BIOMASS & BIOENERGY
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2025
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IF 5.8
Hongtao Wang,Zhibao Huo,Qiang Jin
The steel industry accounts for 30 % of global industrial greenhouse gas emissions, which is primarily attributed to the utilization of metallurgical coke. While carbon-neutral biochar is a material that rivals conventional coke, the inferior mechanical properties and higher preparation temperature limit biochar as an ideal alternative for metallurgical coke. Herein, ammonium octamolybdate is employed to transform birch residues into metallurgical-grade biocoke at low temperature. AOM affords advanced catalytic capacity during pyrolysis under a nitrogen-oxygen mixture, inducing the formation of superoxide free radicals on birch residues to produce 2,5-furandicarboxylic acid. The resulting 2,5-furandicarboxylic acid serves as a polymerization agent to facilitate the cross-polymerization between biochar and bio-oil for preparing biocoke. The produced biocoke displays superior 6.2 MPa of compressive strength, 59.2 % of coke strength after reaction, 92.28 % of mechanical durability, and 38.79 MJ/kg of higher heating value, close to first-grade metallurgical coke. Carbon emission analysis shows replacing 30 % of metallurgical coke by biocoke for 1 t of iron production reduces 419.43 kg of CO 2 emissions. This study presents a mild pyrolysis-polymerization strategy to produce densified metallurgical-grade biocoke for metallurgical coke alternative and underscores biocoke's potential for low-carbon production of the steel industry.
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
·
IF 9.965
Bo Wang,Xiaogang Liu,Xinrui Miao,Wenli Deng
To obtain durable and multi-function superhydrophobic surfaces, we reported a facial method to prepare a multifunctional suspension (γ-Fe 2 O 3 @SiO 2 @PDMS suspension) named as FSP suspension, in which γ-Fe 2 O 3 was coated by the silica shell and PDMS was used as the outer layer. Superhydrophobic magnetic polyurethane (SMPU) sponge was prepared by immersing the polyurethane (PU) sponge into the FSP suspension, exhibiting the superior ability to absorb oil. In addition, it could also move directionally by the attraction of magnets and absorb the oil along the fixed path. The heated superhydrophobic magnetic stainless steel (H-SMSS) mesh was acquired by spraying FSP suspension onto the stainless steel mesh and then heating at 400 °C, which demonstrated superior superhydrophobicity and resistance to abrasion and chemical corrosion. Besides, the H-SMSS mesh displayed excellent flux and efficiency to separate the oil/water mixture. Rolling droplets on FSP particles, the superhydrophobic magnetic liquid marbles (SMLMs) were fabricated, in which liquids with different volumes were encapsulated and transported directionally. Further, it was convenient to inject liquid into the SMLM and withdraw liquid from it. Thus, the prepared FSP suspension has promising applications in constructing large-area, robust, and multifunctional surfaces and microreactors.
研究领域:
材料科学
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表面工程
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纳米技术
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DOI
PubMed
高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 11
·期 12
·10135-10149
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IF 1.5
Lijuan Gong,Kangquan Qiao
The corrosion inhibition performances of Diantipyrylmethane (DAM) for mild steel in 0.5 M H 2 SO 4 were investigated using weight loss, electrochemical impedance spectroscopy (EIS), potentiodynamic polarization, scanning electron microscope (SEM) and quantum chemical calculation. The obtained results reveal that DAM acts as a mixed-type inhibitor with a predominantly anodic reaction, and the inhibition efficiency increases with increasing inhibitor concentration whereas decreases with increasing temperature. The adsorption of DAM on steel surface is found to obey Langmuir isotherm, and the adsorption mechanism is mixed physical and chemical adsorption. The results of quantum chemical calculation demonstrate that pyrazolone rings within molecular structure of DAM play a dominant role in corrosion inhibition of mild steel.
研究领域:
材料腐蚀与防护
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物理化学
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电化学
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表面科学
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量子化学
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DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 11
·期 8
·7066-7075
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IF 1.5
Jiheng Ding,Hongran Zhao,Lin Gu,Shengpei Su,Haibin Yu
This paper reports the synthesis of waterborne epoxy phosphate emulsion (WEP) through the reaction between epoxy resin E44 and phosphoric acid and ammonia neutralization. Synthesized WEP was characterized by FTIR for the confirmation of reaction between epoxy groups and phosphoric acid and SEM for morphology. WEP acted as a modifier in two-component epoxy anticorrosion coating on rusty steel substrate. The anticorrosion properties of the coating on rusty steel were investigated by electrochemical impedance spectroscopy (EIS) and Tafel polarization curve. Tafel polarization curve revealed that waterborne epoxy coating containing WEP had better protection ability which is clearly reflected by the protection efficiency (96.6%). EIS study also showed the higher impedance value for WEP containing coating as compared to pure waterborne epoxy coating.
研究领域:
材料科学
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腐蚀与防护
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高分子化学
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表面工程
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电化学
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DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY
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2018
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IF 3.165
Fanlei Kong,Zhihong Nie,Zhongpo Liu,Shibin Hou,Jiangfeng Ji
The technique of anterior cervical corpectomy and fusion (ACCF) for strut grafting has become a widespread and actively applied for many cervical complaints including cervical degeneration of the intervertebral disks , cervical trauma , cancer, rheumatoid arthritis and multilevel cervical spondylotic diseases. To avoid the complications of the old techniques, the construct stability and long anterior screw-plate designs of the bone strut have been improved by using effective biomaterials. The nanostructured hydroxyapatite (HAp) incorporated with biocompatible polymer matrixes is an effective biomedical material and creating a functional properties applied for different tissue replacements such as dental, hips, knees , tendon and ligaments and tissue repair for maxillofacial reconstruction , stabilization of the jaw bone and spinal fusion . In the present investigation, we have successfully designed cylindrical nano titanium dioxide (n-TiO 2 ) interbody fusion with anterior plate fixation . The n-TiO 2 incorporated HAp/ Polyetheretherketone (PEEK) nanocomposite strut has a superior mechanical properties and larger contact area with high fusion rates as compared with the HAp/PEEK strut in the absence of n-TiO 2 nanoparticles . It is highly able to provide appropriate strength and biological activity similar to the conventional titanium cage and also mainly it has been minimizes subsidence value. The synthesized novel material of n-TiO2 incorporated HAp/PEEK nanocomposite strut is scientifically given effective outcomes for fusion and reconstruction of the ACCF.
研究领域:
生物医学工程
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骨科手术
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材料科学
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DOI
高影响因子
DESALINATION
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2014
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IF 3.96
Yaojie Li,Lifen Liu,Jiadong Liu,Fenglin Yang,Nanqi Ren
To increase effluent quality and membrane flux , membrane bioreactor was integrated with microbial fuel cell (MBR/MFC), in which functional cathode membranes could enable fouling reduction and even electro-catalytic pollutant degradation using the bio-generated electricity. Modifying stainless steel mesh (SSM) with only polypyrrole (PPy) or cheap ARS (Alizarin Red's) or expensive AQS (9,10-anthraquinone-2-sulfonic acid) doped PPy film, helped obtain high ORR (oxygen reduction reaction) activity and higher power output in the integrated MBR/MFC system. The ARS and PPy modified cathode membranes, could not only increase the degradation of (MB) methylene blue (> 90%, 1 h), but also enable higher antifouling property in filtrations. Most importantly, replacing the blank SSM, the use of PPy/AQS, PPy/ARS and PPy modified SSM, increased power density 31.37, 27.06 and 23.7 times respectively in the integrated MBR/MFC system. The new system has great application potential and economic feasibility in effective removal of COD and NH 4 + -N nutrients, has better effluent qualities and has higher energy recovery.
研究领域:
环境科学
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生物技术
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材料科学
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DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2023
·Vol. 64
·期 2
·779-787
·
IF 3.2
Xiang Zhang,Zhenggang Xiao
Organic anticorrosion coatings (OACs) are the most effective, economical, and environmentally friendly protection strategy for metals. However, the traditional OACs usually inevitably suffer mechanical cracks during their service life. If not repaired in time, the resultant cracks in OACs will result in irreparable corrosion of the metal substrate. More detrimentally, these microcracks are not easily detectable at the initial stage. If OACs can autonomously heal their damage at the initial stage, the microcracks will be repaired in time and the metal substrate will be protected well. Thus, giving OACs the self-healing capability is a promising strategy for metal protection. Herein, an autonomously self-healing TiO 2 -reinforced silicone polyurea (SPU- g -TiO 2 ) elastomer was successfully designed as anticorrosion coating for Q235 carbon steel (QCS) protection. The SPU- g -TiO 2 elastomer matrix exhibited excellent stretchability with a maximum strain of 3826.72% and fast self-healing ability with an outstanding self-healing efficiency of 98.69% for 6 h without any external stimulus at room temperature. The QCS coated with SPU- g -TiO 2 showed excellent damage resistance and good anticorrosive ability, and it can self-heal the microcracks generated in its coating in time to prevent corrosive media corroding the internal mental substrate. This work has a positive guiding significance for the development of functional OACs to improve their protection for metallic materials. Highlights A bionic smart self-healing SPU- g -TiO 2 coating was successfully synthesized. The mechanical and self-healing properties are balanced using nanoparticles. The coating features excellent self-healing capability and stretchability. Q235 steel coated with SPU- g -TiO 2 shows good anticorrosive ability.
研究领域:
材料科学
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腐蚀工程
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聚合物化学
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DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Xiaofang Luo,Shengtao Zhang,Lei Guo
Inhibition performance of omeprazole for mild steel in 0.1M H2SO4 solution has been investigated through different approaches including potentiodynamic polarization, electrochemical impedance spectroscopy (EIS), weight loss, scanning electron microscope (SEM) experiments and theoretical calculations. The experimental results reveal that omeprazole is an effective inhibitor with a maximum achievable inhibition efficiency of 98.5%, and the adsorption of omeprazole on the mild steel surface is found to obey the Langmuir adsorption isotherm. Polarization curves illustrate that omeprazole acts as a mixed-type inhibitor, and EIS demonstrates that an adsorption film of the inhibitor is formed on mild steel surface. Moreover, quantum chemical calculations and the molecular dynamics (MD) simulation are also performed to gain the further insight of the inhibition mechanism of omeprazole on steel corrosion, which show that the possible adsorption centers of the omeprazole molecule are benzene ring, benzimidazole ring, sulphinyl and the nitrogen atom of the hexaheterocyclic.
研究领域:
材料科学
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腐蚀科学
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电化学
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表面科学
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应用化学
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理论化学
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DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Le Ruan,Zhe Zhang,Xiaodong Huang,Yuzeng Lyu,Yuqing Wen,Wei Shang,Ling Wu
The corrosion behavior of aromatic aldehyde Schiff bases self-assembled (SA) films on carbon steel (CS) surface was measured by electrochemical impedance spectroscopy (EIS) and polarization curves with different immersion time. The results showed that after assembling in two Schiff base solutions for 12 h, the corrosion efficiency of the SA films on CS surface reached 92.80% and 93.66%, respectively. Scanning electron microscopy (SEM) micrographs showed that the SA films can prevent CS corrosion in HCl solution. The quantum chemical calculations and dynamic simulations were employed for investigation of the inhibition mechanism.
研究领域:
材料腐蚀与防护
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表面科学
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电化学
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金属材料学
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物理化学
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DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2015
·
IF 4.169
Juan Zheng,Yeru Liang,Shuqin Liu,Ruifen Jiang,Fang Zhu,Dingcai Wu,Gangfeng Ouyang
A combination of nitrogen-doped ordered mesoporous polymer (NOMP) and stainless steel wires led to highly sensitive, selective, and stable solid phase microextraction (SPME) fibers by in situ polymerization for the first time. The ordered structure of synthesized NOMP coating was illustrated by transmission electron microscopy (TEM) and X-ray diffraction (XRD), and microscopy analysis by scanning electron microscopy (SEM) confirmed a homogenous morphology of the NOMP-coated fiber. The NOMP-coated fiber was further applied for the extraction of organochlorine pesticides (OCPs) with direct-immersion solid-phase microextraction (DI-SPME) method followed by gas chromatography–mass spectrometry (GC–MS) quantification. Under the optimized conditions, low detection limits (0.023−0.77 ng L −1 ), a wide linear range (9−1500 ng L −1 ), good repeatability (3.5−8.1%, n = 6) and excellent reproducibility (1.5−8.3%, n = 3) were achieved. Moreover, the practical feasibility of the proposed method was evaluated by determining OCPs in environmental water samples with satisfactory recoveries.
研究领域:
分析化学
·
环境科学
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DOI
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Jinhua Feng,Junnan Chen,Shuchang Wang,Miaomiao Jia,Zhiyu Zhang,Tongwen Yu,Ming Xue
Searching for the efficient and sustainable inhibitors to defend metal corrosion in the marine environment has received a great deal attention in both academia and industry. In this work, a new strategy was developed to encapsulate benzimidazole (BI) inhibitor guest molecules into the micropores of bio-MOF-1, which was constructed with the other natural adenine inhibitor. Electrochemical characterizations revealed that the slowly sustained release of BI and adenine inhibitors from the BI@bio-MOF-1 composite presented excellent anti-corrosion durability in the whole mild steel corrosion process. The impedance arc value attained approximately 5000 Ω·cm2 at initially 2 h and further increased to 6000 Ω·cm2 after 5 days immersion in 0.5 M NaCl solution, and the inhibition efficiency reached 85.36% due to the synergistic dual inhibitive effect of BI@bio-MOF-1 composite. The dual inhibition-based bio-MOF-1 composite equipped strong metal-chelating capability and response durability, exhibiting high potentiality for metal anti-corrosion applications.
研究领域:
材料科学
·
腐蚀工程
·
化学工程
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Gaoming Li,Yeping Wu,Ping Zhang,Xiuli Zhao,Sixun Zheng,Yinyu Zhang
Bonding is widely used in aircraft and vehicles due to its light weight and simple process, but its strength decreases sharply in hot and humid environments. Anodization treatment, used for enhancing aging performance, is environmentally harmful and unsuitable for steel. In this study, a catechol-modified epoxy adhesive (CMEA) was prepared on a hectogram scale. Comparative analysis with phenol-modified epoxy adhesive (PMEA) and pristine epoxy adhesive (EA) revealed that the underwater bonding of CMEA (13.0 MPa) on stainless steel (SS) significantly outperformed the two control groups. Moreover, after 32 days of hydrothermal aging at 50 °C, CMEA preserved 73.9% of its initial bonding strength, while PMEA and EA retained 59.8 and 11.4%, respectively. Furthermore, X-ray photoelectron spectroscopy (XPS) etching at different times to analyze the interface between adhesives and the SS substrate indicated a marked increase in the O–H/O2– value at the interface between CMEA and the SS substrate compared to the two control groups. The above results demonstrated that the catechol-modified adhesive enhanced the bonding and aging properties of the adhesive, possibly due to the formation of a higher density of hydroxyl groups at the interface between the adhesive and the SS substrate. These findings contribute to the understanding of the enhancement mechanism of catechol in improving the bonding and aging properties of adhesives and suggest a feasible direction for designing adhesives with high bonding strength and high durability.
研究领域:
材料科学
·
粘接技术
·
表面化学
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DOI
高影响因子
危险品化学品经营许可证（带存储）