CHEMOSPHERE
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2022
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IF 8.943
Jian Lu,Jie Wu,Jun Wu,Xia He
Microplastics widely exist in diverse matrices to become important hosts of pollutants. Little information regarding adsorption of emerging contaminants on coastal saline soils influenced by co-existing microplastics is available. Thus, the adsorption behaviors of nonylphenol (NP) on coastal saline soil influenced by microplastics were discussed. Polyvinyl chloride (PVC, 4.7 mm), polyethylene (4.85 mm), and polypropylene (4.51 mm) with addition dose of 10% were used to discuss the effect of microplastic type on adsorption of NP by coastal saline soil while PVC samples with size of 4.7 mm and 0.11 mm were used to explore the effect of microplastic size on NP adsorption. The NP adsorption capacity of the saline soil containing 10% of PVC (4.7 mm) was twice that of soil without PVC. Smaller-size PVC (0.11 mm) with addition amount of 10% enhanced the NP adsorption capacity of the coastal saline soil by 117% to reach 8.91 μg g −1 . The desorption capacity of NP on saline soil decreased from 40% to 30% of total adsorption capacity with co-existing PVC. Adsorption/desorption kinetics of NP on coastal saline soil with PVC microplastics could be well explained by pseudo second order model while Freundlich model could better fit the isotherm data of NP adsorption/desorption to show possible occurrence of the multiple-layer adsorption. This study will provide new information regarding the environmental behaviors of typical emerging contaminants on coastal saline soil containing microplastics.
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ANALYTICA CHIMICA ACTA
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2022
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IF 6.911
Xiqing Liu,Tao Wang,Yongqing Wang
In this study, a conversion method and molecular imprinting technology were used to design molecularly imprinted polymers (MIP)-based ratiometric fluorescence test papers. The ZnO quantum dots (ZnO QDs) acted as the background quantum dots and ZIF-8 raw material. Carbon dots (CDs) were used as the identification signals. The imprinting layer achieved a selective function. Therefore, a ZnO@ZIF-8/CDs@MIPs sensor was designed for the detection of Bisphenol A (BPA). The sensor exhibited a fast response time for BPA detection. In addition, the sensor demonstrated that effective detection of BPA can still be achieved in complex environments. The detection limit of this sensor was 0.778 nM with a linear range of 0–60 nM. The corresponding test solutions exhibited clear changes from blue to yellow. The selectivity experiments results demonstrated that ZnO@ZIF-8/CDs@MIPs only exhibit excellent selective recognition effect for BPA. ZnO@ZIF-8/CDs@MIPs-2 was used for the detection of BPA in canned food and compared with the results of HPLC detection of BPA. The two spiked recovery ranges were 96.58–102.04% and 97.43–103.82%, respectively. In addition, the prepared ZnO@ZIF-8/CDs@MIPs-2 test paper visually recognized BPA under ultraviolet light. This study provides guidelines for the design and application of fluorescent test papers for quick detection in practical applications.
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Water
·
2022
·Vol. 14
·期 20
·3288
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IF 3.53
Fangfang Ding,Qianqian Zhao,Luchen Wang,Juan Ma,Lingmin Song,Danfei Huang
As two environmental pollutants of great concern, polystyrene microplastics (PS-MPs) and nonylphenol (NP) often coexist in the environment and cause combined pollution. Batch adsorption experiments were carried out by varying parameters such as pH, the particle sizes of the PS-MPs, the initial concentration of NP, and metal ion content. The results showed that the particle size of the PS-MPs in the range tested (0.1, 1, 10, 50, and 100 μm) had a significant effect on their NP adsorption capacity. The NP adsorption process of the PS-MPs was best described by the pseudo-second-order kinetic model and the Langmuir isotherm model, while the intraparticle diffusion and Bangham models were also involved in determining the NP adsorption process of 0.1 μm PS-MPs. Both PS-MPs and NP significantly affected cell proliferation, which had been confirmed by reduced cell viability, a blocked cell cycle G1 phase, and elevated apoptosis by affecting the basic cell functions. Furthermore, the negative effects of 0.1 μm PS-MPs on cell proliferation and function were aggravated after the adsorption of NP. Further research on the potential health risks of PS-MPs combined with NP or other environmental contaminants is needed.Keywords:microplastics;nonylphenol;adsorption;desorption;cytotoxicity
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2022
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IF 5.518
Zi-Wen Zhou,Chun-Xiu Liu,Chun-Xian Cai,Na Wang,Xiao-Qi Yu
In this work, PEG modified photocatalytic covalent organic framework (PEG@CTF-OMe) was co-immobilized with laccase into Cu doping calcium alginate gel beads (Ca/Cu-PEG@CTF-OMe-lac). PEG@CTF-OMe improved the light stability of laccase under blue light irradiation , and external introduction of copper into gel beads stabilized the conformation and improved pH adaptability of laccase. With the help of 2,2-binamine-di-3-ethylbenzothiazolin-6-sulfonic acid (ABTs), the immobilized laccase (Ca/Cu-PEG@CTF-OMe-lac) presented outstanding synergistic removal of pollutants by photocatalysis and enzymatic catalysis, as well as ABTs radicals generation promoting by copper ions in the laccase-mediator system. The removal recyclability performance assay found that the Ca/Cu-PEG@CTF-OMe-lac gel beads had more than 80 % removal efficiency for phenol , 4-chlorophenol, 2,4-dichlorophenol, nonyl phenol, bisphenol A and indole in water at 25 °C after 5 cycles, when the concentration reached as high as 70 mg/L, 60 mg/L, 120 mg/L, 100 mg/L, 100 mg/L and 100 mg/L, respectively. The high synergistic removal performance obtained by the gel beads co-immobilizing laccase and photocatalytic CTFs showed greater practical application value.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Sheng Liu,Yujuan Guo,Shunmin Yi,Shijing Yan,Chaoliu Ouyang,Fei Deng,Chunxue Li,Guangfu Liao,Qing Li
Supported noble metal heterogeneous catalysts have been proven to be effective for the treatment of toxic organic pollutants. Herein, ultrafine Ag nanoparticles (NPs) with an average size of approximately 4.37 nm was decorated on the surface of pure silicon zeolite nanoparticle (PSZN) and confined in pore channels through a low-cost and environmentally friendly in-situ reduction strategy. The prepared Ag/PSZN nanocomposites showed ultrahigh catalytic activity for the reduction of 4-nitrophenol (4-NP) (∼200 s, 17.29 × 10 -3 s −1 ) and methylene blue (MB) (∼4 min, 76.53 × 10 -2 min −1 ), which outperforms the majority of the previously reported Ag-based catalysts. The excellent catalytic performance is due to the large loading amount (W t = 16.8 %) and ultrasmall size of Ag NPs, which provides abundant active sites. Moreover, it showed outstanding recyclability of 93 % and 86 % removal of 4-NP and MB, respectively, after 10 cycle reactions, and stability after 300 days of storage at room temperature. This work offers new insights into the fabrication of Ag-based catalysts for efficiently removing organic pollutants from aqueous solutions.
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Journal of Environmental Chemical Engineering
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2022
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IF 7.968
Guangyu Shi,Jiayuan Hu,Shuhan Zhang,Gang Ni,Weilin Shi,Chengxiao Hu,Xiaohu Zhao
Nonylphenol (NP) and cadmium (Cd), very toxic to microorganisms , plants, and animals, are often detected simultaneously in soil and water. Selenium (Se) is important to microorganisms and plants. A pot experiment was carried out to explore the effect of Se on the efficiency of ryegrass in the remediation of NP-Cd co-contaminated soil. The removal rate of soil NP and Cd increased by 6.2 % and 30.8 %, respectively, with the application of exogenous Se in NP-contaminated soil (50 mg·kg −1 ). The selenium significantly increased the catalase activity (11.5–24.5%), but decreased the activities of acid phosphatase (5.5–9.0 %), invertase (19.8–22.5 %), and urease (11.1–18.4 %) in NP contaminated soil (50 mg·kg −1 ) ( p ＜0.05). The selenium also increased the relative abundance of beneficial bacteria, including Massilia , Burkholderiaceae , Micrococcales, and Sphingomonas in the NP-Cd co-contaminated soil. These bacteria are closely related to Cd and NP pollution remediation. In summary, applying Se to the contaminated soil effectively improved the efficiency of the phytoremediation of NP and Cd, and also increased the relative abundance and diversity of microorganisms in the NP-Cd co-contaminated soil. These findings can attract practical interest in phytoremediation measures of organic and heavy metals co-contaminated soil.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2023
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IF 5.2
Xuelian Chen,Tong Zhou,Xiqiang Pan,Hong Li
We demonstrate a simple approach for fabricating polydopamine microcapsules decorated with silver nanoparticles (Ag@PDA MCs) as highly efficient catalysts for water purification . Polydopamine microcapsules (PDA MCs) were formed on the MnCO 3 template from self-polymerization and the removal of template under mild EDTA solution, followed by in situ reduction of Ag + by PDA and growth of monodispersed Ag nanoparticles . Under optimized conditions, the Ag@PDA MCs exhibits 41.56 wt% of Ag loading contents and superior catalytic performance for the degradation of organic pollutants with rate constant of 2.93 min -1 for methylene blue and 1.03 min -1 for 4-nitrophenol. The excellent catalytic activity can mainly be ascribed to high surface roughness of microcapsules, high Ag loading ratio, and uniform distribution of Ag nanoparticles . In addition, this catalyst can be recycled for five times with degradation efficiency higher than 98%. The Ag@PDA MCs possessed fast reduction rate, high catalytic activity, and good recyclability as well as facile preparation and easy separation, showing great potential for the application in wastewater treatment .
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Food & Function
·
2022
·Vol. 13
·期 10
·5794-5806
·
IF 6.317
Wenshuai Wang,Xiaoxu Li,Yaohan Zhang,Jianjun Zhang,Le Jia
Nonylphenol (NP) exposure has become a crucial inducement of male reproductive disorders in the world. Therefore, it is urgent to seek solutions to alleviate the toxicity of NP. This study was oriented toward studying the protective effects of Macrolepiota procera mycelium polysaccharides (MMP) on NP-induced reproductive impairments. After NP administration, declined sperm amounts and testis index, increased the deformity rate of sperms, aberrant hormone secretion and testicular pathological injury were observed, corporately leading to reproductive capacity attenuation. Importantly, MMP significantly reversed the foregoing changes in NP-treated mice. Notably, it has been observed that the MMP therapy remarkably improved oxidative stress, apoptosis, autophagy and inflammatory responses, and suppressed the Akt/mTOR signaling pathway in testicular tissues. These results manifested that MMP might be a promising treatment strategy for ameliorating the biotoxicity of NP.
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ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2022
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IF 7.129
Lin-Lin Hu,Hong-Ge Li,Bi-Yun Liao,Yi Xu,Shao-Chen Sun,Jun-Li Wang
Nonylphenol (NP) is an environmental endocrine disruptor, which is mainly used in the production of surfactants, lubricants, additives, pesticides, and emulsifiers. NP is widely found in sewage and sludge, which has neurotoxicity, immunotoxicity, metabolic toxicity and reproductive toxicity. In this study, we investigated the effects of NP exposure on mammalian oocyte quality from organelle aspects with mouse in vivo model. The results showed that the ovarian weight of mice exposed to 500 μg/L NP for 4 weeks increased and the development ability of oocytes decreased, showing with lower rate of polar body extrusion. Further analysis indicated that exposure to NP caused the abnormal distribution of mitochondria, following with altered membrane potential drop. NP exposure disrupted the spindle periphery localization of ER, and affected the expression of GRP78 for the induction of ER stress. Moreover, Golgi apparatus fragment in the oocytes was observed, and Rab11-based vesicle transport was disturbed. We also found that the protein degradation might be affected since LAMP2 expression increased and LC3 decreased, indicating the lysosome and autophagy dysfunction. Taken together, our findings suggested that the exposure of NP to mice in vivo affected oocyte quality through its effects on the distribution and function of organelles.
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JOURNAL OF MOLECULAR LIQUIDS
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2022
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IF 6.633
Dan Li,Yitong Dai,Xuejiao Chen,Xuena Zhang,Danwei Yue,Jingying Wang,Yongsheng Guo
A gold nanofluid with good suspension stability was prepared using hyperbranched polyglycerol (HPG) as a stabilizer because of the functional hydroxyl groups at the end of every branch in its structure. The effects of reaction-medium pH and temperature on the preparation of the HPG-gold nanofluids were discussed. The influences of pH on the stability of HPG-gold nanofluids after preparation were investigated. The HPG-gold nanofluid was employed as catalyst for the reduction of 4-nitrophenol. The results showed that HPG-Au nanofluid stabilized at high pH range (pH = 10). The nanofluid exhibited high activity in the catalytic hydrogenation of 4-nitrophenol. The HPG-gold nanofluid was promising for applications of quasi-homogeneous catalysis.
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RSC Advances
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2022
·Vol. 12
·期 8
·4550-4561
·
IF 4.036
Yun Liu,Haihua Yang,Tao Chen
It is highly desirable to explore efficient catalysts for reducing toxic Cr6+ to benign Cr3+ under mild and eco-friendly conditions. This article describes a facile fabrication of nitrogen doped carbon (N@C-g-C3N4) as a metal-free catalyst for Cr6+ reduction using lignin as a carbon source and g-C3N4 nanosheets as a nitrogen source. The structural properties of the N@C-g-C3N4 catalyst are characterized by TEM, HR-TEM, XRD, TGA, Raman, EDS-mapping, XPS and BET techniques. The summation of these analyses sheds light on the high surface area (903 m2 g−1), mesopore size (17.3 nm) and defects (ID/IG = 0.97) of N@C-g-C3N4, which contribute to its excellent catalytic activity in HCOOH-mediated reduction of Cr6+ to Cr3+ with high rate constant (2.98 min−1) and turnover frequency (2.21 molK2Cr2O7 gcatalyst−1 min−1) and complete degradation (100%) within 5 min. The catalytic performance of the catalyst reveals that the reduction activity is significantly dependent on the concentration of Cr6+ and HCOOH, catalyst loading, pH, temperature, and foreign ions. Particularly, the N@C-g-C3N4 catalyst shows superior stability and renewability with little loss of activity (≥95%) after 8 months storage and five repeated uses. Furthermore, N@C-g-C3N4 can be applied in other hydrogenation reactions involving K3[Fe(CN)6], 4-NP and BPA using NaBH4 as a hydrogen donor, and the removal of organic dyes. These findings illustrate that N@C-g-C3N4 as a metal-free catalyst is effective, versatile and eco-friendly for the reduction of Cr6+ from contaminated environments.
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JOURNAL OF CATALYSIS
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2022
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IF 8.047
Fengxia Tong,Chen Cui,Xizhuang Liang,Zeyan Wang,Yuanyuan Liu,Peng Wang,Hefeng Cheng,Ying Dai,Zhaoke Zheng,Baibiao Huang
Plasmonic nanostructures with strong light absorption and high catalytic activity are ideal platform to realize efficient light-driven catalysis. This work developed a laser-induced-reshaping route (pulse width 10 ns, wavelength 1064 nm) to improve the efficiency of energy transfer between non-plasmonic material (Pt) and plasmonic Au nanorods (NRs). The catalytic performance for 4-nitrophenol (4-NP) hydrogenation was increased by 2-fold using laser-modified Pt-Au NRs (L-Pt-Au NRs) compared to original Pt-Au NRs. Very impressively, the relationship between laser-induced reshaping and resulting optical properties was investigated at single-particle level. Finite difference time domain (FDTD) simulation and single-particle photoluminescence (PL) quenching (48.6%) after laser induced reshaping, indicated the redistributed Pt atoms on Au NRs surfaces largely promoted hot electron transfer and decreased radiative photon re-emission. Further, the mechanism of plasmon-enhanced nitroreduction was studied in situ at the single-particle level. This work provides insight into the design and application of plasmonic nanostructures at single-particle level.
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危险品化学品经营许可证（带存储）