NEW JOURNAL OF CHEMISTRY
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2022
·Vol. 46
·期 48
·23386-23393
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IF 3.925
Zhongmin Feng,Chuanyu Zhu,Yupu Meng,Zhuqing Wang
Poly(m-phenylenediamine) has a wide range of applications in adsorption due to its high amino content; however, its nanoparticles tend to aggregate in water and are not easily separated from aqueous solutions. In this research, a soft and easily separable adsorbent material was successfully prepared by cross-linking poly(m-phenylenediamine) and chitosan through hydrogen bonding. Experimental results showed that the prepared chitosan and poly(m-phenylenediamine) hybrid membrane (CS/PmPD) could selectively reduce Au(III) from a mixture of multiple metal ions (Cu2+, Zn2+, Ni2+, Cd2+, and Au(III)). The maximum treatment capacity of Au(III) reached 410 mg g−1 under optimal adsorption conditions (pH = 3.0 and adsorption time of 120 min). The CS/PmPD membrane can be regnerated after rinsing with sodium bisulfite solution, and its performance remains stable after multiple cycles. In addition, the membrane has achieved satisfactory results in treating the actual CPU gold-containing leachate. Therefore, the CS/PmPD membrane has a promising application in gold recovery from electronic wastes.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
npj Clean Water
·
2024
·Vol. 7
·期 1
·1-10
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IF 10.4
Zhang Hongjie,Geng Wenjing,Cai Yifei,Huo Jiaqi,Zang Yipeng,Chen Cheng
Eliminating antibiotics from wastewater remains a critical challenge. This work introduces durable, high-performance adsorptive membranes formed by polymerizing tannic acid (TA) and Fe 3+ ions on commercial substrates, known as TA-Fe, to enhance antibiotic removal. Using a filtration process, the TA-Fe modified membrane (MCM) demonstrated excellent ciprofloxacin hydrochloride removal efficiency, permeance, and reusability. The MCM achieved high removal capability for antibiotics, with a permeance of 3815 L m −2 h −1 bar −1 and 96.7% removal efficiency within 1.3 min—115 times faster than traditional methods. Furthermore, the MCM sustained an impressive adsorptive capacity of 99.4% even after 10 consecutive cycles. This work profoundly progresses the domain of adsorptive membrane technology, offering a promising avenue for the sustainable adsorption and separation of antibiotics from contaminated wastewater.
研究领域:
环境科学
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材料科学
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水处理工程
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DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Honghe Song,Haiyan Zhu,Rui Wang,Shumei Wen,Chenghu Yan,Wei Cong
We propose a facile method for preparing polyvinylidene fluoride (PVDF) membranes with exceptional selectivity for rare earth ions and stability by UV irradiation technology using 3,3′, 4,4′-benzophenone tetracarboxylic acid (BTA) as the grafted materials. The grafting of BTA onto the membrane surface was confirmed through Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The selection factors of PVDF- g -BTA membranes for Dy 3+ over Na + , K + , Ca 2+ , and Mg 2+ were 140.57, 114.16, 74.23, and 86.25, respectively. The adsorption capacity of the PVDF- g -BTA membranes remained above 80 % following five adsorption–desorption cycles, and the contact angle remained stable throughout the 30 days of immersion.
研究领域:
材料科学
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环境工程
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DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
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2022
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IF 4.119
Zhongmin Feng,Chuanyu Zhu,Yupu Meng,Zhuqing Wang
A non-solvent-induced phase separation method was used to synthesize easily separable membrane materials from polyether sulfone and polym-phenylenediamine to achieve selective recovery of Au from e-waste solutions. The optimum conditions, adsorption capacity, and selectivity of the polyether sulfone/polym-phenylenediamine membrane were investigated by adsorption experiments. The maximum adsorption capacity of the PES/PmPD membrane to Au(III) within 4 h at 30 °C with optimal pH of 1 was 582.75 mg/g. The adsorption process follows the quasi-second-order adsorption isotherm. The adsorption agent was characterized by XPS and XRD to understand the recovery mechanism of Au(III) by PES/PmPD membrane. In addition, PES/PmPD membranes were single-selective for Au(III) in a variety of natural water bodies and highly acidic conditions. Therefore, the thin membrane material has great potential for recycling Au(III) from waste e-waste.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
RSC Advances
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2022
·Vol. 12
·期 15
·9077-9086
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IF 4.036
Quan Hongping,Zhen Xuele,Lu Qiangying,Wang Linyuan,Jiang Silong
Acidizing retarders are used to reduce the reaction rate between hydrochloric acid (HCl) and carbonates to increase the efficiency of acidification of oil and gas wells and increase oil and gas recovery. We synthesized two polymeric acidizing retarders (AR-1 and AR-2) to explore ways to improve the efficiency of this process. Retarder AR-1 is based on acrylamide (AM) and allyl polyethylene glycol (APEG-1000), and retarder AR-2 is composed of AM, APEG-1000, and octadecyl dimethyl allyl ammonium chloride (C-18). The molecular structures of AR-1 and AR-2 were characterized by Fourier transform infrared (FT-IR) and 1H nuclear magnetic resonance (1H-NMR). The retarding performance and acid–rock reaction rates of AR-1 and AR-2 were evaluated, and the experimental results indicated that AR-2 had a better retarding performance than AR-1, and the acid–rock reaction rate of AR-1 was higher than AR-2. This could be because AR-2 with its hydrophobic chains forms a thicker adsorbed film. This was confirmed by X-ray photoelectron spectroscopy (XPS) and adsorption behavior studies. The scanning electron microscope (SEM) images, contact angle, and XPS results showed that both retarders form adsorption films on the surface of rocks, indicating that the introduction of AM and APEG-1000 makes the retarder adsorb on rock surfaces. The introduction of hydrophobic chains for AR-2 enhanced the thickness of adsorbed film, indicating that adding hydrophobic chains to the acidizing retarder significantly improves its retarding performance.
研究领域:
石油工程
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化学工程
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2021
·
IF 7.312
Jinchao Fang,Yuji Chen,Chuanjie Fang,Liping Zhu
In this work, we report on a regenerable and robust adsorptive membrane with superb dynamic adsorption capacity towards dyes prepared by a controllable mussel-inspired co-deposition of dopamine (DA) and polyethyleneimine (PEI) on a polyvinylidene fluoride (PVDF) microfiltration membrane. The DA oxidative self-polymerization occurred to form polydopamine for high adhesion with the PVDF membrane. On the other hand, the PEI provided a large number of amino groups with high adsorption ability, and had both Michael addition and Schiff base reaction with DA to induce covalent interaction for high stability. In addition, the co-deposition process was controlled to happen on the membrane surface and inside the membrane bulk pores simultaneously. By these ingenious designs, the prepared adsorptive membrane thus showed high dynamic adsorption capacity (up to 188 mg g −1 ) and ultra-high removal ratio (＞99.9%) towards typical anionic dye of methyl blue. Not only that, the membrane could separate rapidly and selectively anionic dyes from dye mixtures. More importantly, the adsorptive membrane showed highly regenerative ability in NaOH solution (after 6 recovery cycles, the treating efficiency maintained higher than 95%), and good durability with robust resistance in acidic and alkaline environments. This work affords an innovative strategy and insight in fabricating the adsorptive membrane using mussel-inspired co-deposition for organic dye removal in water.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
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2023
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IF 2.3
Jiajia Zhu,Mengyue Zhu,Renhui Zhang,Zhongyi He,Liping Xiong,Lei Guo
Carbon dots (CDs) are spherical zero-dimensional carbon nanomaterials, generally below 10 nm in size, which have received increasing attention in the field of corrosion because of various advantages such as good water solubility, abundant raw materials, and environmental protection. In this work, water-soluble carbon dots (CDs) with particle sizes of 5–10 nm are obtained by electrochemical oxidation with anhydrous ethanol. FTIR, Raman, UV–Vis, XPS, and TEM are used to characterize the obtained CDs, and electrochemical tests are used to investigate the anti-corrosion performance of the CDs. The results reveal that the corrosion inhibition performance increased with the addition of CDs, and the highest corrosion inhibition efficiency reaches 98% when the addition amount is 200 mg/L. Moreover, the inhibition mechanism for CDs needs to be further investigated, and the stable adsorption of CDs on carbon steel to form adsorption film may be the key factor for its good corrosion inhibition performance.
研究领域:
材料科学
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腐蚀与防护
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纳米技术
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DOI
高影响因子
STAR Protocols
·
2023
·
IF 0
Yu Wang,Taoyang Wang,Mengyue Wang,Xiaoling Wang,Junling Guo
Summary Traditional techniques for pollutant removal (e.g., static absorption and membrane nanofiltration) are either time consuming or energy intensive with limited permeances. Here, we demonstrate a protocol to fabricate polyamide (PA)-based regenerable adsorption-based membranes (PA rab ) for ultrafast removal of antibiotics. This protocol describes how to determine the distribution of nanocoatings through the membrane. We also detail the antibiotics removal performance and the regeneration tests. For complete details on the use and execution of this protocol, please refer to Wang et al. (2023). 1
研究领域:
环境科学
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材料科学
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DOI
PubMed
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Zhu Xiong,Yuhang Cheng,Kaige Dong,Mahmud Sakil,Zhu Wang,Liguo Zhang,Tangfu Xiao,Gaosheng Zhang,Shuaifei Zhao
Super trace thallium(I) (Tl + ) is still highly toxic and its removal from surface water is challenging. Here, we developed a new adsorptive membrane by immobilizing bimetal (cobalt and iron) Prussian blue analogues (Co@Fe-PBAs) on a polytetrafluoroethylene microporous membrane (Co@Fe-PBAs-M). The prepared membrane displayed precise adsorption of trace Tl + (50 μg/L) from complex water. A variety of interfering factors, such as water pH, competitive adsorption of positive ions (Na + and K + ) and negative ions (CO 3 2– and PO 4 3- ), natural organic matters (e.g., fulvic acid and bovine serum albumin) were evaluated during Tl removal. The composite membrane showed high removal efficiency (over 80 %) during long-term dynamic membrane separation of surface water containing super trace Tl + (<2.0 μg/L), breaking through the adsorption limitation in ultralow concentration of Tl + . The unique bimetal electron transfer of Co@Fe-PBAs-M reinforced the adsorptive performance to Tl + through dual ion exchange and intercalation. In the treatment of real Pearl River water containing 0.5 μg/L of Tl + , our membrane effectively reduced the Tl + concentration to 0.04 μg/L during 6-h continuous separation, which was far below the required level for drinking water (i.e., 0.1 μg/L). This work offers a promising solution for safe drinking water by remedying ultralow Tl + contaminated surface water.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
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IF 5.091
Xuan Zhang,Xiaofeng Fang,Jiansheng Li,Shunlong Pan,Xiuyun Sun,Jinyou Shen,Weiqing Han,Lianjun Wang,Shuaifei Zhao
Arsenic-contaminated water has significant adverse impacts on human health and ecosystems. We developed a new adsorptive membrane by modifying the porous support layer of a phase inversion formed membrane for arsenic removal. Iron oxide (Fe 3 O 4 ) microspheres were immobilized in the support layer of the membrane by reverse filtration, followed by dopamine polymerization. The prepared adsorptive membrane was compared with a virgin membrane without Fe 3 O 4 microspheres and a Fe 3 O 4 blended membrane in terms of membrane structures and separation performance. The adsorptive membrane prepared by our new method had comparable water permeability and rejection performance with the virgin membrane without Fe 3 O 4 microspheres, but higher rejection performance and dynamic adsorption capacity than the membrane prepared by the conventional blending method. Both static and dynamic adsorption modes were used to evaluate the adsorption performance of the membranes. Our new adsorptive membrane also had excellent regeneration performance. After three regeneration cycles, the membrane was still capable of treating more than 2 tons of As-contaminated water/m 2 . The adsorptive membrane of 1 m 2 could treat over 7 tons of water to the drinking water standard in terms of arsenic concentration during three regeneration cycles. Therefore, our adsorptive membrane may pave a new way for arsenic removal from water and ensuring drinking water security.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Rui Zhang,Yahong Li,Bo Meng,Yuan Liu,Jianxian Zeng,Guangyong Weng,Houchao Shan,Di Cai,Xiaoping Huang,Lin Jin
Palladium (Pd) recovery from secondary resources is urgently needed to meet the rising demands for precious metals for sustainable development and environmental protection. To achieve the goal of simple, efficient, and selective recovery of precious metal Pd, we reported an innovative strategy that utilized a double-layer adsorptive membrane based on polydopamine (PDA) modification and polymethacryloxyethyltrimethyl ammonium chloride (PDMC) grafting. The adsorption results suggested that the adsorptive membrane exhibited an excellent adsorption capacity of 61.5 mg g −1 towards Pd(II) at pH 2.0 and the adsorption capacity remained stable after six cycles. Moreover, the adsorption processes of Pd(II) were fitted to pseudo second-order kinetic models and the Langmuir isotherm models. Density functional theory (DFT) simulation, and FTIR, XPS analysis indicated the adsorption mechanisms were ion exchange from the PDMC layer and chelation and ion exchange from the PDA layer. In the presence of other metal ions (Ni(II), Cu(II), Zn(II), Ca(II), Mg(II), K(I) and Na(I)), the separation factor of adsorptive membrane for Pd(II) was in the range of 50–529. The remarkable selectivity was due to the mechanism of the combination of electrostatic attraction and coordination interaction to Pd(II) while the electrostatic repulsion to other metal cations. Furthermore, membrane filtration results suggested that Pd(II) was effectively adsorbed and rejected and the leakage risk could be reduced by dual adsorption from the double-layer membrane. This study not only offers an innovative strategy to precisely and effectively recover Pd(II) and other platinum group metals, but also provides valuable insights for the future implementation of adsorptive membranes in recycling low-concentration wastewater in an efficient and friendly way.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
TRIBOLOGY LETTERS
·
2019
·Vol. 67
·期 2
·1-14
·
IF 2.235
Yang Ye,Zhang Chenhui,Dai Yuanjing,Luo Jianbin
Effective water-based lubricants for titanium alloys have been investigated. The results reveal that castor oil sulfated sodium salt (CSS) solution can decrease the friction coefficient and adhesive wear compared with water, polyalkylene glycol (PAG) aqueous solution, or castor oil. The surface morphology of the tested discs and balls were measured, and the mechanism investigated. The rubbing surface was analyzed by using time-of-flight secondary-ion mass spectrometry (ToF–SIMS), indicating that a layer of physically adsorbed film remained on the surface, the main ingredient of which was CSS molecules. The mass and morphology of the adsorbed film were explored by quartz crystal microbalance measurements with dissipation monitoring and atom force microscopy, respectively. An electrical voltage, which could change the electrostatic force of the lubricants with the metal surface, was then applied to the frictional pair to explore the mechanism driving the adsorption. The physically adsorbed film played an important role in lubrication. The results of this study indicate that CSS could represent a good water-based lubricant base stock for the design of cutting fluids for titanium alloys.
研究领域:
材料科学
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表面工程
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产品关联
DOI
高影响因子
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