CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2025
·
IF 3.9
Tallat Munir,Ming Liu,Shiyang Bai,Jihong Sun
The effective removal of multiple metal ions from aqueous solutions in a single-treatment process was explored using modified natural clinoptilolite (NCP). Batch adsorption experiments were conducted to evaluate the impact of critical factors, such as adsorbent dosage, contact time, adsorbate concentration, pH, and temperature, on the removal efficiency. The modified NCP achieved maximum adsorption capacities of 81.4, 78.4, 75.2, 72.2, and 68.8 mg·g −1 for Cd 2+ , Fe 3+ , Ni 2+ , Mn 2+ , and Sr 2+ , with removal efficiencies of 95.0 %, 90.1 %, 90.0 %, 86.5 %, and 82.5 %, respectively, at pH 3.0 and 25 °C for Fe 3+ , and pH 7.5 and 85 °C for the others. Adsorption kinetics followed the pseudo-second-order model while intra-particle diffusion, analyzed via the Weber-Morris model indicated that pore diffusion was a dominant mechanism, particularly for Fe³⁺. The Langmuir isotherm provided the best fit to the equilibrium data. Thermodynamic analysis confirmed the viability of the adsorption process, with Fe 3+ exhibiting exothermic adsorption, while the uptake of Mn 2+ , Ni 2+ , Cd 2+ , and Sr 2+ was endothermic. Negative entropy changes indicated enhanced ordering of adsorbed metal ions via strong electrostatic interactions. The modified NCPs demonstrated excellent regeneration capability and stability under acidic, basic, and thermal conditions. These findings provide valuable insights for designing effective multi-ion adsorption systems with enhanced performance and reliability.
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DOI
高影响因子
MATERIALS & DESIGN
·
2020
·
IF 6.289
Changjiang Pan,Tingting Liu,Ya Yang,Tao Liu,Zhihao Gong,Yanchun Wei,Li Quan,Zhongmei Yang,Sen Liu
Osteogenic and antibacterial activities are two basic requirements for orthopedic implants. The present study mainly focused on the investigation of the osteoblast behaviors and antibacterial activities of Sr/Ag-incorporated titanium dioxide (TiO 2 ) nanotube array (TNT) on the titanium surface. To this end, the Sr-incorporated TNT was firstly fabricated on the titanium surface by electrochemical anodization and hydrothermal treatment, and then Ag nanoparticles (AgNPs) were incorporated onto the nanotubes by reduction of the adsorbed Ag + through ultraviolet (UV) irradiation. The TiO 2 nanotubes had excellent hydrophilicity and Sr incorporation can further enhance the hydrophilicity; however, the AgNPs loading could slightly increase water contact angle. The release of Sr 2+ can not only promote osteoblast adhesion, proliferation and mineralization, but also up-regulate the alkaline phosphatase (ALP) and osteocalcin (OCN) expression. The introduction of AgNPs on Sr-incorporated nanotubes did not significantly influence the osteoblast cell behaviors; however, it can effectively inhibit the adhesion and growth of Escherichia coli . Therefore, the method of the present study is expected to be suitable for surface modification of titanium surface to simultaneously enhance the osteo-bonding ability and antibacterial activities for bone repair.
研究领域:
生物材料学
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医学工程
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组织工程
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2021
·
IF 10.588
Tao Huang,Dongping Song,Lulu Zhou,Hui Tao,Aiyin Li,Shu-wen Zhang,Long-fei Liu
The natural ecosystem will continually deteriorate for decades by the leakage of Cs and Sr isotopes. The exploration of the new materials or techniques for the efficient treatment of radioactive wastewater is critically important. In this study, a dielectric barrier discharge (DBD) configuration was constructed to operate the non-thermal plasma (NTP). The NTP was incorporated into the synthesis of polyaluminum chloride (PAC) in two different procedures to intensify the synthesis of PAC (NTP-PAC) and enhance the further removal of Cs and Sr from wastewater. The employment of NTP in two procedures both had significantly changed the physicochemical characteristics of PAC materials, which facilitated the further adsorption application of NTP-PAC on the treatment of Cs + and Sr 2+ . Different molecular, morphological, and adsorption characteristics were confirmed to the NTP-PAC materials. The heterogeneous adsorption of the NTP-PAC can be appropriately fitted by both the pseudo-first-order kinetic model and the Elovich model. Both physisorption and chemisorption reaction mechanisms were ensured for the heterogeneous adsorption of the NTP-PAC material towards Cs + and Sr 2+ , which guaranteed the excellent adsorption performance of NTP-PAC materials compared to PAC. The electron collisions caused by NTP with alum pulp created highly reactive growth precursors and intensified the nucleation and hydrolysis polymerization of PAC. The employment of NTP explicitly broadens the reaction pathways between PAC and cationic contaminants in the aqueous environment, which expands the application area of PAC materials in environmental sustainability.
研究领域:
环境科学
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材料科学
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DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2026
·Vol. 61
·期 44
·34779-34794
·
IF 4.4
Wen Lihan,Shen Juan,Wu Shuangxian,Jin Bo
Radioactive strontium ( 90 Sr) contamination in water bodies poses one of the most persistent and serious threats to both ecological safety and public health, owing to its long half-life, high environmental mobility, and strong propensity for biological accumulation. However, a rapid and sustainable synthetic route for bimetallic MOF-74 with high Sr 2+ adsorption capacity remains lacking. This study reports a solvent‑free mechanochemical strategy for the synthesis of a bimetallic Cu/Zn-MOF-74 (CZ-M74-11) using a spiral gas-solid flow (S-GSF) method in just 1 min. The material achieves 98.26% Sr 2+ removal within 15 min and exhibits a maximum Langmuir adsorption capacity of 295.13 mg·g −1 at 303.15 K. Kinetic and thermodynamic analyses indicate that the adsorption is spontaneous and exothermic. XPS and FT-IR analyses, together with cyclic desorption data, reveal that Sr 2+ uptake proceeds primarily through outer-sphere complexation, with a minor contribution from inner‑sphere coordination involving carboxylate groups. This work addresses the gap in rapid and sustainable routes for bimetallic MOF-74 synthesis by introducing an S-GSF method that achieves excellent adsorption capacity and ultrafast kinetics for Sr 2+ removal. Graphical abstract
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高影响因子
CERAMICS INTERNATIONAL
·
2024
·Vol. 50
·期 24
·54557-54565
·
IF 5.1
Minghao Xu,Kaihui Hua,Bo Di,Yu Zheng,Qun Zeng,Pinhai Gao,Xiuan Xi
BaTiO 3 (BT)-based ceramics have recently become one of the most promising lead-free piezoelectric ceramics . However, its overall performance still falls short of meeting the demands for multifunctional applications. Although phase boundary regulation can enhance the piezoelectric properties , BT ceramics have very separate phase transition temperatures for different phases. This leads to the difficulty of achieving multiphase coexistence at room temperature (RT). In this work, based on doping 0.08 mol Zr 4+ , the lead-free Ba 1- x Sr x Ti 0.92 Zr 0.08 O 3 [ x = 0, 0.04, 0.08, 0.12, 0.16, 0.20 (mol), B 1- x S x TZ] piezoelectric ceramics were prepared using the solid-state reaction method, and the effect of the Sr 2+ doping level on the multiphase structural evolution and piezoelectric properties was systematically investigated. The results demonstrated that with the increase in the Sr 2+ doping content, multiphase coexistence within the B 1- x S x TZ ceramics was successfully achieved at RT. Moreover, it showed significant synergistic improvements in piezoelectric, dielectric , and electric-field-induced strain properties. At the doping level of about x = 0.16 mol, the key performance metrics of the piezoelectric ceramics were optimal. The d 33 at room temperature reached ∼447 pC/N, k p ∼0.49, and ε r ∼4649. Under an applied electric field of 10 kV/cm, S pos was ∼0.092 %, and d 33 ∗ was ∼895 p.m./V. Therefore, this study provides new insights into the progress of advanced lead-free piezoelectric materials for multifunctional applications.
研究领域:
材料科学
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陶瓷与复合材料
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压电材料
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固体物理
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功能材料
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Taotao Lu,Yongfeng Zhu,Yuru Kang,Jiang Xu,Aiqin Wang
The radioactive Rb + , Cs + and Sr 2+ have serious threat for the aquatic life and human health, its removal has been granted increasing concern. Hence the adsorbent with excellent adsorption performance and favourable reusability is strongly demanded. This work prepared a novel porous polymer of chitosan- g -polyacrylamide (CTS- g -PAM) by grafting the acrylamide (AM) onto the chitosan (CTS) with sufficient pore structure via an eco-friendly surfactant-free (corn oil)-in-water Pickering medium internal phase emulsion (O/W Pickering MIPE), solely stabilized by CTS. Interestingly, its pore structure could be tuned by varying the emulsion character via changing the molecular weight and concentration of CTS, as well as the pH values. Due to the abundant –COO − and −NH 2 functional groups in the porous material of CTS- g -PAM, the high adsorption capacities of 195.43, 237.44 and 185.63 mg/g for Rb + , Cs + and Sr 2+ could be reached within 40, 30 and 20 min, respectively. Moreover, the CTS- g -PAM had excellent regeneration ability and reusability. Herein, we provided a feasible and low-cost pathway for preparation of the porous adsorbent with tunable porous structure for adsorption and separation application.
研究领域:
环境科学
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材料科学
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PubMed
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 45
·17163-17173
·
IF 8.067
Xiaoli Luo,Qichen Chen,Hongbo Guo,Cheng Chen,Qianqian Ren,Heng Zhang,Xiaowei He,Wu Zhao
As a new type of optical imaging, fluorescence molecular tomography (FMT) has great potential in the field of biomedicine. However, current fluorescent probes still have some limitations that make in vivo FMT imaging quite challenging. In this study, Cit-NaYb0.98−xF4:2%Tm3+/x%Sr2+ upconversion nanoparticles (UCNPs) were successfully prepared by a one-step hydrothermal method, which overcomes the shortcomings of most organic small molecular fluorescent dyes. Importantly, Sr2+ doping can not only significantly reduce the radius of NaYbF4 but also considerably enhance the 800 ± 10 nm emission by about 35.5 times. CCK-8 assay and confocal laser scanning microscopy images (CLSM) also showed that the toxicity of NaYb0.93F4:2%Tm3+/5%Sr2+ to HeLa cells was decreased due to size reduction. In vitro and in vivo experiments showed that the UCNPs have excellent FMT imaging quality. After using the Compressive Sampling Matching Pursuit (CoSaMP) algorithm for 3D reconstruction, the location error of the fluorophore center was small, and the reconstructed target shape was close to that of the real light source. The reconstruction results further proved the feasibility and efficiency of Cit-NaYbF4:2%Tm3+/x%Sr2+ UCNPs for in vivo FMT imaging. This kind of UCNPs has been applied to FMT imaging and 3D reconstruction in vivo for the first time, promoting the development of FMT technology.
研究领域:
生物医学工程
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光学成像
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纳米材料科学
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高影响因子
Science China-Technological Sciences
·
2026
·Vol. 69
·期 4
·1420501
·
IF 5.1
Zhang Mingdong,Zhang Yan,Yuan Aocheng,Feng Meiling,Mu Jingli
Metal sulfide ion exchangers (MSIEs) are promising for radioactive wastewater treatment due to their soft S 2− -containing frameworks and ion-exchange capabilities. However, their fine powder form and susceptibility to competing ions limit practical application in complex water matrices. Herein, we developed a novel MSIE-based composite, K 2 ZnSn 2 S 6 nanosheets/cationic polyacrylamide (KZTS-NS/CPAM) flocs, integrated with an improved accumulative countercurrent adsorption (iACA) process for effective Cs + , Sr 2+ , and Co 2+ removal. The composite flocs exhibited good settling performance, achieving complete sedimentation within 40 s. Their maximum adsorption capacities ( q m ) reached 106.7, 43.54, and 40.54 mg/g for Cs + , Sr 2+ , and Co 2+ , respectively, close to or even higher than those of KZTS-NS. The adsorption kinetics were rapid, reaching equilibrium within 40 min. Furthermore, the flocs showed broad pH tolerance (removal efficiencies ⩾86.93% for Cs + at pH 4–11, ⩾95.10% for Sr 2+ at pH 3–12, and ⩾96.17% for Co 2+ at pH 1–8) and ultrahigh selectivity for Co 2+ (distribution coefficients up to 6.63×10 6 mL/g under competitive conditions). When integrated with the iACA process, >93% of Cs + and >99% of Sr 2+ and Co 2+ were removed from tap water. Notably, 93.76% of Co 2+ was removed from seawater without microfiltration, benefiting from both the composite’s strong selectivity and excellent settling behavior. The average turbidity of the effluents was as low as 28.6 NTU. Thus, no additional solid-liquid separation step was needed. Mechanistic studies confirmed three key pathways: (1) ion exchange between Cs + /Sr 2+ /Co 2+ and interlayer K + in KZTS-NS; (2) amide complexation by CPAM for Sr 2+ and Co 2+ ; and (3) surface precipitation for Co 2+ forming Co 1.2 Zn 2.8 S 4 . Overall, this material-process integration provides an innovative strategy for radionuclide remediation in actual and high-salinity water environments, offering new insights into the design of processable composite adsorbents and advanced treatment processes.
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高影响因子
Journal of Materials Chemistry C
·
2025
·
IF 5.1
Xuekai Wang,Yongze Cao,Guangming Niu,Huanhuan Zhang,Xianglan Yan,Yichao Wang,Sai Xu,Baojiu Chen
Er3+/Yb3+/Sr2+-doped L-Ta2O5 upconversion phosphors were synthesized using the molten salt method with B2O3 as the solvent. High-resolution transmission electron microscopy (HRTEM) results showed that Er3+/Yb3+/Sr2+ underwent intercalated intergrowth in L-Ta2O5. This structure facilitates energy transfer from Yb3+ to Er3+, resulting in outstanding pure green upconversion luminescence (UCL) intensity. The green UCL integrated intensity of L-Ta2O5:Er3+/Yb3+/Sr2+ was 1.53 and 3.14 times greater than that of β-NaYF4:Er3+/Yb3+ and the optimal NaY(WO4)2:Er3+/Yb3+ samples, respectively. The absolute and relative temperature sensitivity reached 1.383% and 0.992% K−1, respectively. The shift rate of the peak centroids reached 0.273 nm GPa−1 under high pressure. With its excellent performance, L-Ta2O5:Er3+/Yb3+/Sr2+ can be used in the fields of UCL display, temperature and pressure sensing.
研究领域:
材料科学
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光学
·
无机化学
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Zheng Qian,Kunpeng Jia,Ruirui Ma,Yi Xu,Shunhang Dong,Jie Chen,Qiuyang Zhang,Changjiang Pan
Titanium and its alloys, widely used as orthopedic implants, frequently encounter clinical implantation failure due to insufficient antimicrobial and osteogenic activities. To address these problems, a bioactive multifunctional coating (named TNPTL/Sr@TET) was established on titanium surfaces in this study. Bone-like porous TiO 2 nanotubes (TNT) were first constructed via anodic oxidation, followed by bio-functionalization involving the loading of Sr 2+ ions (TNPTL/Sr) mediated by phase-transited lysozyme (PTL) and the covalently grafting of bone-targeted tetracycline (TET) via the carbodiimide reaction. The morphology, chemical constitution, and surface wettability of the prepared coatings were thoroughly characterized via Scanning Electron Microscopy, Energy Dispersive Spectroscopy, X-ray Photoelectron Spectroscopy, Attenuated Total Reflection-Fourier Transform Infrared Spectroscopy, and water contact angle measurement. The results showed that regular TiO 2 nanotube arrays were developed with an average inner diameter of about 52 nm and a wall thickness of about 16 nm. Analysis of characteristic elements and functional groups confirmed that the amyloid-like PTL layer, Sr 2+ ions, and TET were effectively immobilized on the nanotubes in turn. The TNPTL/Sr@TET coating reduced the inner diameter, increased the wall thickness and roughness of nanotubes, and significantly improved the hydrophilicity of titanium surfaces. The TNPTL/Sr@TET coating accelerated in-situ deposition of cauliflower-like apatite, promoted early adhesion and proliferation of osteoblasts, and upregulated alkaline phosphatase, osteocalcin, and runt-related specific transcription factor-2. The TNPTL/Sr@TET coating also demonstrated strong antibacterial activity against S. aureus and E. coli . The TNPTL/Sr@TET coating presented here provides an innovative strategy to enhance both the osteogenic and antibacterial properties of titanium implants.
研究领域:
生物材料
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纳米技术
·
表面工程
·
生物医学工程
·
骨科
·
抗菌材料
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组织工程
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Na Yang,Xu Guo,Jing Yu,Qi Liu,Jingyuan Liu,Jiahui Zhu,Rongrong Chen,Jun Wang
The rational use of solar energy to achieve photothermal conversion is an attractive strategy to promote the efficient removal of radioactive Cs + and Sr 2+ from nuclear wastewater. Herein, a photothermal adsorbent of composite aerogel with three-dimensional porous structure is fabricated by integrating prussian blue analogues (PBAs) and straw biochar into the chitosan (CS) and waste leather scrap hydrolysate (WLSH) aerogel matrix (CS/WLSH/C/PBAs). The local heating effect generated by CS/WLSH/C/PBAs aerogel induce to generate steam, accelerating the enrichment of Cs + and Sr 2+ in the solution, which increase their interaction with the CS/WLSH/C/PBAs and improves their adsorption rates and capacities. Under simulated sunlight, the adsorption equilibrium times for Cs + and Sr 2+ by CS/WLSH/C/PBAs are shortened from 5 h in the dark condition to 2 h, with maximum adsorption capacities of 156.0 and 95.1 mg/g for Cs + and Sr 2+ , respectively. Meanwhile, the CS/WLSH/C/PBAs aerogel also exhibits excellent reusability. Notably, the Cs + and Sr 2+ still can be efficiently removed in simulated seawater. Encouragingly, the CS/WLSH/C/PBAs aerogel also exhibits excellent adsorption properties for dyes and oils. This work provides insights for the design of multifunctional and efficient composite adsorbents, and paving a promising way for enhancing the adsorption of Cs + and Sr 2+ through solar energy.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Tallat Munir,Jiawei Zhou,Ming Liu,Shiyang Bai,Jihong Sun
A highly effective synthetic clinoptilolite (SCP) was developed and assessed for its potential in the simultaneous removal of Cd 2+ , Ni 2+ , Mn 2+ , Sr 2+ , and Fe 3+ from an aqueous solution. The present work explored the influences of SCP dosage, initial metal ion concentrations, temperature, contact time, and pH value on the adsorption performances of these metal ions. The results revealed exceptionally high adsorption capacities, reaching 2000, 1720, 1875, 1510, and 22 mg/g for Ni 2+ , Fe 3+ , Cd 2+ , Mn 2+ , and Sr 2+ , respectively. The specific surface area of SCP increased from 31.4 to 44.7 m 2 /g after five cycles. The adsorption mechanism and structure assessment were elucidated by XRD patterns and SEM images, showing that the Fe 3+ adsorption conformed to the Langmuir isotherm, while that of Mn 2+ , Cd 2+ , Sr 2+ , and Ni 2+ followed the Freundlich isotherm model with the adsorption kinetics best described by the pseudo-2nd-order kinetic model. Thermodynamic parameters showed endothermic behavior for Cd 2+ , Ni 2+ , Mn 2+ , and Sr 2+ , exothermic for Fe 3+ , and spontaneity for all metals except Sr 2+ . SCP retained over 90 % of its adsorption capacity after five regeneration cycles, maintaining structural integrity under thermal, acidic, and recycling conditions. These findings highlight SCP’s robust characteristics, reusability, and potential for sustainable heavy metal removal from wastewater.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
危险品化学品经营许可证（带存储）