CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Gulizhabaier Abulipizi,Yuxin Wang,Yanlun Fang,Yicheng Xu,Chaomin Qu,Ziang Zong,Leping Ding,Zimin Yu,Juanjuan Zhou,Zhanjun Li
Most of near-infrared (NIR) persistent luminescence (PersL) materials can only be activated by ultra violet-visible light illumination or X-ray irradiation, which hinders their advanced biomedical applications. Herein, NaYTi 2 O 6 : Cr, with a typical double-metal perovskite structure, is developed with ∼758 nm emission after being excited by 700 nm light within the NIR bio-imaging window. This NIR-to-NIR PersL property can be repeatedly charged by 700 nm NIR illumination in situ and in vivo . The anti-cite disorder of Na + -Y 3+ pair and relatively low bandgap of NaYTi 2 O 6 matrix are the vital factors of this property. NaYTi 2 O 6 : Cr has great potential to be applied as a functional ceramic coating in designing self-luminescent medical Ti-implants, so that it can be imaged in vivo by using NIR PersL imaging rather than conducting risky X-ray fluoroscopy imaging. This conceptual work not only provides a NIR-to-NIR PersL biomaterial but also is significant in designing visible medical implants.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·Vol. 31
·期 20
·29264-29279
·
IF 0
Lyu Shiqi,Abidin Zurina Zainal,Yaw Thomas Choong Shean,Resul Mohamad Faiz Mukhtar Gunam
Guided by efficient utilization of natural plant oil and sulfur as low-cost sorbents, it is desired to tailor the porosity and composition of polysulfides to achieve their optimal applications in the management of aquatic heavy metal pollution. In this study, polysulfides derived from soybean oil and sulfur (PSSs) with improved porosity (10.2–22.9 m 2 /g) and surface oxygen content (3.1–7.0 wt.%) were prepared with respect to reaction time of 60 min, reaction temperature of 170 °C, and mass ratios of sulfur/soybean oil/NaCl/sodium citrate of 1:1:3:2. The sorption behaviors of PSSs under various hydrochemical conditions such as contact time, pH, ionic strength, coexisting cations and anions, temperature were systematically investigated. PSSs presented a fast sorption kinetic (5.0 h) and obviously improved maximum sorption capacities for Pb(II) (180.5 mg/g), Cu(II) (49.4 mg/g), and Cr(III) (37.0 mg/g) at pH 5.0 and T 298 K, in comparison with polymers made without NaCl/sodium citrate. This study provided a valuable reference for the facile preparation of functional polysulfides as well as a meaningful option for the removal of aquatic heavy metals.
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PubMed
LANGMUIR
·
2025
·
IF 3.9
Ruixin Lai,Xin Su,Xiaping Zhu,Ping Zhao,Wei Ren
A composite hydrogel microsphere (LDH/SA/PEI) with a three-dimensional honeycomb-like porous structure was fabricated using Mg–Al layered double hydroxide (LDH) as the matrix material, sodium alginate (SA) and polyethylenimine (PEI) as gel precursors, and a CaCl2/FeCl3 mixed solution as the hybrid cross-linking agent. The LDH/SA/PEI has realized the synergistic adsorption–reduction removal of Cr(VI) from wastewater. The optimal preparation process consists of 1.5 wt % SA, 4 vol % PEI, 4.5 wt % CaCl2, and 0.1 mol/L FeCl3. The maximum Cr(VI) adsorption capacities of 79.6–118 mg/g between 25 and 55 °C are accessed at 12 g/L LDH and pH 2 within 300 min. Kinetic and thermodynamic analyses reveal that the removal of Cr(VI) by the LDH/SA/PEI involves three distinct stages, surface diffusion, intramesopore diffusion, and intramicropore diffusion, which exhibits strong agreement with the intraparticle diffusion model (R2 > 0.95). The ΔG values of the reactions are all less than 0, with a ΔH of 35.3 kJ/mol and a ΔS of 126.8 J mol–1 K–1, indicating a chemisorption-dominated spontaneous endothermic process. Scale-up experiments confirm that 3 g/L LDH/SA/PEI can reduce the Cr(VI) concentration from 20 to <0.5 mg/L within 180 min. This study provides a novel material fabrication strategy with high adsorption capacity, mechanical stability, and sustainability for Cr(VI)-containing wastewater treatment, which has significant implications for anion-polluted industrial wastewater and the functional development of LDH-based composites.
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PubMed
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2025
·
IF 11.3
Dashi Lei,Yiyao Zhang,Xiaofei Sun,Liqin Li,Qingchao Zhao,Xiangyu Peng,Juanqin Xue,Yubin Wang,Jing Zhang
Reduced chromite ore processing residue (rCOPR) is vulnerable to the surrounding conditions in environments, which can induce the release and oxidation of Cr(III). This work found the synergistic effect of light and sulfite on destroying rCOPR stability, causing the significant release of Cr(VI), which was 4∼7 times higher than that under single factor action. In CrxFe1–x(OH)3/sulfite/light system, Cr(VI) release rate could reach 11.11 × 10–7 M min–1 g–1, because of the rapid formation of ·OH, O2·–, SO4·–, and quadrivalent iron [Fe(IV)]. In addition, this study found that the oxidized chromium residue could continuously release Cr(III) after being transferred to the dark environment. This should be attributed to the obvious change in the iron coordination structure of rCOPR caused by the catalytic reaction of sulfite with light, which greatly weakened the ability of the Fe–O structure to encase chromium elements in a solid. These insights are crucial for predicting the environmental risks of rCOPR in the presence of visible light and sulfur-containing compounds.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Naichuan Yu,Xianhong Zeng,Xingning Ma,Yu Sun,Yixuan Wang,Bingbing Chen,Zhaoqi Luo,Chaofang Dong,Kun Shen,Junsheng Wu
Treating real electroplating wastewater is challenging due to the coexistence of organic contaminants and heavy metal ions, which collectively increase toxicity and pose serious risks to human and environmental health. In this study, the simultaneous removal of a typical organic pollutant (benzodiacetone) and a heavy metal ion (Cr(VI)) from electroplating effluent was investigated using a heterogeneous electro-Fenton process catalyzed by a novel Ce-Fe 2 O 3 /Al 2 O 3 material. Comprehensive characterization and theoretical calculations confirmed the excellent catalytic performance of the synthesized catalyst. Under near-neutral conditions, the electro-Fenton system achieved removal efficiencies of 99.1 % for benzodiacetone and 98.8 % for Cr(VI). The mechanism of simultaneous degradation was explored, revealing that Ce doping enhanced Fe redox cycling by lowering the binding energy between H 2 O 2 and Fe and facilitating electron transfer from Fe (III) to Fe (II). Additionally, Ce doping improved the stability and reusability of the catalyst. And the Ce could also extend the lifetime and reusability of the catalyst. This work developed a highly efficient heterogeneous catalyst in the electro-Fenton process and demonstrated that the Ce-Fe 2 O 3 /Al 2 O 3 catalyst had a superior application potential in synergic removal of Cr(VI) and benzodiacetone area.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Huizhen Wang,Pengfei Yang,Dongzheng Liu,Mengzhen Yu,Bowen Zhou,Yubing Zhang,Zhenyu Xiao,Weiping Xiao,Zexing Wu,Lei Wang
Developing efficient electrocatalysts for hydrogen evolution reaction (HER) in full pH range can promote the practical applications of hydrogen energy. In this work, nitrogen doped carbon nanosheets supported RuM (Mo, W, Cr) (RuM/NCN) are prepared through an ultrafast microwave approach. The carbon nanosheet structure coupled with the ultrasmall RuM nanoparticles can expose rich active sites to optimize the catalytic activity. Moreover, the strong metal-support interactions also favor to accelerate the reactions kinetics and improve stability. Thus, the developed RuMo/NCN (RuW/NCN) show excellent HER catalytic activities with overpotentials of 72 (75) mV, 82 (82) mV and 124 (1 1 9) mV to reach current density of 10 mA cm -2 in 1 M KOH, 0.5 M H 2 SO 4 and alkaline seawater , respectively, and also achieve excellent performance in 1 M PBS. This work provides a valid and novel avenue to design efficient electrocatalysts in renewable energy-related fields.
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高影响因子
Journal of Environmental Sciences
·
2023
·
IF 6.9
Lei Zheng,Lixia Sun,Jiangbo Qiu,Junling Song,Luyi Zou,Yue Teng,Yongzhong Zong,Hongyan Yu
The coexistence of inorganic and organic contaminants is a challenge for real-life water treatment applications. Therefore, in this research, we used NH 2 -MIL-125(Ti) to evaluate the single adsorption of hexavalent chromium (Cr(VI)) or Rhodamine B (RhB) in an aqueous solution and further investigate simultaneous adsorption experiments to compare the adsorption behavior changes. The main influencing factors, for example, reaction time, initial concentration, reaction temperature, and pH were studied in detail. In all reaction systems, the pseudo-second-order kinetic and Langmuir isotherm models were well illuminated the adsorption progress of Cr(VI) and RhB. Thermodynamic studies showed that the adsorption process was spontaneous and endothermic. As compared to the single system, the adsorption capacity of Cr(VI) in the binary system gradually decreased as the additive amount of RhB increased, whereas the adsorption capacity of RhB in the binary system was expanded brilliantly. When the binary reaction system contained 100 mg/L Cr(VI), the removal rate of RhB increased to 97.58%. The formation of Cr(VI)-RhB and Cr(III)-RhB complexes was the cause that provided facilitation for the adsorption of RhB. These findings prove that the interactions during the water treatment process between contaminants may obtain additional benefits, contributing to a better adsorption capacity of co-existing contaminant.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 34
·15503-15513
·
IF 3.591
Xu Yang,Yuhong Zhou,Zhaojie Sun,Chunhui Yang,Dongyan Tang
The integrated combination of zeolitic imidazolate framework-8 (ZIF-8) into electrospun fibers and surface functioned polyacrylonitrile (PAN) fibers with polydopamine (PDA) both showed great potential in the removal of heavy metal ions (such as Cr(VI)) from aqueous solution in our previous works. Based on these results, here we report a more facile strategy to fabricate composite ZIF-8@PDA/PAN fibers as efficient adsorbents by PDA coating assisted ZIF-8 continuous growth on electrospun PAN fibers. Benefiting from the abundant functional groups (including amino and hydroxyl) of PDA, ZIF-8 particles effectively grew and were loaded on the surface of fibers with uniform distributions and thicker ZIF-8 layers were obtained easily by prolonging the reaction time. The obtained composite ZIF-8@PDA/PAN fibers retained higher surface areas (the maximum of 299.9 m2 g−1) and appropriate pore sizes, meanwhile they exhibited super hydrophilicity and good water stability, which are well known to be vital for the removal of Cr(VI). Thus, the composite fibers exhibited significant removal efficiency (especially more than 90% at a lower initial Cr(VI) concentration) and also higher adsorption capacity (with a maximum of 212.7 mg g−1) and good recyclability.
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高影响因子
Journal of Cleaner Production
·
2022
·
IF 11.072
Jing Wang,Ru-yi Zhou,Jun-xia Yu,Hui-sheng Wang,Qiu-yan Guo,Ke-qi Liu,Hao-dong Chen,Ru-An Chi
Hydrometallurgy leaching is a common method used to recycle heavy metals from electroplating sludge , but the subsequent separation of heavy metals from the complex leaching solution is difficult. In this study, Cu(II), Zn(II), and Cr(III) were sequentially recycled from electroplating sludge by an on-line biosorption method with dosage controlling. The results showed that the three metals mainly existed in their labile forms and could be leached by HNO 3 . A series of amine-modified bagasse biosorbents were prepared, and diethylenetriamine-modified sorbent was chosen and fixed in a column to remove heavy metals from the leaching solution. Sorbent dosage experiments showed Cu(II) was recycled exclusively at a dosage of 1.5 g/L, while Zn(II) and Cr(III) were recycled simultaneously at a dosage of 3.8 g/L when treating 800 mL of a leaching agent containing 13.4, 9.9, and 7.1 mg/L of Cu, Zn, and Cr. A linear relationship between the dosage and amount of adsorbed metal ions was obtained. The XPS results illustrated that the column had an adsorption affinity order of Cu(II)>Zn(II), Cr(III)≫Ca(II), Mg(II). Cu(II) was enriched in the foot layer, and Zn(II) and Cr(III) were enriched in the middle layer of the column, while co-ions could not be absorbed. According to these results, Cu(II), Zn(II), and Cr(III) could be sequentially recycled by using these columns in-series.
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高影响因子
Small
·
2025
·
IF 12.1
Jie Huang,Kangpeng Jin,Chen Li,Hao Yang,Yiming Zhang,Xiyang Wang,Ming Huang,Zhen-Hua Ge,Liangwei Fu
Maximizing the average figure-of-merit ( ZT avg ) of thermoelectric (TE) materials is crucial for optimizing the module performance. Herein, this work enhances the ZT avg to 1.42 (298–673 K) in a n-type Mg 3 (Sb, Bi) 2 -based material by a stepwise optimization strategy. Specifically, Cr injects electron into Mg 3 Sb 0.8 Bi 1.19 Te 0.01 , which synergistically boosts carrier concentration and forms an electron accumulation layer at the interface. Meanwhile, lattice softening and interfacial scattering suppress lattice thermal conductivity. A peak ZT of 1.72 at 673 K and ZT avg of 1.30 over 298–673 K are achieved for Mg 3 Sb 0.8 Bi 1.19 Te 0.01 –1.5 wt.% Cr. Then, through grain refinement and Se doping instead of Te, a delicate equipoise is reached between the power factor and the electronic thermal conductivity. Eventually, the Mg 3 Sb 0.8 Bi 1.19 Se 0.01 –1.5 wt.% Cr sample obtains an outstanding ZT of ≈1.9 at 573 K and ZT avg of 1.42 over 298–673 K. The integrated two-pair full-Zintl YbZn 2 Sb 2 /Mg 3 (Sb, Bi) 2 module achieves a high conversion efficiency of 10.5% and power density of 0.37 W cm −2 simultaneously under a temperature difference of 370 K. More importantly, this module exhibits excellent thermal stability during a 10-day in situ test. This work provides new ideas for applications of full-Zintl modules to the recovery of waste heat.
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高影响因子
Journal of the Taiwan Institute of Chemical Engineers
·
2014
·
IF 2.637
Fenglian Fu,Min Hu,Bing Tang,Weijiang Han,Zihang Cheng
Chromium is a contaminant commonly found in water and soil because of its widespread use in various industries. Hexavalent chromium (Cr(VI)) is known to be highly toxic and carcinogenic, and the removal of Cr(VI) has attracted much scientific attention. In this paper, with the aid of polyoxometalate (POM), Cr(VI) removal increased significantly by acid-washed zero-valent iron (ZVI) under acid conditions in air. POM can mediate the electron transfer from ZVI surface to O 2 with enhancing the generation of H 2 O 2 , which is favorable for the removal of Cr(VI). The effects of iron loadings, POM concentrations, and initial pH values on the removal of Cr(VI) in ZVI/POM/air system were investigated and reaction mechanism was studied. Results indicated that POM is an efficient catalyst for Cr(VI) removal by acid-washed ZVI.
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高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2026
·
IF 3.5
Pengfei Tian,Yunan Shen,Yuzhe Hua,Xiyu Zou,Guangmin Ren,Qingjie Guo,Hongjing Tian
Mo vacancy (V Mo ) and Se vacancy (V Se ) are doped into Bi 2 MoO 6 (BMO) and ZnSe, respectively, while they are mechanically ground and mixed to fabricate the dual S-scheme heterojunction. The lattice distortion is observed at the interface between V Mo -BMO and V Se -ZnSe/CdSe (V Se -ZCS) while XPS results confirm the construction of the dual S-scheme heterojunction V Mo -BMO/V Se -ZCS (V Mo+Se -BZCS). DFT simulation demonstrate that the doping of V Mo and V Se lead to more electrons transferring spontaneously through the heterojunction interfaces and promote the IEF strength accordingly. Both in-situ XPS and fs-TAS characterization prove the presence of a fast photoinduced charge transfer pathway from V Mo -BMO to V Se -ZnSe under LED light irradiation. V Mo and V Se function as the holes trapping center in V Mo -BMO and the electron trapping center in V Se -ZCS, respectively, thereby effectively suppressing the electron-hole recombination, which enhances the redox capability of V Mo+Se -BZCS together with the fast charge transferring. During the photocatalytic degradation experiments for the wastewater containing both tetracycline (TC) and Cr(VI), both the TC and the Cr(VI) degradation efficiency of V Mo+Se -BZCS are competitive under either LED or xenon lamp irradiation in comparison with some reported catalysts. Dual doping of V Mo and V Se were testified to amplify the bi-directional promotion effects (BPEs) between TC and Cr(VI).
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高影响因子
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