Environmental Progress & Sustainable Energy
·
2025
·
IF 2.3
Qianying Zhou,Xi Wang,Yongkuan Li,Mingyu Ma,Juan Wu,Dengxin Li,Shihong Xu,Wenjing Sang
Heavy metal contaminated soil remediation methods are mostly chemical washing, fixed stabilization, and bioremediation techniques. However, chemical drenching can cause secondary pollution; fixation stabilization remediation is incomplete and may fail; and bioremediation has a long time period. Therefore, in this study, we synthesized a stable millimeter-scale gel spherical adsorbent, UIO-66-NH 2 @SA, to remove the pollutants from the soil contaminated with high concentrations of heavy metals by a combination of aqueous leaching and adsorption without the addition of additional chemical leaching agents. The UIO-66-NH 2 @SA can be recovered by sieving, and it still has the capacity of removing the heavy metals after four adsorption–desorption cycles. The analysis of soil properties before and after adsorption proved that the remediation process would not affect the physicochemical properties and fertility of the soil, and the characterization of x-ray diffraction, Fourier transform infrared, and XPS proved that the adsorption mechanism was mainly ion exchange and functional group complexation.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
HYDROMETALLURGY
·
2022
·
IF 4.217
Yong Xiang,Yun Liu,Mingjie Li,Wencai Bai,Guoji Liu,Li Xu
The significance of recycling gold is self-evident. However, existing technologies for recovery of gold show several disadvantages, including their high costs, difficulty to recover adsorbent, as well as low adsorption capacity. Thus, an ecofriendly gold recovery system with low cost and high efficiency should be developed. In this study, a novel RFT-SA adsorbent (RFT:SA = 1:1) was developed, which was achieved by wrapping the self-assembled resorcinol-formaldehyde-thiourea (RFT) in sodium alginate (SA) hydrogels. This study suggests that it can make up for the shortcomings of powder adsorbent RFT that is difficult to collect, and it can fully use the high adsorption capacity and high selectivity of RFT. The RFT-SA adsorbent exhibited high adsorption capacity as Au(III) reached 603.4 ± 24.6 mg g −1 of M Au / M dry-gel . It is noteworthy that RFT-SA exhibited excellent selectivity to Au(III) in simulated electronic waste leachate containing Au(III) and other competing ions, thus suggesting that RFT-SA can recover gold efficiently under complex conditions. This study can provide a new idea for designing a novel type of adsorbents for precious metal ions with high adsorption capacity, high selectivity and being easy to collect for the efficient recovery of precious metals from electronic waste leachate.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 43
·e202403318
·
IF 1.9
Xinyue Zhang,Qiurong Chen,Yan Luo
Graphical In order to improve the stability and controlled release properties, NaClO 2 is microencapsulated based on emulsion crosslinking method adopting high biocompatibility sodium alginate (SA) and sodium carboxymethyl cellulose (CMC-Na) as shell material. The resulted sample is featured with selectivity and no secondary pollution, and brings about continuous degrading both liquid and gaseous formaldehyde. Sodium chlorite (NaClO 2 ) is a new type of air disinfectant, which can oxidize formaldehyde into carbon dioxide (CO 2 ) on account of releasing chlorine dioxide (ClO 2 ) gas under acidic condition. Unfortunately, NaClO 2 is prone to moisture absorption and decomposition when exposed to air. In this paper, NaClO 2 was microencapsulated based on emulsion crosslinking method for improving its stability and controlled release properties. Due to their high biocompatibility, sodium alginate (SA) and sodium carboxymethyl cellulose (CMC-Na) were selected as the wall material to prepare NaClO 2 -SA/CMC-Na composite microcapsules. The results showed that mean particle size of NaClO 2 -SA/CMC-Na composite microcapsules was about 225 nm, and their encapsulation ratio was up to 73.18%. In addition, the thermal stability and environmental tolerance of NaClO 2 are improved greatly through microencapsulating. It was proved by formaldehyde degradation testing that the efficiency of formaldehyde degradation using resulted samples can continue to increase after seven days in pH 6.5 environment, indicating their good controlled-release performance. Moreover, degradation efficiency on 30 µg/mL formaldehyde solution using the resulted microcapsules is up to 97.08%. Meanwhile, after 20 repetition degradation, NaClO 2 -SA/CMC-Na composite microcapsules can still continuously degrade formaldehyde gas. Therefore, NaClO 2 -SA/CMC-Na composite microcapsules reveal good stability and prolonged action on formaldehyde degradation.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2025
·
IF 6.6
Qian Liang,Yufei Tang,Yuting Song,Bo Zhang,Yani Sun,Kang Zhao,Zixiang Wu
The fabrication of composites with nacre-like structures through the ordered integration of ceramics and organic components represents an effective approach to developing high strength and toughness bone implant materials. Traditional preparation methods typically involve high-temperature sintering followed by the infiltration of organic substances. While these methods can achieve high strength, the uniformity and depth of organic substance penetration into the ceramic matrix were constrained by pore size, leading to an uneven distribution. Additionally, the interface bonding between the organic and ceramics was limited to physical bonding, which restricts the enhancement of fracture toughness. In this study, nacre-mimetic hydroxyapatite (HA)-Calcium carbonate (CaCO 3 )/sodium alginate (SA) layered composites were fabricated utilizing a combination of roll rolling and the sinterless characteristics of calcium phosphate bone cement (CPC). The SA contains oxygen groups that form bonds with Ca 2+ in the HA layer. The bending strength of nacre-mimetic HA-CaCO 3 /SA layered composites can achieve 9.04 MPa, which was comparable to that of human trabecular bone. Repeated roll rolling lead to a lamellar dispersion of SA in the composite, with an average thickness of 0.19 μm. The fracture toughness of the layered composite was 13.89 MPa m 1/2 , which was higher than that of cortical bone due to deflection extension path of the crack under bending stress, crack passivation, crack bifurcation and crack bridging. The layered composites exhibit excellent biocompatibility, promoting the proliferation and adhesion of osteoblasts. This characteristic was crucial for developing bone implant materials that match both the mechanical and biological properties of human bones.
研究领域:
生物材料学
·
骨科医学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2026
·
IF 1.6
Li Tingting,Xia Liangshu,Wang Fang
The efficient recovery of uranium from acidic wastewater is a critical challenge in nuclear environmental management. Herein, We developed a novel potassium manganese ferricyanide/sodium alginate (KMnFC/SA) membrane for uranium recovery from acidic effluents. Fabricated via a simple, low-cost method, the membrane exhibits high performance with a maximum static capacity of 377.7 mg g −1 and excellent reusability over eight cycles, demonstrating its reliability. This work presents the KMnFC/SA membrane as a robust, efficient, and reusable adsorbent with significant potential for practical uranium remediation from acidic effluents.
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 7
·3630-3639
·
IF 3.591
Kaijia Li,Hongxiang Ou,Dongsheng Zhou,Chenxia Gong,Honglai Xue,Yuyan Li
Graphene oxide (GO) has the advantages of a high specific surface area and great mechanical properties, which make it useful in the field of adsorption; however, it is difficult to obtain and utilize nano-size GO for adsorption and separation. In this study, zinc ion crosslinked GO and sodium alginate aerogel microspheres (Zn–GO@SA) were prepared using the ion–gel method and used for ciprofloxacin (CIP) adsorption, and this was easy to separate and collect from solutions. Methods such as SEM, EDX, FT-IR, and TGA were used for physical and chemical characterization. The adsorption properties and mechanisms were examined via static and dynamic adsorption experiments. The results indicated that the Zn–GO@SA aerogel microspheres had abundant and ordered cavities. The adsorption isotherm and kinetic data fitting results showed that the adsorption process was consistent with the Freundlich model and a quasi-second-order kinetics model. The adsorption of CIP was a multi-layer adsorption process dominated by chemical adsorption. At 308 K, the maximum adsorption capacity was 134.85 mg g−1, while increasing the adsorption temperature had an adverse effect on CIP adsorption. The results of regeneration and dynamic adsorption experiments showed that Zn–GO@SA aerogel microspheres maintained good adsorption performance after repeated use, which means they have potential for practical applications.
研究领域:
环境科学
·
材料科学
·
药物化学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2023
·
IF 4.6
Xin Zhang,Zhicheng Mao,Jijun Ding,Haixia Chen
The iron tetroxide/reduced graphene oxide/stearic acid (Fe 3 O 4 /RGO/SA) composite membrane with a micro-nano-graded rough structure is fabricated on cotton cloth. Surface morphology , crystal structure, infrared spectra , and contact angle are tested to analyze the microstructure and wettability properties of the composite membrane. Compared with the original cotton, the composite membrane is changed from superhydrophilic to superhydrophobic , the water contact angle reached 156.1°, and it has stable superhydrophobicity at different pH values (pH = 5, 6, 7, 8, 9). A series of oil-water separation experiments show that the separation efficiency of composite membrane for four oil-water mixtures is higher than 98.4%, the results of the cycle separation test show that the separation efficiency and flux test for 10 cycles did not appear measurably fluctuations, the separation efficiency has always been maintained above 98%. In addition, the membrane can absorb oil slick on the water surface by magnetic drive, which provides a new idea for contactless manipulation of oil removal.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
·
2024
·
IF 4
Shaopeng Zhang,Jie Ding,Dayong Tian,Jing Wang,Jiale Zhang,Minghua Lu
China faces severe antimony pollution due to long-term, high-intensity mining and smelting operations. Long-term exposure to Sb(III) can lead to chronic respiratory problems. Adsorption method is used to remove Sb(III) because of its simplicity, economy and high efficiency. Therefore, a novel MIL-101(Fe)-Cl/SA hydrogel with oxidation-sorption bifunctionality was developed. 1602 cm −1 and 1025 cm −1 correspond to N H and S = O indicate N-chlorosulfonamide is bonded to MIL-101(Fe)-Cl/SA. MIL-101(Fe)-Cl/SA exhibited rough and wrinkled surfaces with numerous irregular particles by SEM. The presence of O (22 %) and Cl (2 %) confirmed the incorporation of N-chlorosulfonamide and SA into MIL-101(Fe)-Cl/SA by EDS and mappings. The adsorption capacities of MIL-101(Fe)-Cl/SA were 86 mg/g at 298 K and 123.21 mg/g at 328 K by Langmuir model. Kinetic and equilibrium correspond to pseudo-second-order and Langmuir model, respectively. Adsorption was spontaneous and endothermic by thermodynamic analysis. MIL-101(Fe)-Cl/SA exhibited enhanced selectivity in solution containing various ions. Moreover, MIL-101(Fe)-Cl/SA demonstrated potential for regeneration and reuse. The removal process primarily involved oxidation, electrostatic interaction, and complexation. In summary, the capability of MIL-101(Fe)-Cl/SA to adsorb and oxidize Sb(III) underscores its promising potential in mitigating the hazards associated with Sb(III).
研究领域:
环境科学
·
材料科学
·
废水处理
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Yue Cheng,Bing Li,Jianping Wang,Yubin Wang,Linshan Wang,Muling Wei,Yuying Wang,Zhongrong Chen,Gang Zhao
Hydrogel microspheres are considered ideal carriers with broad applications in 3D cell culture, drug delivery, and microtissue construction. Although multiple methods have been developed for generating hydrogel microspheres, there is still a lack of a universal approach that combines operability, stability, cost-effectiveness, and biocompatibility. In this work, a novel rotating microfluidic system (RMS) is proposed, which can rapidly fabricate diverse poly(ethylene glycol) diacrylate/sodium alginate (PEGDA/SA) hydrogel microspheres by motor-driven rotation of the oil phase to form a special T-shaped structure with the needle. The main part of the system consists of commercially available motors, a beaker, and needles that do not require precision machining and are user-friendly with low cost. Moreover, by adjusting system parameters such as the needle structure, flow rate, and rotational speed, the platform enables rapid fabrication of hydrogel microspheres with different sizes and diverse cores, including crescent, thick wavy, oval, and spherical. Furthermore, tumor cell-laden hyaluronic acid methacrylate/sodium alginate (HAMA/SA) hydrogel microspheres were fabricated by using this system, which demonstrated good cell viability and proliferation in the subsequent 3D culture. In vitro drug evaluation of tumor models using cisplatin revealed the potential of this system for drug evaluation. These results indicated that RMS has good potential in other 3D cell culture-based biomedical applications.
研究领域:
生物医学工程
·
组织工程
·
药物开发
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOMATERIALS
·
2025
·
IF 12.9
Liqiang Gu,Xintao Sun,Jian Pan,Dongming Liu,Lilan Huang,Yaru Yu,Bing Yu,Hailin Cong
The antibacterial hydrogels have attracted a significant amount of interest for preventing bacterial infection in wound healing. However, irreversible antibiotic resistance and lagging detection of wound infection are still current research pain points for hydrogel wound dressings. This study successfully prepared and characterized a novel aggregation-induced PVA/SA/BBR hydrogel. BBR confers significant antibacterial potential to PVA/SA/BBR hydrogels avoiding the use of antibiotics. The results indicate that PVA/SA/BBR hydrogels displayed antibacterial activity against S. aureus , enhanced wound healing process, negligible cytotoxicity, and low hemolytic activity (< 5%). Molecular docking analysis indicate that BBR could inhibit the activity of FabH of E. coli and S. aureus , with a respective binding energy of -9.0185 and -8.4037 kcal/mol. Moreover, the real-time in situ monitoring and quantifying of wound pH levels could be realized by RGB signals collected and transformed from the visible-fluorescent images. PVA/SA/BBR hydrogels also provided significant fluorescent signals visible to the naked eye due to the AIE effect of BBR when the hydrogel severely loses water. All of these signals suggested anti-infective therapy and hydrogel replacement. Therefore, PVA/SA/BBR hydrogels as efficient non-antibiotic-dependent wound dressings with significant therapeutic effect on skin wounds provide potential applications in wound healing, flexible wearable sensing and drug delivery.
研究领域:
生物医学工程
·
材料科学
·
感染与免疫
✓ 已验证
产品关联
DOI
PubMed
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2024
·
IF 10.7
Yi Chen,Hengyi Chen,Xiaohui Chen,Yufang Zhang,Wei Tu,Jiaxi Mo,Shanshan Tian,Chenyu Sun,Xiaoqin Meng,Zhizeng Wang,Jichun Yang,Yang Luo
Accurate intracellular visualization of human telomerase RNA (hTR) is imperative for early diagnosis and treatment monitoring of hepatocellular carcinoma (HCC). While isothermal amplification-based DNA cascade strategies are promising, challenges persist in achieving great intake efficiency of detection probes within tumor cells and enhancing intracellular reaction efficiency. This study introduces a SA@Comb-HCR nanosystem , a highly effective approach for in situ hTR detection in HCC cells. Sodium alginate-coated liposomes ensures efficient nanoprobe delivery, which are then combined with proximity effect-inspired signal amplification . The coating of sodium alginate facilitates receptor-mediated endocytosis , prevents serum protein adhesion, and mitigates cationic liposome cytotoxicity. The designed Comb-like consolidated hairpin probe enhances the concentration of the local reactant, resulting in cascade amplification upon hTR activation. This technique achieves precision detection of intracellularly overexpressed hTR in HCC cells with a remarkable detection limit of 0.7 pM. This approach holds great promise for advancing targeted and sensitive early clinical diagnosis of HCC.
研究领域:
分子生物学
·
肿瘤学
·
生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2026
·
IF 9.9
Hui Wang,Heyao Lu,Kaiqi Chen,Guanbing Zhou,Yihui Yuan,Ning Wang
Efficient adsorption and recoverable removal of uranium from aqueous media are crucial for resource utilization and environmental risk mitigation. However, conventional adsorbents often suffer from poor structural stability, limited reusability, and difficulties in deployment and recovery, which hinder practical applications. Herein, a robust macroporous ternary composite gel bead (PEI/SA-XLS) was fabricated from sodium alginate (SA), polyethyleneimine (PEI), and synthetic hectorite-type clay (laponite XLS) via synergistic polyelectrolyte complexation, supramolecular crosslinking, and freeze-drying. SA and PEI formed a 3D network through electrostatic interactions, while XLS nanosheets reinforced the framework through hydrogen bonding between surface silanol groups and amino/hydroxyl groups. Freeze-drying generated macropores (~100 μm), thereby significantly enhancing mass transfer and facilitating uranyl diffusion into the bead interior. Mechanistically, negatively charged XLS surfaces promoted electrostatic enrichment of UO 2 2+ , while silanol, amino, and carboxyl groups provided cooperative binding sites for efficient uranyl capture. The maximum adsorption capacity ( q m ) was ~2707 mg·g −1 (Langmuir). A removal efficiency of ~98% was achieved at 15.1 mg·L −1 ( V = 100 mL), and ~ 93% efficiency was maintained after ten adsorption-desorption cycles. These results highlight that macroporous transport channels and mechanically robust pore walls play a dominant role in adsorption efficiency and cycling stability for macroscopic adsorbents.
✓ 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）