WATER RESEARCH
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2015
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IF 5.528
Wenhao Wu,Kun Yang,Wei Chen,Wendi Wang,Jie Zhang,Daohui Lin,Baoshan Xing
Adsorption of 22 nonpolar and polar aromatic compounds on 10 carbon nanotubes (CNTs) with various diameters, lengths and surface oxygen-containing group contents was investigated to develop predictive correlations for adsorption, using the isotherm fitting of Polanyi theory-based Dubinin-Ashtakhov (DA) model. Adsorption capacity of aromatic compounds on CNTs is negatively correlated with melting points of aromatic compounds, and surface oxygen-containing group contents and surface area ratios of mesopores to total pores of CNTs, but positively correlated with total surface area of CNTs. Adsorption affinity is positively correlated with solvatochromic parameters of aromatic compounds, independent of tube lengths and surface oxygen-containing group contents of CNTs, but negatively correlated with surface area ratios of mesopores to total pores of CNTs. The correlations of adsorption capacity and adsorption affinity with properties of both aromatic compounds and CNTs clearly have physical significance, can be used successfully with DA model to predict adsorption of aromatic compounds on CNTs from the well-known physiochemical properties of aromatic compounds (i.e., solvatochromic parameters, melting points) and CNTs (i.e., surface area and total acidic group contents), and thus can facilitate the environmental application of CNTs as sorbents and environmental risk assessment of both aromatic contaminants and CNTs.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF CHROMATOGRAPHY A
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2014
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IF 4.258
Shao-Ting Wang,Wei Huang,Yi-Fan Deng,Qiang Gao,Bi-Feng Yuan,Yu-Qi Feng
The metal oxide affinity chromatography (MOAC) materials have been extensively used for extraction of phosphate compounds in the past decade. Actually, some of these materials also possess adsorption affinity towards cis -diol-containing compounds, which was seldom explored in separation field so far. Here we present the proof-of-concept study to evaluate the feasibility of expanding MOAC for specific capture of cis -diol biomolecules. Benefitting from the high commercialisation of the metal oxide materials, such MOAC strategy possesses several advantages, like synthesis-free, low cost and high expandability. Firstly, the recognition of adenosine against 2′-deoxyadenosine was performed using zirconium oxide and cerium oxide, two typical commercial MOAC materials. The results showed that efficient adsorption and elution could be achieved easily by pH switching from basic to acidic. The isotherm curves demonstrated the adsorption process fitted well with Freundlich isotherm model and was spontaneous at room temperature (Δ G 0 < 0) with an exothermic nature (Δ H 0 < 0). Afterwards, the highly efficient and selective enrichment of various model cis -diol biomolecules, including ribonucleosides, glycopeptides and glycoproteins, was achieved using this MOAC strategy. Finally, the endogenous ribonucleosides and modified ribonucleosides were successfully purified from human urine sample, which demonstrated the potential application of MOAC materials in the enrichment of target compounds from complex biological samples. Besides the excellent performance of extraction for cis -diol-containing compounds, equally important is that these materials are commercially available with low cost, which makes the MOAC a promising strategy for the study of cis -diol biomolecules in metabolomics and proteomics.
研究领域:
分析化学
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生物化学
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代谢组学
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蛋白质组学
✓ 已验证
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2022
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IF 10.753
Pingping Wang,Junli Cao,Liangang Mao,Lizhen Zhu,Yanning Zhang,Lan Zhang,Hongyun Jiang,Yongquan Zheng,Xingang Liu
The application of chemically modified biochar is a promising strategy for the remediation of contaminated (e.g., pesticides) soil. In this study, H 3 PO 4 was used to modify peanut shell to improve the remediation performance of biochar. Surface area (980.19 m 2 /g), pore volume (0.12 cm 3 /g), and the functional groups ( OH, C O, and phosphorus-containing groups) on the biochar were increased by H 3 PO 4 treatment. The sorption experimental data were well fitted by Freundlich model, while the sorption affinity ( K f ) of H 3 PO 4 modified biochar (PBC) for atrazine was 128 times greater than that of the untreated biochar (BC) in the aquatic systems. The K f values of PBC-amended soil to atrazine were increased by 13.57 times than that of single soil. The strong sorption of PBC on atrazine delayed the degradation of atrazine in soil, and the residual percentage of atrazine in soil and soil-PBC mixture were 4.90% and 71.44% at the end of 60-day incubation, with the degradation half-life increased from 13.3 to 121.6 d. The analysis of high-throughput sequencing results showed that atrazine reduced the diversity of soil microbial community, but the abundance of microorganisms with degradation function increased and became dominant species. The addition of PBC in soil accelerated the microbial remediation of atrazine stress, which may promote the soil nitrogen cycle. Therefore, amendment of atrazine contaminated soil with PBC can reduce the environmental risk of atrazine and benefit the soil microbial ecology.
研究领域:
环境科学
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土壤学
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微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-8
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IF 14.7
Hu Laigang,Wu Wenhao,Hu Min,Jiang Ling,Lin Daohui,Wu Jian,Yang Kun
Double-walled metal-organic frameworks (MOFs), synthesized using Zn and Co, are potential porous materials for trace benzene adsorption. Aluminum is with low-toxicity and abundance in nature, in comparison with Zn and Co. Therefore, a double-walled Al-based MOF, named as ZJU-520(Al), with large microporous specific surface area of 2235 m 2 g –1 , pore size distribution in the range of 9.26–12.99 Å and excellent chemical stability, was synthesized. ZJU-520(Al) is consisted by helical chain of AlO 6 clusters and 4,6-Di(4-carboxyphenyl)pyrimidine ligands. Trace benzene adsorption of ZJU-520(Al) is up to 5.98 mmol g –1 at 298 K and P/P 0 = 0.01. Adsorbed benzene molecules are trapped on two types of sites. One (site I) is near the AlO 6 clusters, another (site II) is near the N atom of ligands, using Grand Canonical Monte Carlo simulations. ZJU-520(Al) can effectively separate trace benzene from mixed vapor flow of benzene and cyclohexane, due to the adsorption affinity of benzene higher than that of cyclohexane. Therefore, ZJU-520(Al) is a potential adsorbent for trace benzene adsorption and benzene/cyclohexane separation.
研究领域:
材料科学
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化学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Mingming Xu,Liying Guo,Yicheng Wang,Qianqian Wang,Lin Hao,Chun Wang,Qiuhua Wu,Zhi Wang
In this work, three aromatic heterocycle-based porous organic frameworks (heterocyclic POFs) were prepared through a simple Friedel-Crafts alkylation of furan, thiophene and pyrrole with p -dimethoxybenzene as crosslinker. The prepared heterocyclic POFs, featuring abundant heteroatoms and extended conjugated system, displayed high adsorption affinity for nitroimidazoles (NDZs) antibiotics. So, they were applied as adsorbents for solid phase extraction of NDZs (metronidazole, ronidazole, dimetridazole, ornidazole) from chicken meat before their determination by high performance liquid chromatography-ultraviolet detection. Good linearity range (2.0–100.0 ng g −1 ), low limits of detection (0.6–1.2 ng g −1 ), high recovery (84.0–114.5%) and satisfactory precision (relative standard deviations < 10%) for the NDZs were obtained under the optimized conditions. The developed method was successfully applied to determine NDZs s in chicken meat. This work provided a good alternative for the rapid and effective detection of trace NDZs residues in chicken meat samples.
研究领域:
分析化学
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食品科学
·
药物分析
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Qingxiang Xu,Long Zhao,Yuhan Ma,Rui Yuan,Maosong Liu,Zhaoli Xue,Henan Li,Jianming Zhang,Xinping Qiu
Charge states at the catalytic interface can intensely alter the charge transfer mechanism and thus the oxygen reduction performance. Two symmetric cobalt porphyrins with electron deficient 2,1,3-benzothiadiazole (BTD) and electron-donating propeller-like triphenylamine (TPA) derivatives have been designed firstly, to rationally generate intramolecular partial charges, and secondly, to utilize the more exposed molecular orbitals on TPA for enhancing the charge transfer kinetics. The catalytic performance of the two electrocatalysts was examined for oxygen reduction reactions (ORR) in acidic electrolyte. It was found that BCP1/C with two BTD groups showed greater reduction potential but less limiting current density as compared to BCP2/C bearing BTD-TPA units. The reduced potential of BCP2/C was proposed to the introduction of the electron-donating ability of TPA, which may decrease the adsorption affinity of oxygen to the cobalt center. Both dipole-induced partial charge effect and the more exposed cation orbitals of the 3D structural TPA were proposed to contribute to the increased response current of BCP2/C . In addition, BCP2/C attained more than 80% of H 2 O 2 generation in acidic solution, which may also relate to the structural effect. These findings may provide new insight into the structural design of organic electrocatalysts and deep understanding on the interfacial charge transfer mechanism for ORR.
研究领域:
电化学
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催化
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2023
·
IF 8.4
Wen-Ting Li,Jia-Si Wang,Meili Pang,Yue Li,Wen-Juan Ruan
The incorporation of multiple sensing elements to a single sensor has been proposed by our group as an improvement for the array sensing technique with retaining the high selectivity of traditional multi-sensor based sensor array but largely simplifying the analytical operation. How to select reasonable sensing elements to construct the sensor is the key to improve the analytical performance. Herein, we propose a concept to solve this issue, that is, using the components which test different properties of analytes to discriminate them from various aspects. As a proof-of-principle trial, a MOF based composite sensor was designed to analyze tetracycline type antibiotics. The porphyrin-containing main ligand, naphthyl auxiliary ligand and rhodamine B guest were installed to response to the redox property, adsorption affinity and absorption/exchanging capability of the analyte, respectively. Six tetracycline homologous were clearly identified by this sensor, and it also exhibited good quantification performance. This method was successfully applied to the analysis of practical milk sample.
研究领域:
分析化学
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材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Sichang Jiang,Zhi Li,Xiumin Yang,Min Li,Chun Wang,Zhi Wang,Qiuhua Wu
A novel hypercrosslinked polymer (API-HCP) was synthesized using as monomer for the first time. API-HCP exhibited high adsorption affinity toward chlorophenols due to the hydrogen bond, halogen bond and π-stacking interactions. With API-HCP as adsorbent, an efficient solid phase extraction method coupled with high performance liquid chromatography (SPE-HPLC) was established for the sensitive detection of chlorophenols in water and honey samples. Under the optimum conditions, the method provided a good linear response in the range of 0.07–100 ng mL −1 for water and 1.7–500 ng g −1 for honey sample. High sensitivity was achieved, with detection limits (S/N = 3) of 0.02–0.07 ng mL −1 for water and 0.5–1.5 ng g −1 for honey samples. The method recoveries for spiked sample were between 84.0 % and 116.0 %, with relative standard deviations ≤6.1 %. The API-HCP based SPE-HPLC method provided a robust platform for sensitive determination of chlorophenols in water and honey samples.
研究领域:
环境科学
·
分析化学
·
材料科学
✓ 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）