PROGRESS IN ORGANIC COATINGS
·
2021
·
IF 5.161
Shupei Liu,Chijia Wang,Kaka Li,Zihua Wang,Hongxin Luo,Weihao Fan,Huaiyuan Wang
Anti-scaling is a key challenge in various industrial productions. The use of coatings is the most effective strategy for protecting metal equipment. An excellent scale inhibitor is 1-hydroxy ethylidene-1, 1-diphosphate (etidronic acid) (HEDP), which is usually incorporated into wastewater and discharged directly with the water flow. In this study, HEDP was coated with poly-α-ethyl cyanoacrylate (PEC) by a simple spray method. The corresponding slow-release microcapsules, which we named PEC&HEDP, were successfully prepared. In addition, a correct mass of the microcapsules was added to the spray polyurea elastomer (SPUA) coating. The resulting SPUA/PEC&HEDP 70&30 composite coating exhibited excellent anti-corrosion and scale-inhibiting effects. Electrochemical impedance spectroscopy and salt spray corrosion test were used to assess the corrosion resistance of the coating. The results showed that the barrier performance of the composite coating improved significantly. In addition, the scale inhibition performance of the composite coating was tested in a supersaturated CaCO 3 solution. The results showed that the scale inhibition rate of the composite coating was higher by as much as 80.5% relative to the pure SPUA coating. This work provides a new and simple method for designing and preparing a slow-release microcapsule composite coating intended for scale control.
研究领域:
材料科学
·
腐蚀与防护
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Ziqiang Wang,Guanghui Yang,Pengjun Tian,Xinmiao Li,Kai Deng,Hongjie Yu,You Xu,Hongjing Wang,Liang Wang
The use of thermodynamically more favorable sulfion oxidation reaction (SOR) to replace sluggish oxygen evolution reaction is an effective method for energy-saving production of hydrogen. Herein, we propose the synthesis of organic–inorganic hybrid through the modification of 1-hydroxyethylidene-1,1-diphosphonic acid on Rh metallene (HEDP-Rh metallene) as a bifunctional electrocatalyst for hydrogen evolution reaction (HER) and SOR. The modification of hydrophilic HEDP can effectively promote the water adsorption, thereby accelerating the mass/electron transfer at the interface. The HEDP-Rh metallene requires low overpotentials of 30 mV at 10 mA cm −2 for HER and 0.538 V at 100 mA cm −2 for SOR. In HER-SOR coupled reaction, HEDP-Rh metallene drives the current density of 100 mA cm −2 at 1.08 V for concurrent production of hydrogen and sulfur, highlighting energy-efficient hydrogen production and sulfur recycle.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Cong Liu,Shifang Ye,Wenyan Yang,Shixiang Zhou,Jiading Zhu,Jiantao Cai,Zhe Xin,Peizhong Feng,Litong Guo,Shiwang Ye,Zhen Wu,Jun Ding,Xueyu Tao
Conductive polymer hydrogels for flexible supercapacitors usually contain nonconductive matrices (e.g., PVA, PAM), which hinder the electrochemical performance. This work presents a matrix-free strategy via supramolecular self-assembly, utilizing HEDP as a dual-functional dopant/cross-linker and lignosulfonate (LS) as a redox-active template. The incorporation of LS optimizes the nanostructure for faster ion transport while simultaneously contributing additional pseudocapacitance via quinone/hydroquinone redox couples. This supramolecularly assembled PANI/HEDP/LS (PHL) hydrogel demonstrates significant electrochemical advantages. At 0.5 A g–1, the PHL9 hydrogel electrode delivered a specific capacitance of 625 F g–1, exceeding that of the original PHL0 hydrogel without redox additives (419 F g–1). The PHL9 hydrogel electrode also exhibited an electrical conductivity of 86.51 S m–1, while maintaining stable cycling performance after 10,000 charge/discharge cycles (76.51% retention) and good flexibility, as 92.64% of the capacitance was still preserved after 200 bending cycles. All-hydrogel-state flexible supercapacitors (FSCs) constructed with PHL9 composite hydrogel electrodes delivered an energy density of 22.5 Wh kg–1 at a power density of 125 W kg–1, surpassing that of PHL0-based FSCs (16.2 Wh kg–1). Moreover, the device further maintained 80.75% of its initial capacitance after 10,000 charge/discharge cycles, indicating reliable long-term stability. Overall, these results indicate that the proposed strategy provides an effective route for developing high-performance composite hydrogel electrodes in wearable and flexible energy storage applications.
✓ 已验证
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2024
·
IF 4.9
Min Yu,Xiang Gao,Kanglu Feng,Juan Qiu,Chunchao Chen,Kangwei Gongsun,Changming Bu,Qing Zang,Zhaoyu Mao,Houyi Ma
The weak binding ability of silane to copper surfaces restricts its use in copper anticorrosion. In this study, the P–OH groups in etidronic acid (HEDP) were utilized to establish chemical bonds with copper and to react with 3-mercaptopropyltrimethoxysilane (PropS-SH), serving as a bridging mechanism to enhance the anchoring of silane onto copper surfaces. Moreover, the presence of HEDP promoted the condensation of silane, leading to the formation of a denser and thicker film with outstanding corrosion resistance. SEM results indicated that the thickness of the PropS-SH/HEDP film was about 125 nm, and defects at the copper–film interface were repaired. Electrochemical tests demonstrated that the PropS-SH/HEDP film exhibited remarkable corrosion resistance, achieving an anticorrosion efficiency of 99.95 %. Immersion testing showed that the PropS-SH/HEDP film was capable of withstanding immersion in a 3.5 wt% NaCl solution for 10 days, displaying a durability 5 times greater than that of the standalone silane film.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
BioNanoScience
·
2026
·Vol. 16
·期 5
·335
·
IF 4
Ming Hui,Li Xuefeng,Sha Zhentao,Xiang Yuhe,Liu Yi,Li Yang,Wu Mei
To address the short effective duration of conventional scale inhibitors in mature oilfields, hydroxyethyl diphosphonic acid (HEDP) / Methyl methacrylate (PMMA) submicron capsule were engineered via reverse microemulsion evaporation for sustained release. Optimized synthesis (core-wall ratio 1:6, Span80/W ratio 1:2, 3.5 h curing) achieved 95.3% encapsulation efficiency. The submicron capsule maintained 70–90% scale inhibition efficiency against CaCO₃ over 8 h. Flow tests demonstrated exceptional retention: submicron capsule withstood > 860 pore volumes (PV) before breakthrough, outperforming liquid inhibitors (160 PV) by 5.4-fold. Pretreatment with Cetyltrimethylammonium(CTAB) bromide further enhanced adsorption. Crucially, mechanistic studies revealed surface charge (zeta potential) as the dominant retention controller, while particle size showed negligible influence. This study proposes a surface-charge-dominated retention strategy for long-term scale inhibition in oilfields, which may contribute to more sustained scale control.
✓ 已验证
DOI
高影响因子
Journal of Cleaner Production
·
2021
·
IF 9.297
Huanyu Zhu,Bingqiao Yang,Jinchan Feng,Feifei Jia
In this work, an environment-friendly sphalerite depressant 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) was exploited in the flotation separation of sphalerite and galena . The flotation performances of sphalerite and galena treated by HEDP were investigated by mineral flotation tests. The depression mechanisms of HEDP on sphalerite were investigated by various characterization techniques such as zeta potential tests, Fourier Transform Infrared Spectrometer (FTIR), X-ray Photoelectron Spectroscopy (XPS) analysis, Time of Flight Secondary Ion Mass Spectrometry (ToF-SIMS) and density functional theory (DFT) calculation. Flotation tests showed that HEDP selectively depressed sphalerite but almost did not influence the flotation of galena in sodium isobutyl xanthate (SIBX) system, which achieved effective flotation separation results. zeta potential tests and FTIR results proved the preferential adsorption of HEDP on sphalerite surface, but the pre-adsorbed of HEDP on galena could be replaced by SIBX easily. XPS, ToF-SIMS analysis and DFT calculation demonstrated that HEDP was coordinated with Zn atom through two different phosphonic acid group, forming a six membered chelating ring.
研究领域:
矿物加工工程
·
环境科学
·
材料化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHARACTERIZATION
·
2026
·
IF 5.5
Chun Yang,Bingtai Wen,Huijuan Shi,Xixi Wang,Zhiying Wang,Yixin Luo,Ke Xiao,Junfeng Wang,Xiaowei Fan,Ning Song,Yuhui Tan,Yunzhi Tang
Copper‑silver (Cu Ag) alloy foil has become a key material in the electronics and electrical sectors owing to its high electrical conductivity, excellent thermal dissipation properties, and favorable mechanical characteristics. To overcome the inherent trade-off between strength and conductivity in pure copper foil, this study employed a cyanide-free pyrophosphate-hydroxyethylidene diphosphonic acid (HEDP) mixed-ligand electrolyte to fabricate Cu Ag alloy foils with an ultrafine-grained structure via the electrodeposition method. An orthogonal experimental design was employed to optimize the process, and the effects of silver alloying and current density on the microstructure, mechanical properties, electrical conductivity, and corrosion behavior were systematically investigated. Research indicates that at pH = 10, temperature = 40 °C, and a current density of 0.7 A·dm −2 , alloy foil containing 8.78 wt% silver exhibits an ultra-high tensile strength of 1148 MPa, electrical conductivity of 71.8% IACS, and outstanding corrosion resistance. This is attributable to the addition of silver, which significantly refines the grain structure, suppresses twinning formation, promotes strong Cu(220) texture, and enhances surface smoothness and hydrophobicity. Microstructural analysis confirms a supersaturated solid solution with nanoscale Ag-rich second-phase particles. The ultra-high strength arises from the synergistic effects of grain refinement and solid solution strengthening. Electrochemical analysis indicates that the co-deposition is a diffusion-controlled, irreversible process following a three-dimensional instantaneous nucleation mechanism, as indicated by chronoamperometry fitted with the Scharifker-Hills model. This work provides a viable fabrication route and theoretical foundation for developing cyanide-free copper-based alloy foils with high strength, high conductivity, and excellent surface quality.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
·
2025
·
IF 6.7
Yuanyuan Wang,Chong Huang,Haixu Wu,Jeng Yi Chong,Ping Zhang
Mineral scaling poses major operational challenges in water-transporting systems across various industries, leading to substantial economic losses globally. Scale inhibitors are specialty chemical agents with functional groups to prevent or interfere with scale formation. Traditionally, scale inhibitors are introduced into water-transporting systems through continuous injection. However, this approach is limited by its short protection duration and reliance on continuous inhibitor injection, which results in high capital and operating costs, as well as increased chemical waste. To address this issue, this study synthesized cement-based controlled release beads (CRBs) loaded with 1-hydroxyethylidene-1,1-diphosphonic acid (HEDP) scale inhibitor for scale control. The release performance of HEDP from the CRBs was systematically evaluated through static batch and dynamic column experiments. Quartz crystal microbalance with dissipation monitoring (QCM-D) and turbidity tests confirmed the effectiveness of the CRBs in inhibiting BaSO 4 scale formation. Batch experiments demonstrated that increasing CRB size and lowering the temperature could reduce the release rate of HEDP while prolonging the release duration, without changing the total amount of HEDP released. Dynamic column experiments revealed that higher temperatures resulted in higher peak concentrations of HEDP and earlier peak occurrences, while increasing flow velocity shifted the release curves slightly backward and shortened the overall release time. The presence of Ca 2+ and HCO 3 − ions had no noticeable effect on the dynamic release behavior. These findings deepen our understanding of the release mechanisms of scale inhibitors from cement-based CRBs and highlight their potential as an innovative and sustainable solution for long-term scaling control in water-transporting systems.
研究领域:
水处理
·
材料科学
·
化学工程
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL ENGINEERING SCIENCE
·
2022
·Vol. 39
·期 7
·628-638
·
IF 2.172
Qian Rao,Dandan Lv,Hui-qiang Li,Qin Long
The increasing of 1-hydroxy-1,1-diphosphonoethane (HEDP) in aquatic environments poses potential harm to the environment. Herein, the materials that silver nanoparticles/nanowires (Ag NPs/Ag NWs) and Fe3O4-decorated CoAl-layered double hydroxides (LDHs-Ag NPs@Fe3O4 and LDHs-Ag NWs@Fe3O4) were synthesized and applied to the degradation of HEDP in three-dimensional electro-Fenton system. Addition of Ag-doped LDHs@Fe3O4 particles greatly increased the HEDP removal rate compared with the addition of LDHs@Fe3O4 particles. The HEDP degradation rates using LDHs-Ag NPs@Fe3O4 and LDHs-Ag NWs@Fe3O4 particles were 73.34% and 79.64%. Furthermore, based on the characterization of synthesized particles, generation of free radical and H2O2, a possible mechanism of improved oxidation performance by the LDHs-Ag NWs@Fe3O4 particles was elucidated. The LDHs-Ag NWs@Fe3O4 particles possessed excellent stability and reusability, as evidenced by the stable degradation activity of 70.53% for HEDP degradation after four successive runs.
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
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
Journal of Macromolecular Science Part B-Physics
·
2026
·
IF 1.7
Xinyi Wan,Mengmeng Xiong
Flexible wearable strain sensors that accurately capture joint motion are essential for rehabilitation assessment, motion monitoring, and human–machine interaction. However, conventional hydrogel sensors often suffer from limited mechanical robustness, poor durability, insufficient conductivity, or biocompatibility concerns caused by conductive fillers and chemical crosslinkers. Here, we report a multifunctional biocompatible hydrogel strain sensor, PCH, constructed from a polyvinyl alcohol/chitosan (PVA/CS) double-network matrix, hydroxyl ethylidene diphosphonic acid (HEDP)-mediated dynamic coordination crosslinking, and potassium chloride (KCl)-based ion conduction. FTIR analysis confirms the formation of a hybrid PVA/CS–HEDP network stabilized by hydrogen bonding and phosphonate-associated interactions, contributing to enhanced mechanical integrity. The PCH hydrogel exhibits favorable tensile properties, stable cyclic loading–unloading behavior, and reliable durability. Electromechanical tests show a linear and sensitive strain response with a gauge factor of 0.84 and high linearity (R2 = 0.9976). In joint mobility monitoring, PCH generates precise angle-dependent signals during ±90° wrist bending and maintains stable output under continuous bidirectional motion. It also shows repeatable finger-joint sensing performance and favorable cytocompatibility, hemocompatibility, and skin compatibility, demonstrating strong potential for real-time wearable joint monitoring.
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 11
·17156-17163
·
IF 0
Zhu Meng,Zhu Jinglin,Peng Juanjuan,Zhang Bingliang,Liu Shaomin
Phosphonates have received a widespread attention in wastewater treatment due to their potential threat to the water environment. Advanced oxidation processes (AOPs) are feasible methods to degrade phosphonates, and most of the coexisting substances in water show a negative factor during their oxidation. However, the effect of bromide (Br − ) on the degradation of phosphonates in peroxymonosulfate (PMS) activation is still unclear. Herein, using 1-hydroxyethane 1,1-diphosphonic acid (HEDP) as a target phosphonate, Br − could remarkably enhance the degradation of HEDP in PMS activation compared to the PMS alone. Under the condition of pH = 7.0, the optimal degradation efficiency of HEDP is 84.8% in the PMS/Br − process after 30-min reaction, whereas no significant oxidation is obtained in the PMS/I − and PMS/Cl − processes. Multiple experiments (i.e., electron paramagnetic resonance (EPR), radical quenching experiments and chemical probs) confirm that free bromine, SO 4 •− and HO• paly a minor role in HEDP removal, and bromine radical species make a dominant responsible for HEDP oxidation. Additionally, NO 3 − , SO 4 2− , Cl − , and HCO 3 − have a little effect on the degradation of HEDP, but the HEDP removal is greatly inhibited in the presence of humic acid (HA). However, the degradation efficiency of HEDP using PMS/Br − process in river and sewage is a much higher than UV/persulfate (PDS) and UV/H 2 O 2 processes. This study provides a new sight into the effect of Br − on the degradation phosphonates in PMS activation process.
研究领域:
环境化学
·
水处理
·
化学工程
·
环境科学
✓ 已验证
DOI
危险品化学品经营许可证（带存储）