JOURNAL OF HAZARDOUS MATERIALS
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2022
·
IF 14.224
Xiang Mei,Han Gao,Yang Ding,Chao Xue,Lijie Xu,Yong Wang,Lei Zhang,Mengyuan Ma,Zimiao Zhang,Yanyan Xiao,Xu Yang,Chengqi Yin,Zhan Wang,Mengmeng Yang,Dongyu Xia,Cai Wang
Membrane biofilm (MBf) technology is a promising biological water treatment process that combines membrane aeration with biofilms. To expand its application in the treatment of toxic organic wastewater, methane/air gas mixture-MBfs ((CH 4 + Air)-MBfs) and air-MBfs were coupled to enhance the treatment of p -nitroaniline (PNA) wastewater. Based on exploration of the membrane permeability of methane and oxygen, a hybrid MBf reactor was constructed, and the degradation characteristics of PNA and the coupling effects of (CH 4 + Air)-MBfs and air-MBfs were studied. The permeation flux of methane was found to be 1.114 g/(m 2 d) when using a methane/air gas mixture at an aeration pressure of 10 kPa, and this result was better than that when methane was used as the aeration gas alone. Aeration with a methane/air gas mixture provided conditions for realizing aerobic methane oxidation ; the aerobic methane oxidation that occurred in the (CH 4 + Air)-MBfs promoted the reduction of PNA, and the intermediates of PNA degradation were further degraded by the air-MBfs. At an influent PNA membrane area load of 1.67 g/(m 2 d), the PNA removal load reached 187.30 g/(m 3 d). The coupling of MBfs took advantage of different matrix-based MBfs and promoted the degradation of PNA by utilizing the synergistic effects of various functional microorganisms .
研究领域:
环境工程
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水处理技术
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生物过程
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DOI
PubMed
高影响因子
ANALYST
·
2023
·Vol. 149
·期 4
·1212-1220
·
IF 4.2
Feng Li,Kai-Qi Liu,Wen-Juan Wang,Zhen-Tao Jiang,Fen-Ying Kong,Heng-Ye Li,Zhong-Xia Wang,Wei Wang
A fluorometric method based on boron, bromide-codoped carbon dots (BBCNs) was developed for the first time for the highly selective detection of p-nitroaniline (PNA) in wastewater samples. It should be noted that the introduction of bromine greatly increases the molecular polarizability of the probe, which can regulate the energy level matching between the probe and PNA, resulting in the interaction between BBCNs and PNA. In the presence of PNA, the fluorescence of BBCNs is obviously quenched and accompanied by a red shift of the fluorescence band, which might be attributed to the formation of aggregates caused by the polar adsorption of BBCNs and PNA. It is beneficial for constructing a highly selective sensing platform for PNA determination compared to its isomers (o-nitroaniline and m-nitroaniline) through atomic bromine-mediated polarization of the BBCNs. With the help of this mechanism, an excellent linear range of 0.5–300 μM with a low detection limit of 0.24 μM toward PNA was obtained. This work further confirms that there is a significant relationship between the nature of doping elements and the optical and physicochemical properties of fluorescent materials.
研究领域:
分析化学
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环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2022
·
IF 4.778
Kai-Sheng Yao,Hui-Hui Li,Ya-Nan Zhao,Chen-Chen Zhao,Wei-Wei Lu,Jun Zhang
Designing a mild and cost-saving one-step protocol to construct free-supporting 3D bimetallic nanomaterials is highly appealed in both academic research and industrial applications. In this work, large 3D AuPd nanoflowers (NFs) are grown and constructed at room temperature in water via an ionic liquid 1-butyl-3-methylimidazolium chloride ([Bmim]Cl)-directed method. The results show that the as-obtained AuPd NFs present opening and free-standing multi-level structures. Specifically, large AuPd NFs are built up by 2D leaves, the leaves are composed of many nanobranches, which consist of nanopetals with symmetric growth. It is shown that the [Bmim]Cl has an important effect on the construction of AuPd NFs. Meanwhile, the AuPd NFs exhibit superior catalytic activity toward both the degradation of organic dyes (methylene blue and Congo red) and the reduction of nitroaromatics ( p -nitrophenol and p -nitroaniline). After six runs of the recycles, no obvious deactivation is found. The large AuPd NFs are also eagerly expected to have potentials in other applications including electrocatalysis and sensors.
研究领域:
材料科学
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纳米技术
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催化
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2019
·Vol. 9
·期 71
·41383-41391
·
IF 3.049
Lei Cai,Zhaohui Zhang,Haimei Xiao,Shan Chen,Jinli Fu
An eco-friendly fluorescent molecularly imprinted polymer anchored on the surface of graphene quantum dots (GQDs@MIP) was developed with an efficient sol–gel polymerization for highly sensitive and selective determination of p-nitroaniline (p-NA). The GQDs@MIP was characterized in detail by Fourier-transform infrared, fluorescence spectrometer, scanning electron microscope, transmission electron microscope and ultraviolet spectrophotometer. The results showed that the imprinted layer was successfully grafted on the surface of the GQDs. The fluorescence of the GQDs@MIP is efficiently quenched when p-NA recombines with the imprinting sites based on the photo-induced electron transfer fluorescence quenching mechanism. A good linear relationship was obtained between the fluorescence quenching efficiency of the GQDs@MIP and the concentration of p-NA in the range of 0–15.0 μM with a correlation coefficient of 0.99. The practicability of the proposed method in real samples was successfully evaluated through monitoring p-NA in water and fish samples with satisfactory recovery. The developed method provides a feasible and eco-friendly strategy to fabricate MIPs anchored on GQDs with good fluorescence properties for sensitive detection of organic pollutants in complex samples.
研究领域:
分析化学
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环境科学
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材料科学
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传感器技术
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污染物检测
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纳米材料
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食品安全
✓ 已验证
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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2022
·Vol. 24
·期 23
·14545-14551
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IF 3.945
Ziqian Shi,Jingwen Liu,Hongyan Xi,Pengfei Wu,Niu Pan,Tingting You,Yukun Gao,Penggang Yin
Localized surface plasmon resonance (LSPR) is caused by the irradiation of light on a metal surface. Here we present a surface plasmon catalytic reaction at the gas–liquid–solid three phase interface. Electrochemical deposition was used to prepare Ag nanostructure/Cu mesh surface-enhanced Raman scattering (SERS) substrates. Surface wettability was adjusted by changing the processing time of the surfactant. Then a three-phase interface platform was constructed with good SERS performance and active surface plasmon catalytic capacity by droplet detection. At the gas–liquid–solid three phase interface, different oxygen supplies for the catalytic reaction were offered on surfaces with different wettability values. Thus, in this study, surface plasmon catalytic reaction of p-nitroaniline (PNA) was successfully in situ monitored and the reaction mechanism was explored. Otherwise, density functional theory (DFT) was used to calculate the Raman spectra and energy levels of the reactants and reaction products. Moreover, this work provides a new platform for monitoring the surface plasmon reaction at the gas–liquid–solid three-phase interface and contributes to the development of the study in the surface plasmon catalytic reaction field.
研究领域:
材料科学
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催化
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表面化学
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纳米技术
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光谱学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2011
·
IF 2.925
Yonghua Xie,Rui Zhao,Ying Tan,Xin Zhang,Feng Liu,Yuyang Jiang,Chunyan Tan
We have developed conjugated polyelectrolyte-based fluorescence turn-on assays for caspase 3 and 8. These assays are composed of a cationic polyphenylene ethynylene polymer PPE4+ and p-nitroaniline modified caspase peptide substrate. The fluorescence of the assay is initially turned-off because of the efficient quenching of the polymer by p-nitroaniline moiety on anionic peptide substrates. A turn-on effect is observed due to the cleavage of the peptide by the enzyme and formation of the neutral p-nitroaniline unit which has no quenching on the polymer. We validated this assay design and obtained kinetic parameters of caspase 3 and caspase 8. These assays demonstrated good sensitivity as in pmol/L (0.1 units/mL) for caspase 3 and nmol/L (0.2 units/mL) for caspase 8. This method also showed high specificity by using caspase 3 assay as a model system and the results demonstrated that other proteases including caspase 8, papain, pepsin, and trypsin did not show observable fluorescence turn-on effect. The dose–response curve of a caspase inhibitor Z-VAD-FMK was evaluated by caspase 3 assay, by which the IC50 value was determined to be 0.73 μM and was in a good agreement with the literature reported value at 0.62 μM. This design could be applied into the in vitro screening of small molecular inhibitors for drug discovery.
研究领域:
生物化学
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分子生物学
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分析化学
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药物发现
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产品关联
DOI
PubMed
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Shuhan Hui,Yandong Han,Wensheng Yang
This study delves into the impact of the hydrolysis/condensation of 3-mercaptopropyltrimethoxysilane (MPTMS) on the modification of thiol groups on the surface of silica particles. By employing an optimized Stöber method, such as the pH, water content, and quantity of MPTMS in the reaction system, a systematic exploration of the size, shape, and size/shape distribution of the thiol-modified silica particles was carried out. During these investigations, Ellman’s colorimetric method and Raman spectroscopy were utilized to quantitatively analyze the changes in the amount of thiol modification on the surface of silica particles. Furthermore, the synthesized SH-SiO2 particles were employed as adsorption carriers for Au3+ ions, which were then reduced to form SH-SiO2/Au composite particles. Significantly, these prepared SH-SiO2/Au composite particles exhibited remarkable catalytic activity in the reduction reaction of p-nitroaniline.
研究领域:
材料科学
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纳米技术
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表面化学
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无机化学
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催化作用
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHYSICAL CHEMISTRY B
·
2017
·
IF 3.177
Wangqin Song,Jie Zhu,Lvdan Liu,Guangming Liu
Macromolecular crowding could influence the binding affinity of the polyzwitterion-conjugated proteins. Herein, the hydrolysis of N-succinyl-Ala-Ala-Pro-Phe p-nitroanilide by the poly(carboxybetaine) conjugated α-chymotrypsin (PCT) was employed as a model system to investigate the modulation of the binding affinity of the polyzwitterion-conjugated proteins by the ion-specific effects in the crowded environments. In comparison with the bare α-chymotrypsin (BCT), the binding affinity of the PCT to the peptide is stronger in the dilute solutions but becomes weaker in the crowded environments. Our study demonstrates that the kosmotropic Ac– anion is incapable of achieving a stronger enzymatic binding affinity of the PCT than the BCT in the highly crowded environments. By contrast, the binding affinity of the PCT can be enhanced to be stronger than that of the BCT by the chaotropic SCN– anion in the crowded environments.
研究领域:
生物物理学
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生物化学
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
·
2024
·
IF 1.9
Gege Zhao,Haoyu Xu,Hai Zhang,Hong Zhang,Yanlan Bi,Xuebing Xu
Crude coconut oil often contains high levels of polycyclic aromatic hydrocarbons (PAHs), which are commonly carcinogenic. The present work demonstrated that PAHs in coconut oil were significantly removed by ionic liquids (ILs). The relationship between the removal efficiency and the structures of ILs was investigated, using 12 different types ILs. Among these, 1-butyl-3-methylimidazolium tosylate ([Bmim][TOS]) showed the highest efficiency in removing benzo(a)pyrene (BaP). The optimal process conditions for the removal of PAHs using [Bmim][TOS] were explored, and the removal efficiency for benzo(a)anthracene (BaA), chrysene (CHR), benzo(b)fluoranthene (BbF), and BaP under the optimal conditions were 42.7 ± 1.0, 33.3 ± 1.4, 88.8 ± 0.9, and 73.8 ± 1.0%, respectively. Importantly, [Bmim][TOS] could be recycled up to five times without a significant decrease in PAHs removal. The quantum chemistry calculations and spectrum analyses were conducted to study the interactions between ILs and PAHs, using BaP as a model compound. The ability of [Bmim][TOS] to remove PAHs originate its high hydrogen bond accepting ability and the collaborative hydrogen bond interactions between the PAHs and ILs.
研究领域:
食品科学
·
环境化学
✓ 已验证
产品关联
DOI
高影响因子
ChemSusChem
·
2024
·
IF 7.5
Yu Chen,Zhuojia Shi,Xueqing Zhang,Chenyang Wang,Yanlong Wang,Zihang Niu,Yuqing Zhang,Minghui Feng
Graphical We for the first time use green deep eutectic solvents to recover solid electrolytes from all-solid-state lithium-ion batteries with high efficiency and high Li/La selectivity at mild temperature. Furthermore, we screen 70 kinds of anti-solvents for the precipitation of extracted metal from leachate and find that 12 kind of anti-solvents could successfully precipitate at room temperature with high efficiency. All-solid-state lithium-ion batteries (ASSLIBs) are attracting significant attention due to their high energy density, conductivity and safety. However, they are expected to generate substantial waste in the near future, leading to resource depletion and environmental pollution. Therefore, it is crucial to achieve green, mild and safe recovery of ASSLIBs. Here, we for the first time to use green deep eutectic solvents (DESs) to effectively recover solid-state electrolytes (SSEs) from ASSLIBs at mild temperature. Results show that Li leaching efficiency can reach up to 87.5 % with a superhigh Li/La selectivity of 1902 at a low temperature of 80 °C. Furthermore, 70 anti-solvents are screened to recycle the dissolved SSEs from leachate and 12 anti-solvents could precipitate SSEs from leachate at room temperature. This research opens new possibilities for recovering SSEs from ASSLIBs using the sustainable, cost-effective and safe solvents.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Yu Chen,Yaxue Shen,Zhuojia Shi,Ziyang Zhang,Qing Zhang,Yanlong Wang,Minghui Feng,Chenyang Wang
All-solid-state sodium-ion batteries (ASIBs) have wide application prospects in the fields of renewable energy and electric vehicles due to their high energy density and long-life cycle. With the rapid development of industrialization, the number of ASIBs will increase, which might result in a significant increase in the price of metal in ASIBs in the near future. Many waste ASIBs would be produced and lead to waste of resources, environmental pollution and health hazards. Therefore, it is of vital important significance to provide a green and efficient method to recover waste ASIBs. Here, we for the first time propose a mild, green and low-cost strategy for recovery of cathode materials and all-solid-state electrolyte from spent ASIBs by using deep eutectic solvents (DESs). Results show that the highest leaching efficiency of Na in ASIBs cathode materials and all-solid-state electrolytes by using DESs is 88.3% and 56.9%, respectively. Moreover, we use a simple anti-solvent approach of recovering the metals in the leachate with low cost at room temperature. This work would provide a mild, green and low-cost strategy from recycling metals in cathode materials and all-solid-state electrolyte from waste ASIBs.
研究领域:
材料科学
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环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2024
·
IF 3.8
Yali Yang,Jia Chen,Xiaojing Liang,Bei Liu,Kaijun Quan,Xiuhui Liu,Hongdeng Qiu
In this paper, three imidazole- and C18- bifunctional silica stationary phases (Sil-Im-C18) were prepared by adjusting introduction interval of octadecyltrichlorosilane (ODS) and 3-imidazol-1-ylpropyl(trimethoxy)silane (TMPImS), which can be used for reversed-phase liquid chromatography (RPLC) and ion exchange chromatography (IEC) with adjustable performance. The successful preparation of Sil-Im-C18 were confirmed by the characterizations of elemental analysis, infrared spectroscopy (FTIR) and contact angle (CA). Chromatographic performance of Sil-Im-C18 were evaluated by the separation of Tanaka test mixture, alkylbenzenes, linear PAHs and a set of analytes with different properties (uracil, phenol, 1,2-dinitrobenzene and naphthalene), and compared with commonly used C18 column. It was found that the chromatographic performance of Sil-Im-C18 changed significantly with the difference in bonding amount of imidazole and C18. Sil-Im-C18 demonstrated the excellent separation performance towards polycyclic aromatic hydrocarbons (PAHs), phenylesters, phenylamines , phenols and inorganic anions, and notably, nucleobases and nucleosides can be separated using pure water as mobile phases . The van Deemter plot showed that the column efficiency of Sil-Im-C18-3 was 64,933 plate· m − 1 for naphthalene, indicated that Sil-Im-C18 was reasonably chromatographic columns. The RSD values of retention time were 0.22 %-0.61 % for 10 needles alkylbenzenes injected continuously at 50 °C to investigate thermal stability and repeatability, all the fluctuations of k of naphthalene were less than 2.3 % for Sil-Im-C18-1 during flushing 24 h with the mobile phase at different pH values (pH = 3 and 8), the retention time of alkylbenzenes were almost same for Sil-Im-C18-1 at different time, the RSD values of retention time of alkylbenzenes were 0.45 %-2.28 % for two batches Sil-Im-C18-1, revealing the excellent repeatability, thermal stability, durability and reproducibility of Sil-Im-C18, and implying a commercial prospect.
研究领域:
分析化学
·
色谱技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）