties confirm a huge potential for practical use in oil-water separation.
研究领域:
材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2021
·
IF 3.882
Liang Pan,Guoxi Li,Zhaoyang Wang,Dongbao Liu,Weikang Zhu,Chunyi Tong,Rilong Zhu,Shilin Hu
To reduce the corrosion of Q235 steel, environment-friendly and efficient N-doped carbon dots (N-CDs) were synthesized using 4-amino salicylic acid (4-ASA) and l-histidine (l-His) as precursors. The corrosion inhibition behavior of N-CDs for Q235 steel in 1 M HCl solution was systematically investigated using a weight-loss experiment, an electrochemical test, and corrosion morphology. Results showed that N-CDs could effectively inhibit the corrosion of Q235 steel, and the inhibitory efficiency reached 93% at 50 mg L–1. Quantum chemistry and molecular dynamics were used to study the inhibition mechanism of N-CDs. The results demonstrated that N-CDs exhibited a strong adsorption force on metal and the adsorption process followed the Langmuir adsorption isotherm, indicating physical/chemical mixed adsorption.
研究领域:
材料科学
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环境科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Water Process Engineering
·
2021
·
IF 5.485
Qian Zhao,Liang Hao,Fei Li,Tongyang Liu,Yiqiang He,Jun Yang,Yifan Zhang,Yun Lu
The hydrothermal method was used to prepare flexible BiOCl-BiOI films on one stainless steel wire mesh. Nano-flower like BiOCl-BiOI crystals consisted of nanoplates were formed, and BiOCl was uniformly distributed. The XPS (X-ray photoelectron spectroscopy) spectra confirm the formation of BiOCl-BiOI heterojunction, which enhanced the visible light absorption of the BiOI film. The photocatalytic activity of the BiOCl-BiOI film in degrading RhB and MB was elevated by at most 8.7 and 2.4 times, respectively, comparing with the individual BiOI film. We designed and constructed a piezo/photocatalytic platform in which the prepared BiOCl-BiOI films were fixed on a rotating shaft. Compared with the static state, the photocatalytic activity of the BiOCl-BiOI film was increased by 1.4 times when the shaft was rotating. We believe that the enhancement of the photocatalytic activity should be ascribed to the piezoelectric field by introducing bending deformation, which accelerated the separation of photogenerated electrons and holes. The improvement mechanism of the photocatalytic and piezo/photocatalytic performance was proposed and discussed. The flexible BiOCl-BiOI heterojunction films show significant application potential in the pollution control of fluid fields such as rivers, oceans, waterfalls, and air.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Jihao Zuo,Yi Zhou,Zehao Chen,Ting Zhao,Qing Tan,Cailong Zhou,Xinjuan Zeng,Shouping Xu,Jiang Cheng,Xiufang Wen,Pihui Pi
Design of charged materials for demulsification of ionic surfactant-stabilized oil-in-water emulsions is emerging in recent years. Herein, a superwetting stainless steel mesh with Janus surface charges (Janus SSM) was prepared by respectively brush-coating polyethyleneimine/aminated carbon nanotubes (PEI/CNTs-NH 2 ) coating and polyacrylic acid (PAA) coating on its two sides. Two demulsification mechanisms, i.e., electrostatic attraction-repulsion and electrostatic repulsion-attraction based on the synergism of two oppositely charged sides were proposed. Combined with the superwettability and optimized pore size, the Janus SSM can successfully be used to demulsify, coalesce and separate emulsions. In detail, the Janus SSM exhibited separation efficiencies of up to 99.29%, 97.12% for SDS- and DTAC-stabilized oil-in-water emulsions respectively under the electrostatic attraction-repulsion mechanism, and up to 97.10%, 98.57% under the electrostatic repulsion-attraction mechanism. The results indicated that the electrostatic attraction-repulsion mechanism proposed in this study is conductive to achieving higher efficiency in emulsion separation. Furthermore, excellent durability extend the operation life of Janus SSM. This Janus SSM, which combines opposite charges on its two sides, may advance the development of charged materials for emulsion separation.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Xiangxiao Qiu,Jifeng Li,Zhanqing Liu
Earlier investigations have shown that corrosion products of weathering steel presented photovoltaic effect under illumination. In this study, we explored the influence of chloride ions on this effect and the related corrosion behavior. Open circuit potential, electrochemical impedance spectroscopy and Mott- Schottky plots were recorded on weathering steel surface treated with NaCl after 3 days exposure in simulated atmospheric condition under illumination. For comparison, similar study was also performed on the weathering steel surface without NaCl deposition. There was clearly photoelectrochemical response difference between the samples. It was found that the defects concentration and electric conductivity of the corrosion products were higher due to the chloride ions migration, which was promoted by incorporation of photo-generated holes under illumination. The detailed mechanism was discussed in this study.
研究领域:
材料科学
·
电化学
·
腐蚀工程
✓ 已验证
DOI
高影响因子
CORROSION
·
2022
·Vol. 78
·期 4
·324-338
·
IF 2.094
Xu Yangshuhan,Mao Jie,Li Minghua,Wang Shufen,Yu Tingting
Corrosion of carbon steel causes many losses, hazards, and contaminations to our daily life. In this article, epoxy synergistically added with hydrophobic nano-silica and graphene was prepared to provide corrosion protection for carbon steel. Graphene can act as filler to improve the corrosion resistance of epoxy, but the aggregation of graphene severely affects its application. Embedding hydrophobic nano-silica into graphene sheets contributes to the good dispersity of graphene in an epoxy matrix. Besides, SiO 2 can also act as another filler to improve corrosion resistance. Hence, the synergistical addition of hydrophobic nano-silica and graphene into epoxy can provide better corrosion resistance for modified epoxy coating. A scanning electron microscope was used to investigate the microstructures of modified epoxy coating. Coating wettability was measured by a static contact angle measurement instrument. The anticorrosive behaviors of modified coatings were measured by an electrochemical workstation. The corrosion mechanism was analyzed by equivalent circuits simulation. According to the results, the modified coating with impedance of about 10 8 Ω·cm 2 (10 mHz) at 100 d immersion still showed excellent anticorrosive performance. In general, epoxy doped with hydrophobic nano-silica and graphene displays better corrosion protection than epoxy without modification.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）