WATER RESEARCH
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2021
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IF 11.236
Jinbin Lin,Jing Zou,Hengyu Cai,Yixin Huang,Jiawen Li,Junyang Xiao,Baoling Yuan,Jun Ma
In this study, a commonly used reducing agent, hydroxylamine (HA), was introduced into Fe(II)/PAA process to improve its oxidation capacity. The HA/Fe(II)/PAA process possessed high oxidation performance for diclofenac degradation even with trace Fe(II) dosage (i.e., 1 μM) at pH of 3.0 to 6.0. Based on electron paramagnetic resonance technology, methyl phenyl sulfoxide (PMSO)-based probe experiments and alcohol quenching experiments, Fe IV O 2+ and carbon-centered radicals (R-O • ) were considered as the primary reactive species responsible for diclofenac elimination. HA accelerated the redox cycle of Fe(III)/Fe(II) and itself was gradually decomposed to N 2 , N 2 O, NO 2 − and NO 3 − , and the environmentally friendly gas of N 2 was considered as the major decomposition product of HA. Four possible degradation pathways of diclofenac were proposed based on seven detected intermediate products. Both elevated dosages of Fe(II) and PAA promoted diclofenac removal. Cl − , HCO 3 − and SO 4 2− had negligible impacts on diclofenac degradation, while humic acid exhibited an inhibitory effect. The oxidation capacity of HA/Fe(II)/PAA process in natural water matrices and its application to degrade various micropollutants were also investigated. This study proposed a promising strategy for improving the Fe(II)/PAA process and highlighted its potential application in water treatment.
研究领域:
环境科学
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水处理技术
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
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IF 9.229
Hao Yang,Baikang Zhu,Lijing Zhu,Zhixiang Zeng,Gang Wang,Zhu Xiong
A photocatalytic membrane with significant degradation and antifouling performance has become an important part in wastewater treatment. However, the low catalyst loading on the polymer membrane limits its performance improvement. Herein, we fabricated poly(vinylidene fluoride) (PVDF) and poly(acrylic acid) (PAA) blend membranes with a rough surface via a vapor-induced phase separation (VIPS) process. Then Fe3+ was cross-linked with the carboxyl groups on the membrane surface and further in situ mineralized into β-FeOOH nanorods. The resultant membranes exhibit not only hydrophilicity and underwater superoleophobicity but also favorable separation efficiency and high water flux in oil-in-water emulsions separation. Under visible light irradiation, the membrane can degrade methylene blue (MB) to 95.2% in 180 min. More importantly, the membrane has a significant photocatalytic self-cleaning ability for crude oil with a flux recovery ratio (FRR) as high as 94.1%. This work brings a new strategy to fabricate the rough and porous surface for high loading of the hydrophilic photo-Fenton catalyst, improving the oil/water emulsion separation and antifouling performance of the membranes.
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
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
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2024
·Vol. 171
·期 5
·050513
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IF 3.1
Haomin Bai,Zhi Zhou,Bo Yang,Wentong Liu,Lili Liu,Jianwu Wen
A multi-functional binder was designed for silicon-based anode lithium-ion battery to alleviate the huge volume expansion of silicon anode during the process of charging and discharging, and to provide ion transport channels to improve the rate performance of electrodes to meet the needs of rapid charging and discharging. In this study, a binder PAA-TUEG which combined the mechanical properties of PAA, the fast self-healing ability provided by the zigzag hydrogen bond in TUEG, and the ion transport ability provided by the ether-oxygen group was synthesized. The effect of different proportion of TUEG binder on the electrochemical performance of the electrode was further investigated. The synthesized PAA-TUEG5% polymer material exhibits a tensilestrength of 0.8 MPa and a fracture elongation of 397%. The Si@PAA-TUEG5% electrode demonstrates reversible capacities of 3035, 2260, and 1249 mAh g−1 at 0.5, 1, and 2 C (1 C = 3500 mAh g−1), respectively. In extended cycling tests, the remaining capacities after 180 cycles at 0.5 and 1 C are 852 and 793 mAh g−1, respectively. This innovative binder, featuring both self-healing ability and enhanced ion transport through dynamic reversible hydrogen bond and ionic bond, presents a promising design concept for the next generation of high-energy-density lithium-ion batteries.
研究领域:
材料科学
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能源存储
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电池技术
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DOI
高影响因子
Journal of Materials Chemistry B
·
2020
·Vol. 8
·期 41
·9589-9600
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IF 5.344
Shuiquan Zhang,Xiaoyu Ma,Dongyong Sha,Jiangchao Qian,Yuan Yuan,Changsheng Liu
The rapid development of nanotechnology has provided new strategies for the treatment of tumors. Nano-scale hydroxyapatite (HAP), as the main component of hard tissues in humans and vertebrates, have been found to specifically inhibit tumor cells. However, achieving controllable synthesis of HAP and endowing it with cancer cell-targeting properties remain enormous challenges. To solve this problem, we developed polyacrylic acid-coordinated hydroxyapatite nanoparticles (HAP–PAA) and further chemically grafted them with folic acid (HAP–PAA-FA) for cancer treatment in this study. The nucleation sites and steric hindrance provided by the PAA greatly inhibited the agglomeration of the nanoparticles, and at the same time, the excess functional groups further modified the surface of nanoparticles to achieve targeting efficiency. The spherical, low-crystallinity HAP–PAA nanoparticles exhibited good tumor cell lethality. After grafting the nanoparticles with folic acid for molecular targeting, their cellular uptake and specific killing ability of tumor cells were further enhanced. The HAP–PAA-FA nanoparticle system exerted a regulatory effect on the tumor microenvironment and had good biological safety. All the above results indicate that this research will broaden the application of hydroxyapatite in tumor treatment.
研究领域:
纳米技术
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癌症治疗
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材料科学
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生物医学工程
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
·
IF 8.1
Zhu Xiong,Zhuoran Yi,Mahmud Sakil,Lei Huang,Zehui Wang,Xueyan Wu,Qingnan Wang,Zhu Wang,Gaosheng Zhang,Wei Zhang,Shuaifei Zhao,Lijing Zhu
To overcome conventional membrane challenges in eliminating natural organic matter (NOM) from natural water, we successfully integrated β -iron hydroxide oxide ( β -FeOOH) nanorods onto a PAA-PVDF blend membrane fabricated from poly(acrylic acid) (PAA) and polyvinylidene fluoride (PVDF).Contact angle assessments with various fluids confirmed the strong organic matter adsorption property of the membrane, with a dispersion component of surface energy at 26.7 mJ/m 2 for β -FeOOH@PAA-PVDF. This membrane consistently removed over 80 % of dissolved organic matter in the cross-flow filtration of water containing 50–150 ppm fulvic acid (FA) under neutral conditions. Such remarkable performance is attributed to the interactions between the Fe-OH groups and the carbonyl (2.960 eV) and phenolic (2.864 eV) groups of FA, overcoming the size sieving limits. Under acidic conditions, zeta potential tests revealed effective ferric coagulation, resulting in over 90 % FA (50 ppm) removal. We thoroughly investigated that common cations (e.g., K + and Ca 2+ ) have impacts on FA removal using β -FeOOH@PAA-PVDF. The used membranes regained nearly original fluxes after washing with trace hydrogen peroxide (H 2 O 2 ) under ultraviolet (UV) light illumination, outperforming traditional washing with sodium hypochlorite (NaClO). Electron spin resonance spectrometry elucidated the cleaning mechanism of β -FeOOH@PAA-PVDF was superoxide anion radical ( O 2 − ) and singlet oxygen ( 1 O 2 ) active species. In summary, β -FeOOH@PAA-PVDF showed a superior adsorption capacity (2200 mg/m 2 ) and efficient photocatalytic degradation towards NOM in natural water, providing an efficient cleaning technology for membrane reuse.
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
PROGRESS IN ORGANIC COATINGS
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2024
·
IF 6.5
Yuhuan Xu,Meng Pei,Xiao Zhan,Jingyu Du,Daohai Zhang
MXene-based materials that effectively deal with harmful electromagnetic waves are attracting more and more attention. In this paper, MXene hydrogels with good properties were prepared using polyvinyl alcohol (PVA) and polyacrylic acid (PAA) to construct a three-dimensional framework for hydrogels, and then adding homemade MXene materials to take advantage of their excellent properties, which resulted in the formation of an electrically conductive framework. The study shows that MXene-10 has a tensile strength of 0.29 MPa and an electrical conductivity of 156.24 S/mm. In addition, electromagnetic shielding (EMI) of 33.6 dB can be achieved when the MXene hydrogel is only 2 mm.
研究领域:
材料科学
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电磁学
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产品关联
DOI
高影响因子
Journal of Water Process Engineering
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2024
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IF 6.3
Yun-fei Zhang,Xin Quan,Sheng-gui Chen,Jian-hui Xu,Dan Li,Lei Li,Si-hao Lv,Jin-ze Li,Yi-hang Zhang,Zhuo-wei Zhong
In this study, silicon nitride-zero-valent iron (Si 3 N 4 -ZVI) powders were obtained through post-milling and employed as a catalyst to activate peracetic acid (PAA) for the removal of Ranitidine (RAN). The system achieved an impressive 90.4 % of degradation efficiency, with a pseudo-first-order kinetic reaction constant 11.3 times higher than that of the ZVI/PAA system. Quenching experiments and Electron Paramagnetic Resonance (EPR) analysis confirmed that both radical and non-radical processes are involved in RAN degradation within the Si 3 N 4 -ZVI/PAA system. Moreover, the identified ten degradation products are less toxic compared to the byproducts from alternative oxidation methods reported by prior literature. The proposed degradation pathway of RAN includes C S cleavage, oxygenation/hydroxylation demethylation, and denitrification. Furthermore, the Si 3 N 4 -ZVI/PAA system showed effectively in treating RAN-contaminated surface water, artificial wastewater, and dissolved organic matter, demonstrating its great ability in treating diverse organic-contaminated water sources. In conclusion, results of this study suggest that the Si 3 N 4 -ZVI/PAA system possess high pollutant removal efficiency, broad applicability, and less environmental and health risks.
研究领域:
环境科学
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水处理工程
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产品关联
DOI
高影响因子
LANGMUIR
·
2026
·
IF 4.4
Zhiping Fang,Yanqing Wang,Chenrui Ji,Zhenhao Yan,Dongchen Guo,Min Fan,Xinyi Lin,Wangchao Chen,Fuling Guo,Chengwu Shi
Abstract Sb2S3 is a promising thin-film photovoltaic absorber owing to its suitable band gap, high absorption coefficient, and earth-abundant composition. However, its performance remains limited by defect-induced carrier recombination and interfacial inhomogeneity at the electron transport layer (ETL)/Sb2S3 heterojunction, particularly when CdS is employed as an ETL. Herein, poly(acrylic acid) (PAA) with tailored molecular weight is introduced into the SnO2 colloidal solution to regulate nanoparticle dispersion and interfacial wettability, enabling the formation of a conformal and compact PAA-modified SnO2 interlayer on textured fluorine-doped tin oxide substrates. The optimized interlayer promotes the subsequent deposition of CdS films with improved surface uniformity and high-quality Sb2S3 absorbers with enhanced crystallinity. More importantly, the improved CdS/Sb2S3 interfacial integration suppresses defect-assisted recombination and prolongs the carrier lifetime, facilitating efficient charge transport. Consequently, the power conversion efficiency of Sb2S3 solar cells increased from 7.31% to 8.12%. In addition, the PAA-modified devices retain more than 91% of their initial efficiency after 100 days of ambient storage without encapsulation, significantly outperforming the control devices (80%). This work highlights the critical role of buried interface regulation in directing heterojunction growth and provides an effective interface engineering strategy for high-performance Sb2S3 photovoltaics.
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DOI
高影响因子
COLLOID AND POLYMER SCIENCE
·
2026
·
IF 2.9
Zhang Zhenghua,Lu Ping,Niu Ming,Long Haitao,Zhao Jie,Xu Weibing,Hang Zhaojia
The clinical application of trimethoprim (TMP) is limited by the low water solubility, short half-life and low oral bioavailability. Polyacrylic acid-stabilized trimethoprim amorphous solid dispersant (PAA/TMP ASD) are prepared by spray drying technology. The PAA/TMP ASD forms microspheres with diameters from hundreds of nanometers to tens of micrometers. The payload of TMP in the ASD can be regulated by adjusting the feeding ratio. During the continuous 7-day test, the variation range of particle size and Zeta potential is both less than 10%. In gastric juice, the ASD show low cumulative release (13.1% and 30.2%) with an initial explosive phase, whereas in PBS and intestinal fluid, the equilibrium release arrives to 64.3% and 41.5%. At a concentration of 0.097 mg/mL, the in vitro inhibition rate against E. coli can reach more than 98%. The inhibition rate of the biofilm formation is 82% at the concentration of 0.2 mg/mL. The TMP/PAA ASD shortens the peak time from 3.333 to 2.0 h, increases the peak concentration from 1.012 to 1.133 µg/mL, and significantly reduces the absorption half-life from 1.387 to 0.191 h. The TMP/PAA ASD formulation prolongs the elimination half-life from 26.033 to 34.699 h, along with increases AUC and MRT values, and demonstrates higher drug exposure and a longer duration of action in vivo. This work develops an important method to enhance the oral utilization rate of TMP.
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产品关联
DOI
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Yingchun Luo,Kaicheng Zhou,Zhongli Wu,Xiaomin Jian,Heng Xu,Wenjing He,Ya Wang,Daohai Zhang
Copper (Cu) is an essential micronutrient for the human body. Excessive intake of copper (Cu) can react with human protein and cause a variety of major diseases. In this study, in view of the needs of heavy metal pollution detection, a fluorescent responsive hydrogel based on rare earth doping was designed and developed. The results showed that the introduction of Tb 3+ not only serves as the luminescence center, but also significantly regulates the microscopic morphology, infrared spectroscopy characteristics and swelling properties of PVA/PAA hydrogels. Mechanism studies have shown that Cu 2+ can destroy the coordination structure of PVA/PAA and Tb 3+ , thereby disintegrating the "antenna effect", which ultimately leads to a decrease in the fluorescence intensity of the hydrogel. Based on this, the hydrogel has highly specific fluorescence response characteristics (LOD = 1.38 μM) to heavy metal ions (especially Cu 2+ ), which is expected to provide an efficient and accurate new visual detection method for food quality and safety assessment.
研究领域:
材料科学
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分析化学
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环境监测
·
生物传感器
·
食品安全
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2019
·
IF 3.771
Shufen Zou,Ruihua Lv,Zaizai Tong,Bing Na,Kuan Fu,Hesheng Liu
We report the shape-memory PAA/PEO blends where in situ hydrogen-bonding complex and the excess PEO component serve as elastomer and switching element, respectively. The hydrogen bonding interactions between PAA and PEO are responsible for in situ PAA/PEO complex formation. The in situ PAA/PEO complex, water insoluble and highly elastic, is well interpenetrated with the excess crystalline PEO component to produce bi-continuous phase morphology. As a result, the blends ( wt PAA / wt PEO = 0.1 : 1 and 0.2 : 1), consisting of sufficient amount of in situ complex and the excess highly crystalline PEO, exhibit superior shape memory effects with a fixing and recovery ratio of nearly 100%.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Siying Li,Zhengwei Wan,Zhuoying Wu,Dan Qian,Kun Wang,Xingyu Sun,Chuhan Zhou,Min Ling,Chengdu Liang
The inevitable side reactions during the cycling of silicon electrodes lead to the low initial Coulombic efficiencies. Binders play a vital role as a crucial component of electrodes in enhancing the initial Coulombic efficiencies in the cycling process. The water-soluble grafted CMC/PAA binder can form a three-dimensional adhesion network to cover Si particles. A large proportion of hydroxyl and carboxyl groups in the binder can generate a strong interaction with Si–OH bond to attach to the surface of Si particles. The dynamic cross-linked network helps to maintain the structural integrity of the electrodes while simultaneously enhancing the kinetics of lithium ion transportation. The Si@CMC/PAA electrode achieves a high initial Coulombic efficiency of 90.61 %, stable cycling performance and high rate capacity of 880 mAh·g −1 at 2 C.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）