NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Peitong Cen,Chenxi Li,Siqin Lu,Zhuoran Yi,Jiaqian Zhang,Ziyin Xia,Hui Sun,Meng Li,Hongguo Zhang
Peroxymonosulfate (PMS) based Fenton-like reaction have attracted wide concerns for remediation of wastewater, but the temperature regulation for catalysts effectivity remains unclear.Here, the copper-based nanomaterials were synthesized by regulating the copper valence under different calcination temperature and it was also used as a Fenton-like catalyst to activate PMS for the degradation of oxytetracycline (OTC). The results showed that Cu 2 O/Cu-450 catalysts exhibited the best catalytic performance in activating PMS to degrade OTC, with a removal rate of over 95% within 16 min. Various characterization techniques revealed that the crystal structure and surface properties of the materials were significantly affected by the calcination temperature. Quenching experiments and electron paramagnetic resonance results indicated that the main reactive oxygen species in the system were singlet oxygen and superoxide radicals. The Cu 2 O/Cu-450-PMS system showed strong tolerance to changing pH range (4-10) and water environments and this reaction system also possessed high degradation efficiency towards to oxytetracycline, tetracycline, methyl orange, phenol, and ciprofloxacin. The OTC degradation followed pseudo-first-order kinetics, Cu 2 O/Cu-450 with a rate constant of 0.193 min -1 , which was 3.06 and 2.57 times higher than those of CuO-250 and Cu-650. The analysis of toxicity estimation software tool showed that the toxicity of OTC and its degradation intermediates was significantly reduced. This study provides a high-effective and feasible method for effectively removing OTC from polluted water.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
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IF 9
Xiaomin Guo,Wei Wang,Huan Lyu,Xiuling Zhang,Chunhui Li,Fan Yang,Mingxin Zhou,Yongzheng Zhang,Dongyang Miao,Ruiyun Zhang
The selective removal of dyes from wastewater remains a critical challenge due to the structural complexity and persistence of dye molecules. In this work, a polyethyleneimine (PEI)-functionalized ZIF-8 hybrid nanofibrous membrane was fabricated via a seed-assisted secondary growth strategy, aiming to achieve high selectivity toward anionic dyes. Synergistic interactions between the porous metal-organic framework (MOF) grown on the surface and the polymer functional groups enable efficient and selective adsorption of anionic dyes. Adsorption experiments demonstrated that the hybrid membrane exhibited high adsorption capacities for anionic dyes, reaching 506.48 and 929.30 mg·g −1 for Congo red (CR) and methyl orange (MO), respectively. In contrast, significantly lower adsorption capacities were observed for cationic dyes (rhodamine B, RhB and methylene blue, MB). Moreover, the membrane maintained strong selectivity toward anionic dyes in mixed dye systems containing all four dyes and retained over 80 % removal efficiency for CR and MO after ten consecutive adsorption–desorption cycles. Additionally, the membrane exhibits superhydrophilicity, excellent water stability, enhanced mechanical properties, and antibacterial activity, highlighting its potential for advanced wastewater treatment, particularly in the remediation of dye effluents. This work also provides valuable insights into the practical application of MOF-based composite materials.
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CERAMICS INTERNATIONAL
·
2025
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IF 5.6
Runlong Zhai,Lianchen Zhang,Yaru Cheng,Feng Teng,Peng Hu,Haibo Fan,Jiaming Song,Yang Jiao
The utilization of visible light for photocatalytic degradation has always been a key objective in the field of photocatalysis. In this work, we designed and synthesized an efficient visible-light photocatalyst: V 2 O 5 /ZnIn 2 S 4 (VOZ) nanoflower composite structure. The flower-like ZnIn 2 S 4 , self-assembled from nanosheets, was prepared via a hydrothermal method, followed by the in-situ growth of V 2 O 5 nanoparticles on the nanosheets of ZnIn 2 S 4 through a chemical reaction approach. The results from XPS, PL, ESR and other characterization methods revealed that V 2 O 5 and ZnIn 2 S 4 formed an S-scheme heterojunction, enabling efficient carrier separation and migration while retaining the oxidation capability of V 2 O 5 and the reduction capability of ZnIn 2 S 4 . Under visible light irradiation for 80 min, the composite achieved a 97.4 % degradation for methylene blue (MB), outperforming pure V 2 O 5 and ZnIn 2 S 4 by factors of 1.53 and 1.92, respectively. Similarly, VOZ-20 achieved over 90 % degradation of both methyl orange (MO) and rhodamine B (RhB) within 80 min of visible-light irradiation. Additionally, ICP-OES analysis revealed that the solubility of V 2 O 5 in water was significantly reduced after forming a composite with ZnIn 2 S 4 , which helps prevent vanadium ion contamination in aqueous environments. This composite, with its strong redox activity and simple synthesis, is highly promising for visible-light photocatalytic applications.
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JOURNAL OF MEMBRANE SCIENCE
·
2025
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IF 9
Yunhe Xing,Yanwei Xiao,Xiao Liu,Fei Xu,Yu Wang,Jiahao Cui,Xiaoping Lu,Shuling Zhang,Guibin Wang,Jiashuang Luan
The construction of a polymer interlayer between the substrate and polyamide (PA) layer demonstrates effectiveness in enhancing membrane separation performance through structural and chemical property regulation. Poly (ether ether ketone) (PEEK) exhibits superior solvent resistance and durability that enables itself to be a suitable substrate in organic solvent nanofiltration (OSN). However, the inherent hydrophobicity and limited processability of PEEK restrict its application in thin-film composite (TFC) membrane fabrication. In this work, a single-step in-situ polymerization approach was used to grow polyaniline (PANI) on PEEK substrates, resulting in a PANI/PEEK TFC membrane. The introduction of PANI significantly improved the hydrophilicity of PEEK substrates while simultaneously enhancing their amine monomer adsorption capacity. These conditions promote the formation of a thin PA layer and enhance the OSN performance. The optimized PANI/PEEK TFC membranes demonstrated exceptional methanol permeance (10.0 L m −2 h −1 bar −1 ) coupled with a low molecular weight cut-off (MWCO) of 371 Da. Moreover, PANI/PEEK TFC membranes maintain operational stability at 6 bar for 72 h while demonstrating selective separation efficiency in mixed dye solutions. This facile fabrication strategy for interlayered TFC membranes provides a novel paradigm for developing high-performance OSN membranes.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Yukai Chen,Yaochen Jin,Yiyi Ji,Dan Wang,Rulin Dong,Hengming Huang,Baoying Dai
The migration and separation behavior of photoinduced electrons and holes are crucial factors for photocatalytic efficiency. Elevating the reaction temperature accelerates the kinetics of carrier migration, while the construction of heterojunctions and built-in electric fields facilitates effective carrier separation. Herein, a Bi 2 O 2 CO 3 -PbTiO 3 -PVDF sponge with outstanding photothermal piezo-photocatalytic performance was fabricated for the first time. The photocatalytic performance of Bi 2 O 2 CO 3 -PbTiO 3 -PVDF sponge is 2.69 times that of PbTiO 3 -PVDF sponge and the piezo-photocatalytic performance is better than both photocatalytic and piezocatalytic performance. The synergism of built-in electric field and photothermal effect not only accelerates carriers but also separates them, creating more active carriers for elevated catalytic performance. Furthermore, the excellent elasticity and stability make the porous flexible sponge structure suitable for practical applications. Density functional theory (DFT) calculations and finite element simulations further support the experimental data and the proposed reaction mechanism. This work focuses on the controlling of carriers through electric fields and photothermal effects, providing a novel strategy for the design and development of high-performance photocatalytic composites. Efficient piezo-photocatalytic performance realized by Bi 2 O 2 CO 3 -PbTiO 3 -PVDF porous sponge. Download: Download high-res image (251KB) Download: Download full-size image
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Polymers
·
2023
·Vol. 15
·期 8
·1866
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IF 5
Huiru Yang,Aiping Wang,Xincong Feng,Hailing Dong,Tao Zhuang,Jing Sui,Shugao Zhao,Chong Sun
To meet the comprehensive demand for flexible microwave absorbing (MA) materials, a novel MA rubber containing homemade Polypyrrole nanotube (PPyNT) is produced based on the natural rubber (NR) and acrylonitrile-butadiene rubber (NBR) blends. To achieve the optimal MA performance in the X band, the PPyNT content and NR/NBR blend ratio are adjusted in detail. The 6 phr PPyNT filled NR/NBR (90/10) composite has the superior MA performance with the minimum reflection loss value of −56.67 dB and the corresponding effective bandwidth of 3.7 GHz at a thickness of 2.9 mm, which has the merits in virtue of achieving strong absorption and wide effective absorption band with low filler content and thickness compared to most reported microwave absorbing rubber materials over the same frequency. This work provides new insight into the development of flexible microwave-absorbing materials.
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高影响因子
ENVIRONMENTAL RESEARCH
·
2023
·
IF 8.3
Hao Cheng,Chao Huang,Ping Wang,Dingxun Ling,Xiaoyu Zheng,Haiyin Xu,Chongling Feng,Hao Liu,Min Cheng,Zhiming Liu
The conventional Fenton process has the drawbacks of low efficiency of Fe 3+ /Fe 2+ conversion, low utilization of H 2 O 2 , and narrow range of pH. In this paper, molybdenum sulfide (MoS 2 ) was used as a co-catalyst to boost the nanoscale zero-valent iron (nZVI) based heterogeneous Fenton-like process for the degradation of Rhodamine B (RhB). The catalytic performance, influences of parameters, degradation mechanism, and toxicity of intermediates were explored. Compared with the conventional like-Fenton process, the existence of MoS 2 accelerated the decomposition of H 2 O 2 and the RhB degradation rate constant of MoS 2 /nZVI/H 2 O 2 reached more than six times that of nZVI/H 2 O 2 . In addition, the effective pH range of MoS 2 /nZVI/H 2 O 2 was broadened to 9.0 with 84.9% of RhB being removed within 15 min. The co-catalytic system of MoS 2 and nZVI was stable and had high reusability according to the results of four consecutive runs. Quenching tests and electron paramagnetic resonance (EPR) demonstrated that hydroxyl radical (·OH), superoxide anions (·O 2 − ), and singlet oxygen ( 1 O 2 ) were all involved in MoS 2 /nZVI/H 2 O 2 . Compared with nZVI/H 2 O 2 system, MoS 2 not only increased the corrosion of nZVI but also accelerated the conversion of Fe 3+ /Fe 2+ . ECOSAR analysis suggested that the overall acute and chronic toxicity of the degradation products decreased after treatment. Hence, this MoS 2 co-catalytic nZVI based Fenton-like process can be used as a promising alternative for the treatment of organic wastewater.
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高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Jiangru Wang,Yan Yang,Qirui Shen,Dazhong Shen,Qi Kang
Imprinted cavities are the cornerstones for the recognition specificity of molecularly imprinted polymers (MIPs). But the investigations related to the recognition behavior of imprinted cavities within MIPs are scarce due to the inevitable non-specific adsorption on the outside surface of MIPs. Herein, we reported a differential strategy to investigate the pure specific adsorption into imprinted cavities within MIPs, demonstrated by using for malachite green (MG) as the model template. The adsorption isotherm and kinetics of MG into the imprinted cavities are determined by a differential colorimetry. A smartphone-based analytical device with rotating seven colorimetric tubes was fabricated to measure the absorbance on-line, monitoring simultaneously the amounts of MG adsorbed in six channels without terminating adsorption processes. The pure specific recognition by imprinted cavities within MIPs enhances the anti-interference ability and sensitivity for MG determination. The smartphone-based absorbance device with an optical path of 10 cm was applied to the field determination of MG in actual water samples, with the detection limit of 1.1 μg L −1 and the recovery in the range of 94.1 ∼ 105%. The difference in volume of eluent has little influence on absorbance measurement in the portable absorbance device.
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DESALINATION
·
2023
·
IF 9.9
Qingyi Wang,Yongping Dong,Junmei Ma,Huimin Wang,Xuping Xue,Chaojie Bai,Mingjie Lin,Lingping Luo,Congjie Gao,Lixin Xue
Polyamide/polyethylene thin film composite (PA/PE-TFC) NF membranes were prepared from reverse-phase interface polymerization (RIP) for improved Mg(II)/Li(I) separation. RIP processes between 1,3,5-benzenetricarbonyl chloride (TMC) in bottom organic phase and piperazine (PIP) in upper aqueous phase were developed to form continuous and intact surface PA separation layers on PE porous substrates thinner than traditional polysulfone (PSF) based substrates. After activation with isopropyl alcohol (IPA), PA/PE-TFC-IPA NF membranes were formed, whose NF performance could be tuned by adjusting the preparation conditions. When TMC concentration was kept at 0.15 % w/v, RIP with low PIP concentration (0.025 wt%) yield PA/PE-TFC-IPA NF membranes with negatively charged surfaces , high Na 2 SO 4 rejection rate (95 % ± 3 %) and water permeance (13–19 L·m −2 ·h −1 ·bar −1 ). RIP with high PIP concentration (0.3 wt%) formed PA/PE-TFC-IPA NF membranes with less negative surfaces, high MgCl 2 rejection rate (94.3 ± 0.7 %), low water permeance (4.8 ± 0.3 L·m −2 ·h −1 ·bar −1 ), and high Mg(II)/Li(I) separation coefficient S Li/Mg (18 ± 1) for 1000 ppm LiCl and MgCl 2 mixed solution. PA/PE-TFC-IPA NF membranes also showed good long-term stability and improved anti-fouling performance for positively charged pollutants, bearing high potential for applications in the lithium extraction processes.
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Mao Xu,Qi Tang,Yuchen Liu,Jiaqi Shi,Weiyu Zhang,Chan Guo,Qiuwen Liu,Weiwei Lei,Cheng Chen
Two-dimensional nanomaterial-based membranes have earned broad attention because of their excellent capability of separation performance in a mixture that can challenge the conventional membrane materials utilized in the organic solvent nanofiltration (OSN) field. Boron nitride (BN) nanosheet membranes have displayed superb stability and separation ability in aqueous and organic solutions compared to the widely researched analogous graphene-based membranes; nevertheless, the concentration polarization of organic dye pollutants fades their separation performance and eclipses their potential adoption as a feasible technology. Herein, PDDA-modified BN (PBN) and sodium alginate-modified BN (SBN) nanosheet membranes with a thinner laminar structure are facially fabricated to improve the molecule separation performance compared to that of the pristine BN membrane. In aqueous separation application, the SBN membranes (2 μm) can reject positively charged dyes up to 100% and the PBN membrane (2 μm) could reject negatively charged dyes up to 100%. Impressively, the PBN membranes (3 μm) and SBN membranes (3 μm) demonstrate record high performances in OSN, with a permeance of 809 L m–2 h–1 bar–1 and 97.71% rejection to acid fuchsin in acetonitrile and 290 L m–2 h–1 bar–1 and 94.94% rejection to Azure B in dimethyl sulfoxide, respectively. The charged PBN and SBN nanosheet membranes demonstrate stable separation capability, exhibiting their potential for practical water and organic solvent purification processes.
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高影响因子
JOURNAL OF POROUS MATERIALS
·
2023
·Vol. 30
·期 5
·1439-1448
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IF 2.6
He Yan,Guo Zhulei,Chen Mingfan,Wan Sicheng,Peng Nan,Fu Xiaolei,Yuan Dingzhong,Na Bing
In this paper, a new type of carbazole-based hyper-crosslinked porous polymer (HCP-CP) was prepared through a very simple “knitted” method. The obtained novel polymer HCP-CP has a good adsorption property of methyl orange (MO) and methylene blue (MB) organic dyes in aqueous solution due to its high surface area and rich nitrogen atoms. The effect of pH, adsorption time, different initial concentration of dyes and adsorption reusability were investigated in detailed. The optimum pH is 8 for the adsorption of MB and 6 for the adsorption of MO, respectively. Under the best condition, the Langmuir model fitted the adsorption isotherm well and the adsorption behavior follow pseudo-second-order kinetics. The maximum adsorption capacity of HCP-CP for cationic dye MB (q max =751.88 mg/g) is more than twice higher than that of anionic dye MO (q max =274.73 mg/g). These capacity differences may be owing to the stronger electrostatic interaction between the negatively charged nitrogen atoms of HCP-CP with the cationic dye MB than that of MO. Moreover, the used polymer HCP-CP still retain a removal percentage above 92% after 5 times adsorption-desorption recycle. Therefore, this work provided a convenient synthetic route to develop a novel hyper-crosslinked polymer with high adsorption capacity for the entrapment of dyes from aqueous solution.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Shijia Pan,Wenxuan Jiang,Lu Tian,Xiang Li,Jiaxin Wang,Yawen Wang,Zhen Li,He Guo
The simultaneous presence of antibiotics and phosphate (P) in wastewater will threaten human health and ecological security. The purpose of this study is to study the simultaneous removal of oxytetracycline (OTC) and P in water by O 3 /CaO 2 advanced oxidation process. With enhancing CaO 2 dosage, the degradation efficiency of OTC first improved and then declined, whereas the removal efficiency of P kept increasing. Increasing the amount of O 3 increased the removal efficiency of OTC, but had little effect on the removal efficiency of P. With 0.80 g/L CaO 2 and 0.50 g/h O 3 , the removal efficiency of OTC and P reached 98.0 % and 90.5 % respectively. The lower OTC concentration was beneficial to OTC degradation and P precipitation. The P concentration has no effect on OTC degradation, but it would affect itself precipitation. Alkaline environment was conducive to OTC degradation and P removal. ·OH, ·O 2 − , 1 O 2 made major contribution to the degradation of OTC, which was verified by ESR technique and free radical capture experiment. During the degradation of OTC and P removal, TOC and COD values decreased, while pH and conductivity showed a downward trend. Based on UV–Vis spectrum, 3D EEMF spectrum and LC-MS analysis, two main degradation pathways of OTC were proposed. Toxicity analysis of intermediates showed that their toxicity was significantly lower than that of OTC. The O 3 /CaO 2 system can be considered as an efficient and prospective method for the simultaneous removal of OTC and P in water.
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危险品化学品经营许可证（带存储）