INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Long Zhou,Longwei Yin,Zuliang Chen
Arsenic (As) contamination in groundwater is a growing global environmental issue, and effectively removing both As(III)) and As(V) from groundwater presents a significant challenge. In this study, a novel functional composite, FePd@ZIF-8, was synthesized using a two-step method for the simultaneous removal of As species. It was observed that FePd@ZIF-8 achieved removal efficiencies of 89.42 % for As(V) and 32.74 % for As(III), respectively. Characterization confirmed the successful synthesis of FePd@ZIF-8 and demonstrated that the valence state of As(V) and As(III) remained unchanged during the removal process. XPS and FTIR analyses revealed that the As species was adsorbed onto the surface of the material through complexation. The adsorption isotherms and kinetics indicated that the removal process was dominated by chemisorption. In groundwater applications, FePd@ZIF-8 could still achieve 85.62 and 70.46 % removal efficiency for As(V) and As(III) after four cycles, respectively. This study demonstrates that FePd@ZIF-8 holds significant potential for effectively removing As species from groundwater.
研究领域:
环境科学
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纳米技术
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水处理
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材料科学
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吸附技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2025
·
IF 1.6
You Yanran,Zhu Hongtao,Dong Hongliang,Sheng Guodong
In this work, FeS was anchored on mesoporous silica microspheres (SiO 2 200, SiO 2 500, and SiO 2 1000), and named as FeS@SiO 2 (i.e., FeS@SiO 2 200, FeS@SiO 2 500, FeS@SiO 2 1000), in adsorbing and detoxifying U(VI)/Cr(VI) from wastewater. Results demonstrated that FeS@SiO 2 exhibited higher efficiency towards U(VI)/Cr(VI), outperforming FeS and SiO 2 alone. Kinetic investigations revealed that adsorption of U(VI)/Cr(VI) followed pseudo–second–order model best, highlighting effective chemical interplay. XPS investigations demonstrated multi–species which was included FeS, Fe(II), S 2− and polysulfide (S 2 2− , S n 2− ) could be employed as reductants for U(VI)/Cr(VI) adsorption. The combination of SiO 2 and FeS offered an enhanced efficiency for U(VI)/Cr(VI), making these composites promising materials in water purification. Graphical
研究领域:
环境科学
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纳米技术
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材料科学
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水处理
·
化学工程
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产品关联
DOI
高影响因子
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION
·
2025
·Vol. 40
·期 4
·1176-1185
·
IF 1.1
Hu Zhengsheng,Tang Xu,Gao Shilong,Li Yingguang,Wang Jiawei,Chen Yanjun,Wang Yifeng
Modified activated carbons (AS) were fabricated through the oxidation effect of ammonium persulfate and applied to the dynamic adsorption of different acrylate gas. The pore structures, surface chemical properties and surface morphology of AS were respectively characterized by N 2 adsorption, Boehm titration, X-ray Photoelectron Spectroscopy (XPS) and scanning electron microscopy (SEM) techniques. After modification, the specific surface area increased from 954 to 1 154 m 2 ·g −1 . The contents of oxygen-containing functional groups on the AS surface increase obviously and have a great effect on the adsorption behavior of acrylate gases. According to the results of dynamic adsorption, the adsorption capacities of acrylates are as the following order: methyl acrylate (461.9 mg·g −1 ) > methyl methacrylate (436.9 mg·g −1 ) > butyl acrylate (381.8 mg·g −1 ), which is attributed to the size adaptability of AS pores and acrylates. The adsorption behavior of AS for acrylate gases conforms to the Bangham model and the Temkin model.
研究领域:
环境科学
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化学工程
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材料科学
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物理化学
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分析化学
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2019
·
IF 3.375
Qun Li,Tareque Odoom-Wubah,Yaping Zhou,Rafal Mulka,Yanmei Zheng,Jiale Huang,Daohua Sun,Qingbiao Li
The search for efficient and durable catalysts for volatile organic compounds oxidation is essential for environmental remediation. Herein, porous coral-like cobalt–manganese oxide (CoMnOx) catalyst was synthesized through annealing Co–Mn–1,3-propanediol precursors at 300 °C in air and applied for the catalytic oxidation of benzene. The as-prepared CoMnOx exhibited uniform porous coral-like structure, with an improved benzene catalytic abatement performance as compared to those of Mn3O4 and Co3O4 samples prepared by the same method, respectively. According to BET, H2-TPR, O2-TPD, and XPS analysis, the as-obtained CoMnOx catalyst showed the highest BET surface area, better low-reducibility temperature, and high content of absorbed oxygen groups when compared to Mn3O4 and Co3O4, which makes significant contribution to its catalytic benzene oxidation activity. Moreover, a plausible surface reaction mechanism for benzene oxidation over CoMnOx catalyst was also proposed through the in situ DRIFTS study.
研究领域:
环境科学
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催化
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Junjun Wang,Peng Lin,Weiyang Yu,Peng Xu,Bowen Zhang,Guohua Cao
Pt-loaded curling-like Bi 2 WO 6 (BWO) microdiscs were fabricated via a simple one-step hydrothermal and impregnation route. Various characterization methods, such as XRD, EDS and TEM, were conducted to prove the successful Pt loading. Electron migration from the semiconductor BWO to the precious metal Pt was revealed by the blue shift of the Bi 4f and W 4f XPS peaks with the increase of the Pt loading amount and the ∼10-fold baseline resistance elevation of the BWO-based sensor by the Pt loading, proving the formation of Schottky junction. Among the pristine BWO and Pt-loaded BWO with different Pt loading amounts, 1 wt % Pt-loaded BWO exhibits the highest gas response of 209 in sensing 500 ppm triethylamine at 300 °C, a minimal selectivity coefficient of 130.6 against some typical interfering gases at the same concentration and a low detection threshold of 1 ppm. Additionally, the sensitization mechanism is discussed as the synergistic effect of noble metal catalytic effect and metal-semiconductor junctions.
研究领域:
材料科学
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化学传感器
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Qi Zhao,Wei Li,Pan Guo,Qing Cheng,Qiao Ding,Tong Liu,Ning Li,Bo Wu,Qinmin Pan,Yanling Xu,Deyu Li
The widespread use of electrolytic copper (EC) foil in lithium-ion batteries and printed circuit boards makes its corrosion and oxidation resistance critical to performance and durability. However, the protective performance of single corrosion inhibitors is limited, highlighting the urgent need for high-performance composite corrosion inhibitors. Herein, we systematically investigate the synergistic effects of 5-mercapto-1-methyl-1H-tetrazole (MMTZ) and carboxylic acid polymers (polyacrylic acid (PAA), hydrolyzed poly maleic anhydride (HPMA), and maleic acid-acrylic acid copolymer (MAAA)) in enhancing the corrosion resistance and antioxidant performance of EC foil. Compared to single corrosion inhibitors, composite inhibitors significantly improve the corrosion resistance and antioxidant performance of EC foil. When used individually, the corrosion inhibition efficiency of MMTZ and MAAA is only 83.99 % and 44.76 %, respectively, while the corrosion inhibition efficiency of the MMTZ-MAAA composite system reaches 96.95 %, and it can still significantly delay the oxidation discoloration of EC foil at 200°C. The XPS and molecular dynamics simulation results further confirm the synergistic effect between the carboxylic acid inhibitors and MMTZ. Specifically, these components interact to form a stable and compact protective barrier on the EC foil surface through spatially complementary interactions. This work offers theoretical insights and new directions for designing high-performance composite corrosion inhibitors for EC foil.
研究领域:
材料科学
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电化学
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表面化学
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高分子科学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
·
2025
·
IF 2
Su Zifei,Shi Chunjing,Meng Fanning,Yang Ying,Yang Jinyao,Wang Zhihui,Wang Menghang,Cao Chun
Cleaning of silicon (Si) wafers has become the key process in integrated circuit (IC) manufacturing, improving the quality and usability of Si wafers. However, traditional cleaning slurries usually contain strong and corrosive acids and alkalis, resulting in the potential damages to the environment and operators, as well as corrosion to Si wafers and production of wastes. To solve this challenge, a novel green slurry was developed, including Sodium carbonate and Citric acid. Under the action of the developed slurry, Si wafers were treated via synergetic effect between interval ultrasonication and paddle stirring. Orthogonal tests were performed through adjusting the concentration of Sodium carbonate and Citric acid, and time and temperature of cleaning. Energy-dispersive spectroscopy (EDS) analysis has revealed that the surface impurities on Si wafers reach their lowest levels (Na < 0.3%, Fe < 0.15%) under specific processing conditions. These optimal conditions include a Sodium carbonate concentration of 12 wt.% and a Citric acid concentration of 10 wt.%. Additionally, the processing temperature should be maintained at 45 °C, with a duration of 50 min. Prior to and after cleaning, surface roughness Ra of Si wafer is reduced from 9.39 ± 0.38 to 5.56 ± 0.51 nm. Combining x-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectrometer (FTIR) analysis, these impurities, such as oxyacid, organics, metallic oxides and metal ions, were removed from the Si wafers under different acidic and alkaline environments, through chelation and redox reactions. Therefore, the developed green slurry and novel approach using chemical and ultrasonic composite fields provide new insights for the cleaning and manufacturing of Si wafers.
研究领域:
半导体制造
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材料科学
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表面工程
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环境化学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Communications
·
2022
·
IF 3.662
Weidong Li,Qiuyi Chen,Dongyun Zhang,Chen Fang,Song Nian,Wenxu Wang,Cong Xu,Chengkang Chang
Aiming for promoting the capacity and cycling stability of O3-type NaNi 1/3 Fe 1/3 Mn 1/3 O 2 (NFM), the cathode material of sodium ion batteries (SIBs) with the most potential for industrialization, Na(Ni 1/3 Fe 1/3 Mn 1/3 ) 0.99 Mo 0.01 O 1.99 F 0.01 (NFM-MoF), Na(Ni 1/3 Fe 1/3 Mn 1/3 ) 0.99 Mo 0.01 O 2 (NFM-Mo) and NaNi 1/3 Fe 1/3 Mn 1/3 O 1.99 F 0.01 (NFM-F) were successfully synthesized by solid phase method. The electrochemical performance of the doped samples was compared with that of the pristine NFM. The mechanism of the single- or dual-doping was explored by XRD Rietveld refinement and XPS. The NFM-MoF exhibits the highest initial specific discharge capacity of 137mAhg −1 at 1 C with a retention of 91.97% after 100 cycles and the smallest polarization (0.32 V), which could be contributed to the highest Ni 2+ content and highest D Na + (7.335 ×10 −13 cm 2 ·s −1 ) caused by the synergistic effect of Mo and F dual-doping. The highest Fe 3+ content in the NFM-Mo leads to the higher initial discharge capacity of 1 36 mAhg −1 at 1 C with a relative lower retention of 83.38%, which is due to the structure instability resulting from Fe migration and the lowest Mn content, than that of the NFM-F (85.31%). It illustrates that the Mn 4+ plays a crucial role in stabilizing the structure during Na + migrating. The superiority of the discharge capacity of the NFM-Mo become narrow with rates rise, due to its lower D Na + (4.229 ×10 −13 cm 2 ·s −1 ) than that of the NFM-F D Na + (5.681 ×10 −13 cm 2 ·s −1 ). It verifies that it is a diffusion control process at high rates. Mo and F dual-doping in NFM was proved to amplify the benefit of Ni 2+ increasing, meanwhile restrain undesirable Fe increasing due to the synergistic effect.
研究领域:
材料科学
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电化学
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储能技术
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无机化学
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固体物理
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Xiangchao Zhao,Yuansong Luo,Xiujian Zhao
NASICON-type solid electrolyte Li 1.3 Al 0.3 Ti 1.7 (PO 4 ) 3 (LATP) has become an excellent substitute for organic liquid electrolytes due to its high ionic conductivity and exceptional air stability. However, its application is limited by its poor sintering characteristics and high grain boundary resistance. In this study, TeO 2 was introduced into LATP as a sintering aid to promote its sintering, and its properties were measured by XRD , SEM, XPS, EIS and dilatometry . The results show that the addition of TeO 2 can form eutectic liquid phase in LATP ceramic pellets during sintering, thus effectively promoting particle sintering. Not only the grain size was greatly increased, but also grain boundary and pore defects were reduced. With the help of TeO 2 , the performance of LATP is greatly improved when sintered at only 750 °C, the relative density and total ionic conductivity reached 90.64% and 0.207 mS/cm, respectively. The highest total ionic conductivity of 0.279 mS/cm and the highest relative density of 93.81% were obtained when sintered at 800 ℃ and 950 ℃, respectively. However, due to the volatilization of Li and Te at high temperature, the relative density and total ionic conductivity of LATP with TeO 2 added sintered at high temperature have only a small increase compared to that without addition. In conclusion, this study provides a feasible scheme for improving LATP performance.
研究领域:
材料科学
·
电化学
·
固体物理
✓ 已验证
DOI
高影响因子
Sustainable Energy & Fuels
·
2019
·Vol. 4
·期 4
·1621-1629
·
IF 4.912
Yachao Du,Qingwen Tian,Jin Huang,Yuechao Zhao,Xiaohuan Chang,Afei Zhang,Sixin Wu
Additional elements in Cu2ZnSn(S,Se)4 (CZTSSe) absorber layers present a viable strategy to improve the performance of thin film solar cells. In this study, heterovalent cation doping by partially substituting metal cations with Ga3+ is explored by constructing a sandwich-like configuration. We demonstrated that a low doping level of Ga3+ can be successfully incorporated into the host lattice of CZTSSe to form a homogeneous Cu2ZnSn(Ga) (S,Se)4 (CZTGSSe) alloy material. Characterization was performed using SEM, EDS, XRD, Raman spectroscopy, and XPS, which showed that the material fabricated by this heterovalent cation doping method expressed high phase purity, appropriate valence components, and suitable optical bandgap, which are vital for high performance solar cells. As a result, the champion device achieves stabilized efficiency as high as 10.80%, improved by nearly 28% compared with only 8.43% for the reference device.
研究领域:
材料科学
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太阳能
·
半导体物理
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产品关联
DOI
高影响因子
Environmental Technology & Innovation
·
2023
·
IF 7.1
Hong-Yan Wang,Amit Kumar,Jin Li,Peng Chen,Zhi-Guo Yu,Guo-Xin Sun
Lanthanum (La)-loaded biochar (BC) was considered as an efficient adsorbent for phosphate removal in wastewater. Arsenate has a similar chemical structure to phosphate, however, performance and mechanisms of arsenate adsorption onto La-doped biochar are less studied and remain unclear. In this study, La-modified biochar (BC) was prepared using two dinstinct methods: pyrolysis of LaNO 3 -doped rice husk (pre-pyrolysis modification, referred to as La-BC) and pyrolysis of LaNO 3 -doped rice husk biochar (post-pyrolysis modification, referred to as BC-La). Isotherm experiments showed that the maximum arsenate adsorption content onto La-BC and BC-La was similar, respectively of 21.3 mg g −1 and 16.5 mg g −1 at pH = 5. Combined results of SEM-EDS, FTIR, and XPS analyzing revealed that La oxides and hydroxides loaded on BC played a vital role in arsenate adsorption. Electrostatic attraction and ligand exchange were considered as key mechanisms for arsenate adsorption. Compared to La-BC, the results revealed that La oxides/hydroxides exhibited more crystalline structures on BC-La. Moreover, the BC-La displayed more efficient adsorption capabilities over a wider pH range (pH 4–10) than La-BC. The XPS O1s spectra analysis confirmed the formation of different inner-sphere complexes on La-BC and BC-La. Results of this study revealed mechanisms of arsenate adsorption onto La-modified biochar, and highlighted that the adsorption behavior of arsenate onto La-modified biochar could be significantly influenced by modification methods.
研究领域:
环境科学
·
材料科学
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化学工程
·
水处理
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xu Zhang,Dongxiang Zhang,Dagang Li,Shusen Chen,Fengqi Zhang,Zilei Zhang,Haocun Tan,Le Yang,Jinzheng Hou,Runchao Tan,Jinying Li,Xiyan Xu
Carboxymethylcellulose-based zwitterionic cryogels (AO-PAM/CMC) with a supermacroporous pore structure were prepared through cryo-polymerization and post-modification strategies. The hydrogel exhibited a supermacroporous structure, excellent hydrophilicity, superior mechanical properties, and resistance to biological contamination. Through a comprehensive investigation of the U(VI) adsorption process, it was observed that the AO-PAM/CMC hydrogel was predominantly characterized by chemisorption, wherein uranyl ions were adsorbed on the surface in the form of a monolayer. Under the conditions of 45 °C and pH = 5.0, the hydrogel demonstrated remarkable adsorption performance, with the maximum adsorption capacity reaching 1223.6 mg∙g −1 , showcasing a high degree of selectivity for U(VI). In real seawater, the hydrogel's adsorption capacity for uranium reached 12.95 mg∙g −1 after 25 days of exposure, with the adsorption equilibrium being essentially reached in about 10 days. The adsorption mechanism of U(VI) by the hydrogel was confirmed through XPS spectroscopy and DFT calculations. The synergistic interplay between guanidino and zwitterionic moieties within the AO-PAM/CMC hydrogel enhanced U(VI) adsorption capacity and facilitated rapid uranium extraction from seawater. (UES). Therefore, the AO-PAM/CMC hydrogel presents a novel solution to address the inefficiencies of existing technologies for uranium extraction from seawater, contributing an innovative approach to the sustain-able development of nuclear energy.
研究领域:
环境科学
·
材料科学
·
核工程
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）