SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Shuang Zheng,Lin Ding,Feilong Hu,Yong Zhang,Zhaofeng Ouyang,Shujuan Yang
In this work, the novel metal organic frameworks/multi-branched nanocellulose (Ni-Zn MOF@Multi CNC) fillers with different three-dimensional nanostructures are fabricated via two in-situ growing strategies, which were blended into Polyether sulfone (PES) matrix to construct composite ultrafiltration (UF) membranes. Furthermore, the effects of two structures of fillers on construction and performance of composite membranes are detailed investigated here. The results confirmed that the obtained PES composite membranes exhibited excellent permeability and selectivity because of the ultra-high hydrophilicity, abundant pores, and more negative charge of Ni-Zn MOF@Multi CNC fillers. Besides, compared with nanosphere structure of Ni-Zn MOF@Multi CNC, the nanoflower filler could provide more pores and cavities to enable higher water permeance, and more active surface charge (more -COO- groups) to increase protein rejection. The Ni-Zn MOF@Multi CNC 0.05 /PES membrane showed an 83 % higher permeance (up to 1151.00 L/m 2 h) and greatly improved BSA rejection (99 %). The Ni-Zn MOF@Multi CNC 0.05 /PES membrane has been successfully applied to different wastewater treatment, and shows expectant ultrafiltration performance.
研究领域:
材料科学
·
环境工程
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CORROSION SCIENCE
·
2025
·
IF 8.5
Ru Yan,Xiao Zhang,Xiang Gao,Wei He,Houyi Ma
PAM formed by self-organization can be considered as nanocontainers of phytic acid (PA) molecules and used for the corrosion protection of metal materials. Herein, self-strengthening PAM-Zn conversion films were successfully constructed on CRS substrate by a simple dipping method. The highest protection efficiency of PAM-Zn films was 81.0 % and was further increased beyond 90 % after immersion in NaCl solution. The immersion treatment in NaCl solution not only promoted the formation of more P O 4 3 − and PAM-Zn complex, but also changed the surface microstructure and increased the film thickness and compactness, thereby leading to the great enhancement of anti-corrosion performance.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
Solar RRL
·
2020
·Vol. 4
·期 12
·2000551
·
IF 7.527
Muhammad Ishaq,Shuo Chen,Umar Farooq,Muhammad Azam,Hui Deng,Zheng-Hua Su,Zhuang-Hao Zheng,Ping Fan,Hai-Sheng Song,Guang-Xing Liang
Antimony sulfide (Sb 2 S 3 ) is emerging as a popular photovoltaic candidate for thin-film solar cells due to its large absorption coefficient, suitable bandgap, nontoxic, and earth-abundant nature. The performance of thermally evaporated Sb 2 S 3 devices is severely restricted by interfacial recombination leading to high open-circuit voltage ( V OC ) losses. CdS as electron transport layer (ETL) has overcome this problem, but triggered lower J SC issues due to parasitic absorption loss conceding to its smaller bandgap. Herein, a spray pyrolysis method is adopted for the deposition of a uniform and compact Zn-doped TiO 2 film with tuned energy levels to facilitate charge extraction and transport. The solar cell fabricated with a modified TiO 2 ETL holds superior interface quality, high build-in potential, and suppressed recombination losses, therefore pronouncedly improves the V OC . As a result, the efficiency of the device is boosted from 4.41% to 5.16%, a record V OC of 702 mV for Cd-free full-inorganic Sb 2 S 3 solar cell is achieved. These findings are expected to be implemented in other Sb-chalcogenide solar cells to further enhance the device performance.
研究领域:
材料科学
·
太阳能电池技术
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产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2018
·Vol. 25
·期 31
·30938-30948
·
IF 2.8
Guo Shuangzhen,Dan Zhigang,Duan Ning,Chen Guanyi,Gao Wubin,Zhao Weijie
A novel magnetic silica gel adsorbent (Fe 3 O 4 -Si-COOH) was successfully prepared by introducing carboxyl group in situ to improve the performance for Pb(II), Zn(II), and Cd(II) adsorption. Infrared spectroscopy (IR), scanning electron microscope (SEM), transmission electron microscope (TEM), thermo-gravimetric analyzer (TGA), the Brunauer-Emmett-Teller (BET) surface area, X-ray diffraction (XRD), and vibrating sample magnetometer (VSM) characterizations suggested that Fe 3 O 4 -Si-COOH has been successfully prepared. The adsorption performance was evaluated by batch experiments with different initial concentrations, ionic strength, contact time, and pH. The adsorption kinetics data followed pseudo-second-order model and exhibited a three-stage intraparticle diffusion mode. Isothermal adsorption equilibrium data were best fitted by the Freundlich model and the adsorption capacity were 155, 110, and 93 mg/g (initial concentration 210 mg/L) for Pb(II), Zn(II), and Cd(II), respectively. The result of X-ray photoelectron spectroscopy (XPS) survey spectrum suggested that the main adsorption mechanism is that the H + of carboxyl groups exchanged with heavy metal ions in the adsorption processes. In addition, the adsorbed Fe 3 O 4 -Si-COOH could be regenerated and the adsorption capacity of reused Fe 3 O 4 -Si-COOH could maintain 80.3% after five cycles. Hence, the Fe 3 O 4 -Si-COOH could be a kind of potential material for removing Pb(II), Zn(II), and Cd(II) from wastewater.
Graphical abstract
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
Journal of Environmental Sciences
·
2025
·
IF 6.3
Lei Wang,Zhe Li,Dongdong Tuo,Mingze Li,Mengtong Guo,Wenqian Zhang,Xiaodong Wang,Fuxin Hang,Ying Zhang
Heavy metal pollution is becoming increasingly severe, and rare earth elements (REEs) play a crucial role in influencing the environmental impact of heavy metals. Mixed heavy metal pollution presents a significant challenge due to its complex effects. While many studies have focused on single heavy metal pollution, relatively few have examined the pollution caused by rare earth-heavy metal composites. This study investigated the toxic effects of Ce-Zn compound pollution on maize roots and used the integrated biomarker response (IBR) to assess the toxicity of different concentrations of Ce-Zn compound pollution on maize roots. The results showed that Ce-Zn compound pollution had a threshold effect: promoting maize growth at low concentrations but inhibiting growth at a threshold concentration of Ce 50 mg/kg-Zn 50 mg/kg. Ce-Zn compound pollution-induced oxidative stress in maize. When the pollution concentration exceeded the threshold, the H₂O₂ content in maize roots increased by 3.30 and 3.56 times, respectively, compared to the CK group, while the O₂⁻ content increased by 1.45 and 1.48 times, respectively. Cell structure damage was observed, and the levels of antioxidant enzymes—peroxidase (POD), catalase (CAT), and superoxide dismutase (SOD)—in maize roots gradually increased. At low concentrations, the Ca²⁺ absorption rate in maize roots increased by 82.99 % compared to CK. By regulating the Ca²⁺ concentration, the absorption of H⁺ and other ions was affected, enhancing intracellular enzyme activity and improving the tolerance of maize roots to compound pollution. These findings enhance our understanding of the harmful effects of combined pollution from rare earth metals and heavy metals on plants.
研究领域:
植物学
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环境科学
·
毒理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 36
·13117-13123
·
IF 8.067
Wenbin Shi,Xiao Zhang,Hsueh Shih Chen,Katarzyna Matras-Postolek,Ping Yang
Lead-halide perovskite nanocrystals (NCs), such as red-emitting CsPbI3, have gained significant attention due to their promising applications such as display backlights, light-emitting devices, and lasers. However, it is still a great challenge to stabilize CsPbI3 NCs and further tune and optimize their luminescence properties. In this study, effective Zn-derived ligand engineering was successfully conducted to create highly stable and bright CsPbI3 NCs for LEDs. The phase stability of CsPbI3 NCs at room temperature was improved by Zn ion-derived 1-dodecanethiol (DDT) ligand engineering, in which the ratios of Zn/DDT play an important role. Under optimized conditions, the as-treated CsPbI3 NCs were well dispersed and revealed uniform size distribution and a high photoluminescence (PL) quantum yield of 95.4%. In addition, the treated CsPbI3 NCs retained the initial PL efficiency after being stored at room temperature for more than 100 days. No phase change occurred for the NCs under UV light irradiation and thermal cycling conditions. Finally, these CsPbI3 NCs were used for white light-emitting diodes, which had advantages in a wide color gamut and good stability.
研究领域:
材料科学
·
光学工程
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Yuxiang Sun,Caiyun Yan,Jun Xie,Dan Yan,Ke Hu,Shengxin Huang,Jianping Liu,Yu Zhang,Ning Gu,Fei Xiong
Previous reports from our team revealed the significant potential advantage of Mn–Zn ferrite nanoparticles (NPs) in magnetic resonance imaging (MRI), whereas anisotropic NPs reportedly increased the blood circulation time of nanocarriers. Thus, anisotropic Mn–Zn ferrite displayed a huge potential in cancer synchronous diagnosis and treatment, that is, enhanced MRI observation was performed simultaneously when drug-targeted delivery therapy was applied to the tumor. Here, we developed three shaped Mn–Zn ferrite (Mn0.63Zn0.37Fe2O4) MNPs used as cancer theranostic nanoagents and compared the effect of the three shaped MNPs on cancer theranostics. Compared to the monodisperse sphere MNPs (S-MNPs-PPR) and clustering MNPs (C-MNPs-PPR), worm-like Mn–Zn ferrite MNPs (W-MNPs-PPR) achieved better results in T2-weighted MRI and achieved more sustained drug release than S-MNPs-PPR and more complete drug release than C-MNPs-PPR in vitro. Additionally, polyethylene glycol (PEG) coating and RGD modification encouraged the three shaped MNPs to evade the recruitment of macrophages more easily and to target the integrin-enriched endothelial cells instead. Meanwhile, W-MNPs-PPR coupled with Paclitaxel (PTX) exhibited more delivery of PTX in the integrin-enriched cells than the other two shaped MNPs, and the content of PTX was far more than that of the wild-type Taxol control group. What is more, in vivo results demonstrated that PTX-coated W-MNPs-PPR not only gained good dual-mode imaging in the tumor (MRI and fluorescence images) but also achieved longer blood circulation time and more PTX-targeted delivery to the tumor, as well as more efficiency in tumor cell killing, which make the simultaneous diagnosis and treatment of tumors to be conducted. Therefore, our works further revealed the importance of the NP shape on its functionality and ultimately provided an alternative and efficient worm-like theranostic nanoagent for tumor theranostics.
研究领域:
纳米医学
·
生物医学工程
·
肿瘤学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2023
·Vol. 129
·期 4
·1-10
·
IF 2.7
Luo Junsong,Guo Yiming,Liu Lian,Yu Zhou,Zhao Yong,Huang Mei,Xu Min,Duan Xuru,Zhang Yong
Nb 3 (Al 1– x Zn x ) ( x = 0–0.05) wires were obtained after single rapid heating, quenching and low temperature transformation (single-RHQT) process. It is found that Zn element can make crystal plane diffraction peaks of Nb 3 Al phase shift to higher angle, and the interplanar crystal spacing decreases gradually, which indicates that Al atoms in Nb 3 Al lattice are replaced by Zn atoms with smaller diameters. And the addition of Zn can reduce Δ T c and make the superconducting phases purer, and magnetic performances such as critical temperature ( T c ), critical current density ( J c ), irreversible field ( B irr ) are better than that of the pure sample. Nb 3 (Al 0.99 Zn 0.01 ) wire shows the highest J c value of about 5.9 × 10 4 A/cm 2 at 4.2 K and 8 T, and the highest T c value of 16.8 K was found in Nb 3 (Al 0.98 Zn 0.02 ). The influence of multiple rapid heating, quenching and low temperature transformation (multi-RHQT) process on Nb 3 (Al 1– x Zn x ) wires was mainly explored, and 2 at% and 3 at% Zn samples were selected with relatively high Δ T c values for five times RHQT treatment. It is observed that the multi-RHQT process can further reduce Δ T c , and more homogeneous superconducting phases are discovered compared with that of single-RHQT process. The elements are also evenly distributed in the multi-RHQT-processed Nb 3 (Al 1– x Zn x ) wires, leading to the improvement of J c , B irr performances compared to single-RHQT samples. Multi-RHQT-processed Nb 3 (Al 0.98 Zn 0.02 ) and Nb 3 (Al 0.97 Zn 0.03 ) samples show the J c values of 1.7 × 10 5 A/cm 2 and 1.2 × 10 5 A/cm 2 (4.2 K, 8 T), which are nearly ten times as many as that of single-RHQT samples, and Nb 3 (Al 0.97 Zn 0.03 ) has the highest B irr values of 19.6 T (4.2 K) and 10.7 T (10 K). Flux pinning of the Nb 3 (Al 1– x Zn x ) ( x = 0.01–0.05) wires follows the surface pinning mechanism, where grain boundary and stacking faults are considered as pinning centers.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Xia Wei,Yuhan Zhou,Tianyao Wang,Hongbin Dai,Song Li
The hydrazine oxidation reaction (HzOR) is essential for direct hydrazine fuel cells and offers a promising alternative to the kinetically sluggish oxygen evolution reaction in water splitting. In this work, we present the design and synthesis of a novel Ni-Zn-Cu catalyst with a three-dimensional (3D) interconnected hollow network structure for HzOR. This unique 3D hollow architecture, comprising Ni-Zn-Cu nanosheets, significantly enhances HzOR catalytic performance by increasing the number of accessible active sites and improving both mass and charge transport. Additionally, the incorporation of multifold nanotwins within the catalyst induces lattice strain and reduces coordination numbers, optimizing the electronic structure and d -band center to strengthen hydrazine adsorption and catalyst reactivity. The Ni-Zn-Cu catalyst exhibits remarkable HzOR performance, achieving a current density of 200 mA·cm −2 , and a mass activity of 10,129 A·g −1 at −0.05 V vs. RHE, and a low onset potential of −0.15 V vs. RHE. Furthermore, it retains 96 % of its initial activity after 20 h of continuous electrolysis. This work marks a significant advancement in the development of highly efficient and durable HzOR catalyst.
研究领域:
材料科学
·
化学工程
·
能源技术
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Xiaomeng Dou,Xiao Jiang,Wenzhi Li,Chaofeng Zhu,Qingchuan Liu,Qiang Lu,Xusheng Zheng,Hou-min Chang,Hasan Jameel
Kraft lignin depolymerization to liquid fuels with high yields is crucial to the comprehensive achievement of sustainable and economic feasibility. Herein, we prepared a bimetallic Co-Zn/Off-Al H-beta catalyst through a two-step post synthesis method composed of dealumination and metal incorporation. The bifunctional Co-Zn/Off-Al H-beta catalyst efficiently converted Kraft lignin to liquid fuels, which was attributable to the synergistic effect of Co hydrogen binding sites and Zn Lewis acid sites on H-beta support. Catalytic hydrogenation with Co:Zn = 1:3/Off-Al H-beta catalyst at 320 °C for 24 h gave the highest yield of petroleum ether soluble product (81%, mainly monomers and dimers). Under these conditions, the liquefied lignin gave a higher heating value of 33.3 MJ/kg, which is a significant increase from 26.0 MJ/kg of Kraft lignin. The catalyst stability test showed excellent recyclability. This work provides a paradigm of improving lignin depolymerization efficiency via the combined use of Lewis acid and hydrogenation catalyst.
研究领域:
化学工程
·
可再生能源
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2020
·Vol. 44
·期 6
·2303-2311
·
IF 3.288
Ning Jiang,Hongchao Geng,Yan Qiao,Xingqi Zhu,Chenyi Li,Qingyun Cai
A visible-light-active CuInSe2:Zn/g-C3N4/TiO2 nanowire (NW) photoelectrode was prepared by in situ growth of g-C3N4 on the surface of TiO2 NWs, followed by drop deposition of Zn-doped CuInSe2 quantum dots (CuInSe2:Zn QDs). It has a 2.205 eV band gap and can absorb visible light. The as-prepared ternary hybrid nanocomposite CuInSe2:Zn/g-C3N4/TiO2 NWs shows high photon absorption and photocurrent generation efficiency, as well as a high bactericidal effect on Staphylococcus aureus.
研究领域:
材料科学
·
微生物学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Small
·
2021
·Vol. 18
·期 8
·2105775
·
IF 13.281
Xiaobo Feng,Jie Lei,Liang Ma,Qunle Ouyang,Yuxuan Zeng,Hang Liang,Chunchi Lei,Gaocai Li,Lei Tan,Xiangmei Liu,Cao Yang
Osteomyelitis is considered as the most serious bone infection, which can lead to the bone destruction or fatal sepsis. Clinical treatments through frequent antibiotics administration and surgical debridement bring inevitable side effects including drug-resistance and disfigurements. It is urgent to develop an antibiotics-free and rapid strategy to treat osteomyelitis. Herein, a bifunctional sonosensitizer that consists of porphyrin-like Zn single-atom catalysts (g-ZnN 4 ) and MoS 2 quantum dots is developed, which exhibits excellent sonodynamic antibacterial efficiency and osteogenic ability. It is found that the construction of heterogeneous interfaces of g-ZnN 4 -MoS 2 fully activates the adsorbed O 2 due to the increased interface charge transfer, enhanced spin−flip, and reduced activation energy of O 2 . The generated 1 O 2 can kill methicillin-resistant Staphylococcus aureus (MRSA) with an antibacterial efficiency of 99.58% under 20 min of ultrasound (US) irradiation. The Zn single atoms immobilized in g-ZnN 4 can be released steadily in the form of Zn 2+ for 28 days within safe concentration, realizing the great osteoinductive ability of such a sonosensitizer. For the treatment of MRSA-infected osteomyelitis, the inflammation and bone loss can be significantly suppressed through sonodynamic ion therapy. This work provides another strategy for developing high efficiency sonosensitizer through ultrasound interfacial engineering.
研究领域:
材料科学
·
生物医学工程
·
纳米技术
·
治疗学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）