WATER SCIENCE AND TECHNOLOGY
·
2017
·Vol. 77
·期 3
·628-637
·
IF 1.197
Guo Shuangzhen,Zhang Jian,Li Xianlong,Zhang Fan,Zhu Xixi
A novel core-shell bio-adsorbent was fabricated by using biological materials for removing methyl orange (MO) from aqueous solution. The structure characteristics results of scanning electron microscopy (SEM), Fourier transform infrared spectrometry (FT-IR), thermo-gravimetric analysis (TGA), vibrating sample magnetometer (VSM), and Brunauer–Emmett–Teller (BET) shows that Fe 3 O 4 -CS-L has been successfully prepared. The effects of contact time, pH, temperature and initial concentration were explored. The results suggested pH was a negligible factor in adsorption progress. Kinetic studies showed that the experiment data followed pseudo-second-order model. Boyd mode suggested that external mass transfer showed a rather weak rate control for MO adsorption onto Fe 3 O 4 -CS-L. Equilibrium studies showed that isotherm data were the best described by Langmuir model. The maximum adsorption capacity of MO estimated to be 338.98 mg/g at 298 K. Moreover, the adsorption capacity of Fe 3 O 4 -CS-L can keep about 74% in the fifth adsorption–regeneration cycle. Thus, the Fe 3 O 4 -CS-L could be a kind of promising material for removing MO from wastewater.
研究领域:
环境科学
·
纳米材料
·
水处理
·
吸附技术
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2026
·
IF 9.2
Miaosen Zhang,Jintian Li,Weiwei Mao,Wenjun Zhang,Liang Chu
Metallic lead (Pb0) defects in halide perovskites act as deep-level traps, serve as charge-recombination centers, and accelerate crystal structure degradation. Here, blade coating under ambient air conditions is employed to scalably fabricate FA–Cs perovskite films for inverted photovoltaic modules. During this process, (CH3)3SI is incorporated to interact with the surplus PbI2, resulting in the formation of a one-dimensional (1D) (CH3)3SPbI3 phase and suppressing harmful Pb0 defects. The 1D phase can optimize energy-level alignment, reduce defect states, inhibit carrier recombination, and enhance carrier transport. By optimizing the (CH3)3SI concentration, the power conversion efficiency of perovskite modules on a 10 × 10 cm2 substrate is enhanced from 18.25% to 19.98%, accompanied by improved open-circuit voltage and fill factor. Besides, the hysteresis index is reduced from 0.09 to 0.02. Additionally, the unencapsulated modules retain approximately 90% of their initial efficiency after 1000 hours, whereas the control devices maintain only 84% after 740 hours.
✓ 已验证
产品关联
DOI
高影响因子
Membranes
·
2026
·Vol. 16
·期 7
·224
·
IF 4.2
Tengfei Liao,Zengpeng Zhang,Qingxia Zhang,Hao Yang
Multifunctional membranes capable of simultaneously separating oil–water emulsions and removing organic dyes from complex aqueous systems have garnered considerable attention in recent years. However, the facile fabrication of high-performance membranes that integrate both separation and adsorption functions remains a significant challenge. Herein, we report the fabrication of a polyacrylonitrile/polyvinyl alcohol–chitosan (PAN/PVA-CS) bilayer membrane with asymmetric wettability via electrospinning. The micro/nanostructures and surface wettability of the as-prepared membranes were precisely tailored by modulating the chitosan (CS) concentration. The resultant PAN/PVA-CS membrane exhibited an overall separation efficiency exceeding 97.5% for mechanically emulsified samples. Notably, the PVA-CS layer demonstrated superhydrophilicity and excellent underwater oleophobicity, enabling the gravity-driven simultaneous separation of oil-in-water emulsions and adsorption of water-soluble Congo red dye without requiring external pressure. The maximum adsorption capacity for Congo red reached 61.3 mg g−1, surpassing that of numerous reported membrane-based and adsorbent materials. Concurrently, the hydrophobic PAN layer in the bilayer structure enabled the separation of water-in-oil emulsions. Overall, this work provides a promising strategy for the rational design of asymmetrically wettable multifunctional membranes with great potential for practical application in the purification of complex industrial wastewater containing both emulsified oils and soluble organic dyes.
✓ 已验证
DOI
高影响因子
LANGMUIR
·
2026
·
IF 4.4
Guojing Yu,Qixia Zhang,Kaiyi Pan,Yueqiang Zhao,Yuanhang Zhou,Tianjiu Jiang,Ye Xiong
Due to their poor resistance to swelling, developing biomass-based radionuclide-capturing aerogel adsorbents with high adsorption capacity and excellent mechanical stability remains a significant challenge. This paper describes a dual-network aerogel constructed using a multiscale interface-control strategy, leveraging Zn2+-induced chitosan precross-linking and entanglement of oxidized carboxymethyl cellulose (ox-CMC). Within this stable framework, ZIF-8 nanoparticles were synthesized in situ. This design, through physical entanglement and chemical cross-linking, suppressed the swelling of the dual-network framework. After 30 days of soaking, its tensile strength remained approximately 0.48 MPa, and it also exhibited good compressive resilience. Simultaneously, the nitrogen-rich channels of ZIF-8 synergize with the negatively charged surface of the dual network (zeta potential: −40.5 mV), resulting in an Sr2+ adsorption capacity of 226.8 mg/g, which is significantly higher than that of many clay- or polymer-based adsorbents. After 10 adsorption–desorption cycles, the aerogel retained 85.8% of its initial properties. This multiscale interface design provides a robust strategy for preparing swelling-resistant, high-performance biomass aerogels for advanced radioactive wastewater treatment.
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Xiaomin Jian,Kaicheng Zhou,Zhongli Wu,Xingjun Li,Xinchi Duan,Daohai Zhang
As a green technology with great development potential, solar-driven interfacial evaporation is considered to be an effective way to alleviate the freshwater crisis and achieve efficient water treatment. However, there are still great challenges in preparing evaporators with efficient evaporation, continuous water supply, and structural stability. In this paper, a low-cost CS/PVA@CNTs composite aerogel solar evaporator was prepared by freeze-drying method. CS and PVA form a stable three-dimensional hydrophilic porous backbone through hydrogen bond interactions, ensuring continuous and efficient water transport. At the same time, the introduction of photothermal CNTs realizes the excellent light absorption capacity and efficient photothermal conversion efficiency of the evaporator. Under the condition of 1 kW·m −2 light condition, the evaporation rate of CPAC-5 samples reached 1.73 kg·m −2 ·h −1 , and the evaporation efficiency was as high as 99.73%. Moreover, beyond its efficient evaporation performance, the CPAC-5 evaporator also exhibits excellent purification capabilities for various industrial pollutants. The experimental results show that the evaporator can effectively purify heavy metal ions (Cu 2+ , Zn 2+ and Co 2+ ), organic dyes (MO, MB) and strong acid and alkaline industrial sewage. It is worth noting that the purified condensate can be used for the germination and growth of soybean and mung bean seeds, which verifies its practical feasibility in agricultural irrigation. This research provides new technical ideas for sustainable water treatment and agricultural irrigation driven by solar energy.
✓ 已验证
DOI
高影响因子
Journal of Macromolecular Science Part B-Physics
·
2025
·
IF 1.4
Jianxun Yao,Jifan Zhan,Hanwu Liu,Tingting Yan
Auricular reconstruction remains a significant challenge in tissue engineering due to the auricle’s complex anatomy and functional requirements. To address the limitations of autologous cartilage grafts, we developed a composite scaffold consisting of porous ultra-high molecular weight polyethylene (UHMWPE) integrated with a polyvinyl alcohol/chitosan (PVA/CS) double-network hydrogel reinforced with 2 wt% nano-hydroxyapatite (HA). The scaffold was fabricated via powder sintering and physical crosslinking and exhibited high porosity (>41%), a tensile strength of 2.80 MPa, and enhanced water retention. The addition of HA improved both the mechanical strength and antibacterial properties of the composite. The hydrogel component demonstrated stable swelling behavior, hemolysis rates below 5%, and good cytocompatibility. These findings demonstrate that the UHMWPE/PVA-CS/HA composite scaffold, combining the rigidity of a sintered porous framework with the flexibility and bioactivity of a reinforced hydrogel, offers a novel and promising platform for patient-specific auricular reconstruction with balanced mechanical, biological, and antibacterial properties.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2025
·
IF 3.5
Hai Li,Jiahao Huang,Xin Tan,Xiaofang Lai,Jun Deng,Duan Zhao,Shaoming Zeng,Jikang Jian
Three layered quaternary sulfides, A CuZnS 2 ( A = K, Rb, Cs) have been synthesized by a facile solvothermal method using ethylenediamine as solvent and characterized by a combination of structural, magnetic, and optical measurements . They adopt the ThCr 2 Si 2 -type structure (space group I 4/ mmm ) and are composed of alternating two-dimensional [CuZnS 2 ] −1 layers and alkali metal layers. Based on magnetization and optical measurements, these three compounds are found to be paramagnetic semiconductors. The optical band gap is around 2.75 eV and for the first time two photoluminescence bands are observed for each compound. The green luminescence can be ascribed to a localized Cu + emitting level and the red one to an excitonic state.
研究领域:
材料科学
·
无机化学
·
固态化学
·
光电材料
·
光物理
✓ 已验证
产品关联
DOI
高影响因子
RADIOCHIMICA ACTA
·
2022
·Vol. 111
·期 1
·63-71
·
IF 2.083
Peng Liu,Zhuang Shen,Jiaxian Cheng,Zhen Han,Wenda Xu,Mingbo Ji,Fuqiu Ma
Due to the relative abundance, long half-life and high mobility of radioactive cesium (Cs), new adsorbents are urgently needed to treat Cs to ensure public health. In this study, a graphene oxide (GO) based adsorbent for Cs(I) adsorption was prepared by 1-aza-18-crown-6 ether modification. XRD, FT-IR, XPS and SEM results showed that the properties of 1-aza-18-crown 6 ether modified GO (18C6-GO) changed dramatically compared with that of raw graphite. The adsorption properties of 18C6-GO for Cs(I) were studied by batch static adsorption experiments. The results showed that the adsorption equilibrium time of 18C6-GO was 20 h. Kinetic study revealed that the adsorption rate of Cs(I) conformed to pseudo-second-order kinetic model. Langmuir adsorption isotherm simulation indicated that the adsorption arises at homogeneous adsorption sites on 18C6-GO. Therefore, crown ether modified GO may have implications for the treatment of wastewater.
研究领域:
环境科学
·
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2023
·
IF 8.6
Mengran Sun,Wenhao Xing,Shyong K. Chen,Chunxiao Li,Wenhao Liu,Ming-Hsien Lee,Jiyong Yao
Chalcogenides are promising candidates for exploring mid- and far-infrared nonlinear optical (NLO) materials. Nevertheless, although tellurides possess greater advantages in the above-mentioned spectral regions, the reports on telluride NLO materials are far fewer than those on sulfides and selenides. In this work, a new quaternary NLO-active telluride, KCd4Ga5Te12, was discovered, and its Rb and Cs analogues were successfully synthesized. They are crystallized in the trigonal R3 space group and the structure features a 3D diamond-like framework constructed by vertex-sharing asymmetric MTe4 tetrahedra (centered by disordered Cd and Ga) that are stacked along the c-axis. Moreover, a comprehensive study of their IR NLO properties, photoluminescence properties, and structural features was performed. These compounds exhibited large powder second-harmonic generation (SHG) intensities, about 2.1 (2.7, 4.4) times that of AgGaSe2 in the particle size range of 20–50 (125–150) μm and a wide transmission range (∼25 μm). The SHG-density analysis revealed that the largest component χ333(2) of KCd4Ga5Te12 originates from three types of Te in the crystal structure. More importantly, it is rare in literature to demonstrate the consistency of linear and NLO properties calculated using both ultrasoft pseudopotentials and norm-conservation pseudopotentials. Besides, the title compounds also exhibit strong luminescence emissions around 420 and 470 nm at 298 K. This work implies that title compounds are promising candidates in the IR NLO applications.
✓ 已验证
产品关联
DOI
高影响因子
Biosensors-Basel
·
2023
·Vol. 13
·期 8
·808
·
IF 5.4
Jin Zhu,Yi He,Lijun Luo,Libo Li,Tianyan You
Diuron (DU) abuse in weed removal and shipping pollution prevention always leads to pesticide residues and poses a risk to human health. In the current research, an innovative electrochemical sensor for DU detection was created using a glassy carbon electrode (GCE) that had been modified with chitosan-encapsulated multi-walled carbon nanotubes (MWCNTs-CS) combined with nitrogen-doped graphene quantum dots (NGQDs). The NGQDs were prepared by high-temperature pyrolysis, and the MWCNTs-CS@NGQDs composite was further prepared by ultrasonic assembly. TEM, UV-Vis, and zeta potential tests were performed to investigate the morphology and properties of MWCNTs-CS@NGQDs. CV and EIS measurements revealed that the assembly of MWCNTs and CS improved the electron transfer ability and effective active area of MWCNTs. Moreover, the introduction of NGQDs further enhanced the detection sensitivity of the designed sensor. The MWCNTs-CS@NGQDs/GCE electrochemical sensor exhibited a wide linear range (0.08~12 μg mL−1), a low limit of detection (0.04 μg mL−1), and high sensitivity (31.62 μA (μg mL−1)−1cm−2) for DU detection. Furthermore, the sensor demonstrated good anti-interference performance, reproducibility, and stability. This approach has been effectively employed to determine DU in actual samples, with recovery ranges of 99.4~104% in river water and 90.0~94.6% in soil. The developed electrochemical sensor is a useful tool to detect DU, which is expected to provide a convenient and easy analytical technique for the determination of various bioactive species.Keywords:diuron;electrochemical sensor;multi-walled carbon nanotubes;nitrogen-doped graphene quantum dot
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Yongchuan Wu,Jitao Chen,Zhongmin Liu,Ping Na,Zhibin Zhang
Removing trace radioactive 137 Cs from aquatic system is still a challenge. Herein, Zirconium Titanium Phosphate (ZTP) was prepared and utilized for Cs removal from seawater. The structure and morphology of ZTP were systematically characterized. ZTP exhibited typical feature of tetravalent metal acid, and the surface was pocked with abundant hydroxyl groups which can reacted with H 2 O to form exchangeable protons. Bench-scale to pilot-scale adsorption was carried out to assess Cs removal capacity and rate. ZTP showed a good adsorption performance for Cs + especially at trace concentration (500 ppb) and the removal rate in deionized water and seawater were 98.8 % and 83.9 %, respectively. Radioactive experiments were conducted to test the selective removal of 137 Cs + and the removal rates reached 98.3 %. Slurry-bed adsorption device was designed and used as the pilot-scale equipment. The removal rate was as high as 92.7 % after 12 cycles, indicated that ZTP is one of the promising adsorbents in industrial application. Pyridine adsorption IR spectra indicated that surface of ZTP was riddled with Brønsted and Lewis acid sites, and the protons at the Brønsted acid site exchanged with Cs + . This work will provide reference for the treatment of large-scale Cs-contaminated wastewater.
✓ 已验证
产品关联
DOI
高影响因子
ChemElectroChem
·
2022
·Vol. 9
·期 10
·e202200237
·
IF 4.782
Xiaoxiao Chen,Pu Li,Chen Luo,Chaobiao Huang
Graphical Detection mechanism of PEC sensor for detecting xanthine based on photocurrent signal changes caused by hydrogen peroxide reduction catalyzed by copper nanoclusters A photoelectrochemical (PEC) sensor combining chitosan-coated and glutathione-protected copper nanocluster (CS−GSH−CuNCs) with peroxidase-like activity and xanthine oxidase (XAO) was developed for rapid detection of xanthine. Firstly, CS−GSH−CuNCs was prepared by glutathione (GSH) reduction using chitosan (CS) as protective agent, and then was modified on titanium dioxide nanoparticles (TiO 2 NPs)/ITO electrode which was prepared by sintering titanium dioxide (TiO 2 ) on the ITO electrode surface by high temperature calcination. After excited by light at 350 nm, the photoinduced electrons from the lowest unoccupied molecular orbital (LUMO) of CS−GSH−CuNCs were transferred to the conduction band of TiO 2 , which resulted in spatial separation of electron-hole and enhancement of photocurrent signal. XAO oxidizes xanthine to produce hydrogen peroxide (H 2 O 2 ). Part of the photoinduced electrons from CS−GSH−CuNCs transferred and catalyzed the reduction of H 2 O 2 , resulting in the reduction of the photocurrent. Under optimal conditions, the PEC sensor exhibits good sensitivity and reproducibility with the limit of detection (LOD) of 6.6 nmol ⋅ L −1 and a relative standard deviation of 3.5 % for 10 replicate detections of 1.00 μmol ⋅ L −1 xanthine and the linear range of 0.04–90.0 μmol ⋅ L −1 for xanthine. Furthermore, the PEC sensor presents nice selectivity owing to its enzyme-like activity and was successfully applied to human urine, indicating its great potential for real sample analysis.
✓ 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）