JOURNAL OF HAZARDOUS MATERIALS
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2025
·
IF 11.3
Wenjie Li,Pengfei Mao,Xuwen Chen,Wanting Ling,Chao Qin,Yanzheng Gao
Developing efficient passivating sorption materials for the treatment of combined pollution by phthalate esters (PAEs) and Cd 2+ has become a critical focus in environmental protection and soil remediation. In this study, biochar-sulfhydryl modified montmorillonite composites (BC-SHMMT) were synthesized, characterized, and evaluated for the co-sorption of PAEs (DMP, DEP) and Cd 2+ . The integration of sulfhydryl-modified montmorillonite (MMT-SH) with biochar improved the material's surface structure, enhancing both co-sorption capacity and structural stability. Molecular dynamics simulation indicated a monolayer chemical sorption of pollutants by BC-SHMMT, in alignment with the sorption theoretical model. In the co-sorption system, the coexistence of pollutants increased the adsorption of Cd 2+ and decreased the sorption of PAEs. The smaller molecular size and higher diffusion coefficient of Cd 2+ facilitated its pore filling and interaction with oxygen-containing functional groups of the material, leading to competition with PAEs for sorption sites. Notably, the ion exchange and complexation of Cd 2+ adsorption by MMT-SH are pivotal in enhancing BC-SHMMT co-sorption capacity. These findings provide valuable insights into the development of eco-friendly novel materials and the improvement of co-pollution remediation efficiency.
研究领域:
环境科学
·
土壤修复
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL MONITORING AND ASSESSMENT
·
2025
·Vol. 197
·期 6
·1-17
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IF 3
Ahmad Iftikhar Ali,Hu Hongqing,Islam Md. Shoffikul,Fu Qingling,Zhu Jun,Miao Fei,Mehran Muhammad,Haider Sharjeel,Murad Zaryab,Ali Ayaz
The coexistence of cadmium (Cd(II)) and arsenic (As(III)) has long been an environmental problem. Green and cost-effective biochar (BC) shows considerable potential for addressing environmental issues, including the concurrent elimination of cadmium (Cd(II)) and arsenic (As(III)) from water and soil after nano-sized goethite modification. However, the behavior of goethite-modified rice straw-derived biochar (GBC) during co-adsorption of Cd (II)) and As (III)) in the presence of competing ions and anoxic vs oxic environments is unclear yet. This experiment (GBC) was successfully synthesized to study co-adsorption and the effects of environmental factors on it. The adsorption kinetics and isotherms for the mixed adsorption of Cd(II) and As(III) onto GBC showed that the pseudo-2nd-order model ( R 2 Cd(II) = 0.998, R 2 As(III) = 0.996) and the Langmuir model ( R 2 Cd(II) = 0.982, R 2 As(III) = 0.997) were both correctly portrayed. The highest adsorption of As(III) was 87.38 mg/g, and Cd(II) was 71.07 mg/g in a single adsorption system, which is considerably more significant than the values of 68.6 and 48.38 mg/g, correspondingly, in the co-adsorption system. The competitive adsorption of Cd(II) and As(III) on GBC was primarily driven by co-precipitation and ion exchange. Its efficacy in soil systems under aerobic and anaerobic situations remained undisturbed. At the same time, the anaerobic environment favors Cd adsorption, and the aerobic environment favors more As remediation in an aqueous system. The interactive ions Ca 2+ and Mg 2+ significantly enhanced the adsorption of As(III). On the other hand, phosphate and humic acid significantly promote Cd(II) adsorption. In summary, the different environmental conditions revealed by this study help a deeper understanding of the behaviors of As and Cd by GBC.
研究领域:
环境科学
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土壤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
·
2019
·
IF 4.527
Chenlu Fu,Hongling Zhang,Mingzhu Xia,Wu Lei,Fengyun Wang
An eco-friendly corncob biochar based montmorillonite composite (Cc-Mt) was synthesized for the single adsorption and co-adsorption of lead (Pb(II)) and a pharmaceutical emerging organic contaminant Atenolol (ATE). In single adsorption system, the maximum equilibrium capacity of Cc-Mt for Pb (II) and ATE were 139.78 mg g −1 and 86.86 mg g −1 , respectively, but for montmorillonite just 98.69 mg g −1 and 69.68 mg g −1 , for corncob biochar just 117.54 mg g −1 and 47.29 mg g −1 . Meanwhile,co-adsorption properties of ATE and Pb(II) on Cc-Mt composite were performed and found that the influence of ATE on the adsorption of Pb(II) was greater than the effect of Pb(II) on that of ATE. Moreover, Multiwfn program based on quantum chemical calculation was used to quantitatively analyze electrostatic potential (ESP) distribution, average local ionization energy (ALIE) distribution and their minimum points on neutral ATE and protonated ATE (PATE) molecules to reveal the microscopic adsorption mechanism of Cc-Mt composite to ATE, the results showed that the amino N and amide oxygen atom were easier to provide lone pair of electrons, generating hydrogen bonds or strong electrostatic interactions with functional groups on the surface of Cc-Mt, meanwhile hydroxyl O atom was also a possible reaction site. For PATE molecules, only the oxygen atom of the amide group was the most likely reactive site.
研究领域:
环境科学
·
化学
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Shiyu Hou,Yiliang Tang,Tianle Zhu,Zheng-Hong Huang,Yingshu Liu,Ye Sun,Xiang Li,Fangxia Shen
Adsorptive removal of gas phase low concentration macromolecular organic component, represented by naphthalene , from the enclosed space using ordered mesoporous carbon (OMC) has been studied by molecular simulation and experimental investigation. The simulation results indicated that both adsorption capacity and adsorption stability of the OMCs for naphthalene decreased with the increase of pore sizes from 2 nm to 8 nm. Characterizations showed that the prepared OMCs had the pore structure similar to the simulated OMCs except for the rough surface. In particular, the adsorption performance of the prepared OMCs was significantly lower than that of the simulated OMCs when pore size was 2 nm and 3 nm, which was attributed to the rough inner surface of these adsorbents, blocking the narrow pore channels and significantly reducing the pore volume . OMC with pore size of 4 nm had the highest adsorption amount for naphthalene. The co-adsorption experiments in the presence of both naphthalene and toluene, acetone or water showed the adsorption performance of OMCs for naphthalene were almost unaffected by the presence of low concentration toluene and acetone, as well as high relative humidity.
研究领域:
环境科学
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吸附科学
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材料科学
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大气污染控制
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物理化学
✓ 已验证
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2021
·
IF 10.588
Yiping Feng,Guang Chen,Yijian Zhang,Daguang Li,Chen Ling,Qiaoying Wang,Guoguang Liu
Development of economic and efficient absorbent for the simultaneous removal of antibiotics and heavy metals is needed. In this study, a three-dimensional porous ultrathin g-C 3 N 4 (UCN) /graphene oxide (GO) hydrogel (UCN-GH) was prepared by co-assembling of UCN and GO nanosheets via the facile hydrothermal reaction . Characterizations indicated that the addition of UCN significantly decreased the reduction of C O and O-C O related groups of GO during the hydrothermal reaction and introduced amine groups on UCN-GH. The UCN-GH exhibited excellent ability on the co-removal of Cu(II) ( q max = 2.0–2.5 mmol g −1 ) and tetracycline (TC) ( q m ax = 1.2–3.0 mmol g −1 ) from water. The adsorption capacities were increased as UCN mass ratio increasing. The mutual effects between Cu(II) and TC were examined through adsorption kinetics and isotherm models. Characterizations and computational chemistry analysis indicated that Cu(II) is apt to coordinate with the amine groups on UCN than with oxygen groups on GO, which accounts for the enhanced adsorption ability of UCN-GH. In the binary system, Cu(II) acts as a bridge between TC and UCN-GH enhanced the removal of TC. The effects of pH and regular salt ions on the removal of Cu(II)/TC were examined. Moreover, the prepared UCN-GH also showed comparable co-adsorption capacities in practical water/wastewater.
研究领域:
环境科学
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材料科学
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化学工程
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纳米技术
·
水污染控制
✓ 已验证
DOI
高影响因子
KOREAN JOURNAL OF CHEMICAL ENGINEERING
·
2020
·Vol. 37
·期 11
·1926-1932
·
IF 2.69
Bai Hongjuan,Chen Junhang,Zhou Xiangyu,Hu Chengzhi
Simultaneous removal of dyes in the effluents of printing and dyeing industries is challenging, and the mechanism of the co-adsorption of dyes is still unclear. In this context, a novel adsorbent based on microcrystalline cellulose from cotton fiber through a simplified chemical modification process was prepared. Methylene blue (MB) and neutral red (NR) were selected to investigate their adsorption/co-adsorption on such functionalized microcrystalline cellulose. The experimental adsorption results indicated that the adsorption quantity of both dyes was similar for the single solute. The kinetics of adsorption processes could be better described with the pseudo-second order models for both single and binary dye solutes. The results of the co-adsorption suggested that the extended Langmuir model could well predict equilibrium. The maximum adsorption capacity of MB and NR for the single systems was 115.2 and 83.2 mg/g, respectively. Moreover, an antagonistic effect could be found in the binary dye solute. The obtained results revealed that the co-adsorption of dyes might be driven by hydrogen bonding, π-π stacking interaction as well as electrostatic interaction.
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Kun Gao,Zhongyan Gong,Xinya Chen,Yulong Zhang,Haonan Chen,Lu Jiang,Chengcheng Zhu,Miao Ji,Yaning Liu,Yingying Cai,Gongqiang Li,Gang Lu
Electrochemical reduction of carbon dioxide (CO2RR) is a promising strategy for mitigating global warming and producing value-added products simultaneously. Molecular catalysts, such as cobalt phthalocyanine (CoPc), are known to be effective in converting carbon dioxide (CO2) to carbon monoxide (CO). However, it is still challenging to improve the reaction rate and selectivity of this conversion. Herein, we report a simple and effective coadsorption strategy to promote the reaction rate and selectivity of CoPc-catalyzed CO2RR to CO by coadsorbing melamine molecules together with CoPc onto the surface of carbon nanotubes (CNTs). The coadsorption of melamine led to an increase in the output current density for 2.6-fold at an overpotential of −1.23 V vs Ag|AgCl. Moreover, the Faraday efficiency (FE) toward CO increased to 92% in an H-type cell, in contrast to the FE of 85% in the absence of melamine coadsorption. The FE toward CO further improved to 99% in a flow cell system. It was revealed that the coadsorption of melamine could modulate the surface adsorption of the *CO intermediates and decrease the energy barrier of CO2 reduction to CO. More importantly, only a solution-based process was employed in the whole procedure and no organic synthesis was involved, making our method highly simple, convenient, and environment friendly. This work paves an effective way for modulating the activity and selectivity of molecular catalysts in the CO2RR.
研究领域:
化学
·
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Ruien Hou,Shuai Yuan,Xin Ren,Yin Zhao,Zhuyi Wang,Meihong Zhang,Dongdong Li,Liyi Shi
Acetyl acetone and its derivatives, 3-butyl-2,4-pentanedione and 3-phenyl-2, 4-pentanedione are investigated as co-adsorbents of photoelectrodes for dye-sensitized solar cells (DSSC). The DSSC based on 3-phenyl-2,4-pentanedione co-adsorbent shows the best photovoltaic performance: a maximum monochromatic incident photon-to-current conversion efficiency (IPCE) of 67.3%, a short-circuit photocurrent density (J SC ) of 15.73 mA cm 2 , an open-circuit photo-voltage (V OC ) of 0.74 V and a fill factor (FF) of 0.69, corresponding to an overall conversion efficiency of 8.07% under the standard global AM 1.5 solar light condition. Electrochemical impedance (EIS) data and open-circuit voltage decay (OCVD) data indicate that the electron lifetime is improved by co-adsorption of 3-phenyl-2,4-pentanedione, it is associated with the 3-phenyl-2,4-pentanedione co-adsorbent forms a protect layer of TiO 2 which can inhibit the electron recombination efficiently. The results confirm that the acetyl acetone-typed co-adsorbents with less effect on the adsorption of dye , more hydrophobic structure and stronger electron donating ability, such as 3-phenyl-2,4-pentanedione, can improve the performance of DSSC.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）