COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2020
·
IF 3.99
Deng Wang,Jiaxin Yang,Fei Xue,Jihui Wang,Wenbin Hu
Zinc coordinated 1-hydroxyethylidene-1,1-diphosphonic acid (Zn-HEDP) film was fabricated on steel surface by coordination self-assembly method. The surface morphology and chemical composition of Zn-HEDP film were investigated by scanning electron microscopy (SEM) and energy dispersive spectrometer (EDS), and the structural and valence state of Zn-HEDP film was determined by Fourier transform infrared spectroscopy (FTIR), Raman spectra and X-ray photoelectron spectroscopy (XPS). The corrosion resistance of Zn-HEDP film in 3.5wt% NaCl solution was investigated by using potentiodynamic polarization curve and electrochemical impedance spectroscopy (EIS) techniques. The experimental results show that Zn-HEDP film is in a smooth surface with disturbed nanoparticles. The protection efficiency of Zn-HEDP film to steel in 3.5 wt% NaCl solution is firstly increased and then decreased with the increasing of zinc concentration, pH value and assembly time. The optimum preparation conditions for Zn-HEDP film are the zinc concentration of 10 mmol/L, pH value of 5.0 and assembly time of 30 min, under which the protection efficiency of film is reached to 95.79 %. The coordination between zinc ions and HEDP can effectively increase the binding energy with Q235 steel. Zinc ions can improve the compactness and thickness of Zn-HEDP films as bridging agents, which prevent Q235 steel from corrosive solution.
研究领域:
材料科学
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电化学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
Energy Storage Materials
·
2021
·
IF 17.789
Weibo Huang,Yan Wang,Linze Lv,Wei Wang,Chengchang Jin,Guobin Zhu,Qiang Shi,Qunting Qu,Chao Jin,Honghe Zheng
Fluoroethylene carbonate (FEC) is an important electrolyte additive in silicon (Si) anodes. However, it is easily defluorinated by Lewis acids (PF 5 − ) to form harmful corrosive substances (HF). To overcome this problem, 1-Hydroxyethylidene-1, 1-diphosphonic acid (HEDP), a novel multifunctional surface modifier is developed on the Si surface. It can not only consume HF, but also participate in the formation of a solid electrolyte interphase (SEI) film with excellent electrochemical stability, high lithium conductivity, and good thermal stability. In addition, Si@HEDP anode with polyvinylidene fluoride (PVDF) binder exhibits much improved electrochemical performance. After 500 cycles at 30 °C, a high reversible capacity of 1831.8 mAh g − 1 is obtained; and after 200 cycles at 60 °C, it still maintains 2163.8 mAh g − 1 ; which are in sharp contrast to the reference Si anode of almost zero capacity after 25 cycles. This work overcomes the fundamental challenges of using FEC electrolyte additive and PVDF binder in Si-based batteries.
研究领域:
材料科学
·
电化学
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Jianhua Kang,Sultan Ahmed Khoso,Yuehua Hu,Wei Sun,Zhiyong Gao,Runqing Liu
A selective organic depressant was investigated to promote the separation of scheelite from calcite and fluorite . 1-Hydroxyethylidene-1, 1-diphosphonicacid (HEDP) could efficiently reduce the recoveries of calcite and fluorite to less than 20%, while that of scheelite remained above 85%. The selective interaction mechanism was demonstrated via Zeta potential and X-ray photoelectron spectroscopy (XPS) analyses. The conceivable adsorption models of reagents on mineral surfaces were constructed to explain their adsorption mechanism. HEDP exhibited an excellent ability to selectively depress calcite and fluorite attributed to the intense adsorption on their surfaces, whereas its adsorption on scheelite surface was feeble. The technology feasibility of using HEDP to improve the scheelite flotation performance was verified through laboratory and industrial tests. The roughing grade was dramatically improved from 1.22% to 1.68%, and the product grade was enhanced from 24.66% to 28.26% with a noteworthy improvement of cleaning recovery by 6.93%, which would produce a considerable economic benefit.
研究领域:
矿物加工工程
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2021
·
IF 6.165
Yuwei Zuo,Yue Sun,Wenzhong Yang,Kegui Zhang,Yun Chen,Xiaoshuang Yin,Ying Liu
The performance and mechanism of typical scaling inhibitors, i.e., 1-hydroxy ethylidene-1,1-diphosphonic acid (HEDP) and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA), in inhibiting calcium carbonate scaling were investigated. Results of the static experiment at 30 °C and 80 °C revealed that at the optimal concentration, the scaling inhibition efficiency of PBTCA was superior to that of HEDP. Additionally, X-ray powder diffraction evaluation demonstrated that in comparison with HEDP, PBTCA inhibited the growth of the (1 0 4) crystal plane of calcite more evidently. Scanning electron microscopy analysis indicated that the addition of scaling inhibitors induced the crystal transformation of CaCO 3 from calcite to aragonite. Molecular dynamics simulation also confirmed that the interaction of PBTCA with the (1 0 4) crystal surface of calcite is more apparent than that of HEDP. This observation was a consequence of the PBTCA being more negatively charged, as determined via a quantum chemical calculation. The calculation further indicated that the spatial distance of PBTCA to the (1 0 4) face of calcite was less due to stronger chelating ability and better suitability of the structure. As a result, in the tested temperature range, PBTCA exhibited the more effective inhibitory effect against calcium carbonate scaling.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
·
2013
·Vol. 66
·期 1
·84-90
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IF 1.66
Kong Gengjin,Guo Zhihan,Shen Chunhui,Chen Cheng
Proton conductive inorganic–organic hybrid membranes were synthesized from Epoxycyclohexylethyltrimethoxysilane (EHTMS) and 1-hydroxyethane-1,1-diphosphonic acid (HEDPA) by the sol–gel method. In this paper, the effect of gel temperature, membrane-forming temperature and Si/P on hybrid membranes performance were discussed. FT-IR studies revealed the phosphonic acid was chemically bonded to the siloxane network. When the membrane-forming temperature is 150 °C, thermal analysis including TG and DTG confirmed that the hybrid membranes were thermally stability up to 250 °C and SEM images showed that the membranes surface smooth and dense, eliminating the phase separation phenomenon. The hybrid membranes with a molar ratio of Si/P = 6/1 possess better thermal stability and preferable flexibility.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2025
·
IF 3.2
Rao Qian,Li Hui-qiang,Yang Ping,Guo Ziou
Mo 2 C@Fe 3 O 4 and three kinds of MO 2 -doped Mo 2 C@Fe 3 O 4 were successfully fabricated as the Mo 2 C@TiO 2 @Fe 3 O 4 , Mo 2 C@MoO 2 @Fe 3 O 4 and Mo 2 C@CeO 2 @Fe 3 O 4 particles for the degradation of 2-methyl-4-isothiazolin-3-one and 1-hydroxy-1,1-diphosphonoethane in a three-dimensional electro-Fenton system. The catalyst particles showed an enhancement for the catalytic activity in the system. Furthermore, the Mo 2 C@CeO 2 @Fe 3 O 4 particles exhibited superior activity for 2-methyl-4-isothiazolin-3-one and 1-hydroxy-1,1-diphosphonoethane degradation compared to the other two particles. Based on the characterization of the synthesized particles, leaching concentration of Fe 2+ , generation of \({H}_{2}{O}_{2}\) , \(\bullet OH\) , \({O}_{2}^{\bullet -}\) , the reasons for the difference in pollutant degradation performance among the three type particles were comprehensively analyzed. At last, some important experimental parameters, such as particles dosage, current density and aeration intensity, which would obviously affect MIT and HEDP degradation performance were studied. Using the Mo 2 C@CeO 2 @Fe 3 O 4 as catalytic particles, optimal 2-methyl-4-isothiazolin-3-one and 1-hydroxy-1,1-diphosphonoethane degradation rates were 97.2% and 73.8% with 0.5 g of particle dosage, 97.22% and 73.75% with 300 mA of current density, and 97.28% and 73.71% with 0.1 L min −1 of aeration intensity.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CELLULOSE
·
2024
·Vol. 31
·期 6
·3783-3796
·
IF 4.9
Yin Xuchu,Wang Yuting,Xu Zhiguang,Zhang Tao,Zhao Yan
Cellulose-based, porous materials (polyHIPEs) templated from emulsions are promising for thermal insulation, but their high susceptibility to combustion when exposed to fire hinders the materials from various applications. Here, we report the fabrication of flame-retardant, cellulose-based, thermal insulating polyHIPEs and their application for early fire warning. The polyHIPEs were synthesized from cellulose crystal-stabilized Pickering emulsions, containing ammonium salt of 1-hydroxyethylidene-1,1-diphosphonic acid as a reactive flame retardant, with or without MXene. The resulting polyHIPEs exhibited pre-designable external shapes, flexibility, robust compression, excellent thermal insulation with a thermal conductivity as low as 31.9 mW/(m·K), and high flame-retardant performance with a limit oxygen index up to 52.4% and with heat release rate and total heat release to be as low as 0.9 kJ/g and 13.7 W/g, respectively. The high thermal insulation and flame-retardant performance, combined with the responsive resistance of MXene, enabled the MXene-containing polyHIPEs to be excellent candidates for early fire warning, with warning to be realized within 3 s, with or without external power supply. Graphical abstract
研究领域:
材料科学
·
化学
·
消防安全工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Acta Biomaterialia
·
2023
·
IF 9.7
Junyu Qian,Haotian Qin,Peijie Zeng,Jiaming Hou,Xiaoshan Mo,Gang Shen,Hui Zeng,Wentai Zhang,Yingqi Chen,Guojiang Wan
Zn and its alloys are increasingly under consideration for biodegradable bone fracture fixation implants owing to their attractive biodegradability and mechanical properties . However, their clinical application is a challenge for osteoporotic bone fracture healing , due to their uneven degradation mode, burst release of zinc ions , and insufficient osteo-promotion and osteo-resorption regulating properties. In this study, a type of Zn 2+ coordinated zoledronic acid (ZA) and 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) metal-organic hybrid nanostick was synthesized, which was further mixed into zinc phosphate (ZnP) solution to mediate the deposition and growth of ZnP to form a well-integrated micro-patterned metal-organic/inorganic hybrid coating on Zn. The coating protected noticeably the Zn substrate from corrosion, in particular reducing its localized occurrence as well as suppressing its Zn 2+ release. Moreover, the modified Zn was osteo-compatible and osteo-promotive and, more important, performed osteogenesis in vitro and in vivo of well-balanced pro-osteoblast and anti-osteoclast responses. Such favorable functionalities are related to the nature of its bioactive components, especially the bio-functional ZA and the Zn ions it contains, as well as its unique micro- and nano-scale structure. This strategy provides not only a new avenue for surface modification of biodegradable metals but also sheds light on advanced biomaterials for osteoporotic fracture and other applications. Statement of significance Developing appropriate biodegradable metallic materials is of clinical relevance for osteoporosis fracture healing, whereas current strategies are short of good balance between the bone formation and resorption. Here, we designed a micropatterned metal-organic nanostick mediated zinc phosphate hybrid coating modified Zn biodegradable metal to fulfill such a balanced osteogenicity. The in vitro assays verified the coated Zn demonstrated outstanding pro-osteoblasts and anti-osteoclasts properties and the coated intramedullary nail promoted fracture healing well in an osteoporotic femur fracture rat model. Our strategy may offer not only a new avenue for surface modification of biodegradable metals but also shed light on better understanding of new advanced biomaterials for orthopedic application among others.
研究领域:
生物材料
·
生物医学工程
·
骨科
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）