DESALINATION
·
2025
·
IF 9.8
Shengxing Yang,Chunpei Yan,Bin Huang,Tianxiang Jin,Dingge Guo,Minnan Xiao,Yong Qian
Nuclear energy is an essential part of the global energy mix, and its sustainable development relies on efficient and selective uranium extraction technologies. This study presents a 2-phosphonate butane 1, 2, 4-tricarboxylic acid (PBTCA)-modified self-crosslinked chitosan gel as a novel adsorbent for uranium extraction from wastewater. At an optimized voltage of −0.6 V, the material exhibited an impressive adsorption capacity of 631.94 mg·g −1 , along with excellent electrochemical performance and cycling stability. This innovative material, characterized by low energy consumption, high adsorption efficiency, and excellent regeneration capability, provides a promising solution for uranium recovery. This work highlights the potential of targeted chemical modifications in enhancing polymer-based electrosorption technologies.
研究领域:
材料科学
·
环境科学
·
核能技术
✓ 已验证
产品关联
DOI
高影响因子
MINERALS ENGINEERING
·
2021
·
IF 4.765
Xun Wang,Jie Liu,Yimin Zhu,Yanjun Li
Cassiterite is the most purist tin-containing mineral and plays a dominative role in the tin resources. Owing to the limited selectivity of conventional collectors, the efficient separation of cassiterite from fluorite is normally difficult. Herein, 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) was employed as an eco-friendly depressant to selectively depress the flotation of fluorite. The flotation experiments were conducted to evaluate the separation efficiency of the two minerals, and the results showed that cassiterite and fluorite could be efficiently separated at the flotation reagent scheme of 15 mg/L PBTCA and 20 mg/L NaOL when pH was 8.04. Furthermore, a series of detection and simulation technologies including wettability analysis, zeta potential measurement, FTIR analysis, XPS analysis and DFT calculation were performed to uncover the underlying adsorption and depression mechanism of PBTCA on cassiterite and fluorite. These further analyses indicated that PBTCA could be chemisorbed on the fluorite surface through the interaction between the phosphate group in PBTCA and the calcium sites in fluorite. Moreover, the adsorption of PBTCA on fluorite surface would intensively inhibit the adsorption of NaOL. However, PBTCA was only weakly adsorbed on the cassiterite surface and could not affect the interaction between NaOL and cassiterite. Finally, a most likely adsorption model of PBTCA onto fluorite surface with the “mono-polar group” interaction was proposed by DFT calculations.
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
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Le Zhai,Xueli Yang,Liunan She,Yingqi Di,Guofeng Pan,Jie Cheng
The chemical mechanical polishing (CMP) process for the titanium (Ti) barrier layer in Through-Silicon Via (TSV) technology is crucial for the fabrication of advanced 3D and 2.5D integrated circuit (IC) chip packaging. A major challenge in this process is achieving a high Ti removal rate while carefully optimizing the selectivity ratio between Ti and copper (Cu). This study rationally selected 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) as a complexing agent and α-benzoin oxime (ABO) as a corrosion inhibitor in CMP for TSV Ti-based barrier layers. A combined experimental and theoretical approach was used to explore the CMP effects of the two reagents. The experimental results demonstrate that PBTCA significantly enhances the Ti removal rate, while the adsorption of ABO on the Cu surface mitigates the corrosion caused by PBTCA and effectively improved the surface quality of both Cu and Ti. Density Functional Theory (DFT) calculations were performed to analyze the interaction between PBTCA and ABO molecules at the atomic level. This study presents an effective method for removing Ti barrier layers from TSV by using PBTCA and ABO synergistically, providing a practical and effective solution for barrier layer CMP in advanced IC packaging applications.
研究领域:
微电子学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2023
·Vol. 332
·期 12
·5007-5016
·
IF 1.6
Wang Weiran,Wang Zhifeng
Modified chitosan-coated nickel ferrite silica nanoparticles were prepared, characterized and experimented for the removal of U(VI). Adsorption amount was 125.30 mg g −1 at pH 5.0. The magnetic chitosan based composite could be successfully recycled from uranium aqueous phase. Finally, calculated data and analysis suggested that the adsorption behaviors of magnetic chitosan based nanoparticles can be explained by pseudo-second order kinetic model ( R 2 = 0.9915), which suggested the adsorption process was probably controlled by chemical adsorption, and langmuir model ( R 2 = 0.9816), which suggested the adsorption process was probably controlled by single-layer adsorption.
研究领域:
环境科学
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纳米技术
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材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Jinchan Feng,Bingqiao Yang,Huanyu Zhu,Hanquan Zhang,Mengyuan Zeng
In this work, 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) was explored as a novel sphalerite depressant in the selective flotation of galena from sphalerite. The separation performances were investigated by single and synthetic flotation tests. The depression mechanism was examined by Fourier Transform Infrared spectroscopy (FTIR), zeta potential and X-ray Photoelectron Spectroscopy (XPS) analysis. The flotation test results showed that PBTCA was an effective sphalerite depressant with good selectivity at broad pH range, which could achieve satisfactory separation results. Zeta potential and FTIR results indicated that PBTCA was more prone to adsorb on sphalerite surface than that of galena. In addition, SIBX could replace adsorbed PBTCA on the galena surface while it was impossible to substitute that on the sphalerite surface, which rendered sphalerite surface hydrophilic and enlarged the floatability difference. XPS analysis manifested that PBTCA was adsorbed on sphalerite surface through the strong complexation between carboxyl, phosphonic acid groups and Zn sites on sphalerite surface, forming C-O-Zn or P-O-Zn bond.
研究领域:
矿物加工工程
·
表面化学
✓ 已验证
DOI
高影响因子
Mineral Processing and Extractive Metallurgy Review
·
2020
·
IF 2.785
Zhiyong Gao,Jian Deng,Wei Sun,Jianjun Wang,Yunfeng Liu,Fengping Xu,Qinghong Wang
Scheelite and calcite are usually intergrown calcium minerals that are separated via froth flotation. However, their selective separation remains difficult because of their similar surface properties. 2-phosphonobutane −1, 2, 4-tricarboxylic acid (PBTCA or H5L) is widely used in water treatment due to its low phosphorus content and efficient anti-scaling performance. With its excellent calcium-chelating ability, PBTCA was used as a novel depressant to selectively separate scheelite from calcite in this study. The flotation results of single mineral, binary mixed minerals, and real ore showed that PBTCA could selectively depress calcite at pH 9.0 using sodium oleate as collector. The results of zeta potential measurements, solution chemistry calculation, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and density functional theory calculation indicated that the dominant form of PBTCA was L5-. This anion had a stronger adsorption on negatively charged calcite surfaces through electrostatic interaction. Higher Ca density and stronger Ca activity on calcite promote the adsorption of L5-. Moreover, the active O atoms in L5- could better match with two Ca sites on calcite in the interatom distance. Thus, PBTCA provides a new option for calcite depressants and has great industrial application potential.
研究领域:
矿物加工工程
·
表面化学
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2019
·Vol. 19
·期 6
·3471-3478
·
IF 1.093
Wang Feng,Ge Hong-Hua,Wu Kai,Wang Le-Tian,Wan Chuan,Sha Jun-Yi,Zhao Yu-Zeng
The effects of Al2O3 nanoparticles on the precipitation behavior of CaCO3 and on the anti-scale performance of 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) in CaCO3 growth solution were studied by means of solution analysis, gravimetric
methods, scanning electron microscopy, Fourier transform infrared spectroscopy and X-ray diffraction. The results illustrate that Al2O3 nanoparticles had little effect on the concentration of calcium ions in the test solution without PBTCA, but significantly changed the
form and morphology of calcium carbonate crystals, which were transformed from calcite to aragonite. As a commonly used and effective scale inhibitor, PBTCA showed good Ca2+ retention ability in the test solution, distorting the calcite crystal lattice and promoting the formation
of vaterite. When Al2O3 nanoparticles co-existed with PBTCA in the test solution, calcium carbonate was more likely to precipitate, and the Ca2+ retention ability of PBTCA reduced. A newly designed gravimetric method was used to evaluate the scale inhibition
performance of Al2O3 nanoparticles on the heat exchange surface. When the concentration of Al2O3 nanoparticles reached 1 g/L, the surface scale inhibition efficiency of Al2O3 nanoparticles exceeded 80%.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
APPLIED THERMAL ENGINEERING
·
2019
·
IF 4.026
Le-Tian Wang,Hong-Hua Ge,Yu-Tian Han,Chuan Wan,Jun-Yi Sha,Kun Sheng
The scale inhibition and mechanism of the scale inhibitor PBTCA (2-phosphonobutane-1,2,4-tricarboxylic acid) on CaCO 3 in a scale-forming solution and an Al 2 O 3 nanofluid were investigated by solution scale inhibition, surface scale inhibition, electrical conductivity, scanning electron microscopy, X-ray diffraction, and diffuse reflection Fourier transform infrared spectroscopy. The results showed that PBTCA had good solution scale inhibition performance and surface scale inhibition performance on heat exchange surface in scale-forming solution. In an Al 2 O 3 nanofluid, the solution scale inhibition performance of PBTCA decreased with an increase in nanoparticle concentration. However, the surface scale inhibition performance of PBTCA first decreased and then increased with an increase in Al 2 O 3 nanoparticle concentration, and the surface scale inhibition performance was obviously higher than the solution scale inhibition performance. Al 2 O 3 nanoparticles significantly shortened the induction period of CaCO 3 nucleation in the scale-forming solution containing PBTCA, weakening the solubilization of PBTCA on CaCO 3 and decreasing the solution scale inhibition of PBTCA, whereas Al 2 O 3 nanoparticles promoted the formation of aragonite and exhibited certain surface scale inhibition performances.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Omega
·
2022
·
IF 4.132
Liwei Ma,Guoqiang Li,Youqian Wang,Siqi Chai,Guojie Zhang
Fe2+ complexation wet denitrification technology has become a research hotspot. It is very important to achieve efficient regeneration of the absorbent and increase NO absorption in the Fe2+ complexation system. They are the key to the industrial application of the Fe2+ complexation absorption process. In this paper, 2-phosphonate-butane-1,2,4-tricarboxylic acid and ethylenediamine tetraacetic acid were used as ligands to prepare a composite system for the first time. The characteristics of NO removal were investigated under different temperatures, pHs, Fe2+ concentrations, O2 contents, NO concentrations, CO2 contents, and SO2 concentrations. Compared with the single ligand, the results show that the denitrification performance of the solution with a complex ligand is significantly improved. In this system, pH 9, 40 °C temperature, and 20 mmol/L Fe2+ concentration are the economic ideal conditions for NO removal. The system can realize simultaneous removal of NO and SO2, but SO2 in flue gas has a dual effect on the NO removal reaction.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
WATER RESEARCH
·
2018
·
IF 7.051
Zi-Bin Xu,Wen-Long Wang,Nan Huang,Qian-Yuan Wu,Min-Yong Lee,Hong-Ying Hu
2-Phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) is an antiscalant that is widely used in reverse osmosis (RO) systems. Because of its high concentration in RO concentrate, eutrophication risk and anti-precipitation properties may affect subsequent treatments, therefore treatment strategies are needed to eliminate such substances. In this study, PBTCA was degraded by ozonation . The results show that PBTCA reacted with ozone molecules and hydroxyl radicals , with second-order rate constants of (0.12 ± 0.002) and (7.83 ± 1.51) × 10 8 L mol −1 s −1 , respectively. The phosphorus in PBTCA (P P ) was transformed into organic phosphorus except for PBTCA (P O ), and inorganic phosphorus (P I ); P O was further transformed into P I . The changes in the concentrations of these phosphorus forms were investigated by model simulation. Simulation showed that the rate of P P transformation into P O was 5.5 times higher than that into P I . PBTCA was ozonated much faster at alkaline pH than at acidic pH. This is ascribed to different amounts of ozone molecules and hydroxyl radicals, and their different reaction rates with PBTCA. Furthermore, anti-precipitation property was reduced during ozonation , as shown by the amounts and morphology changes of the precipitates. PBTCA concentration for 50% anti-precipitation (AP 50 ) did not change during ozonation, indicating that the transformation products generated during ozonation did not have anti-precipitation effects. Phosphorus in PBTCA was removed by ozonation–coagulation treatment. Total phosphorus and inorganic phosphorus were removed efficiently by using ferric chloride as a coagulant. The coagulants tended to bind with inorganic phosphorus to form flocs. Meanwhile, flocs were more easily to aggregate and precipitate as anti-precipitation effect was gradually removed, thus more phosphorus was removed. A combination of ozonation and coagulation removed PBTCA effectively and simultaneously reduced its anti-precipitation property and phosphorus.
研究领域:
环境科学
·
水处理工程
·
化学动力学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）