NEW JOURNAL OF CHEMISTRY
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2024
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IF 2.7
Yufei Lei,Qi Li,Qian Li,Dongxiu He,Jinhua Xue,Lifu Liao,Jikai Wang,Xilin Xiao
In this paper, nitrogen-doped carbon dots (NCDs) were synthesized via a facile hydrothermal method using gum arabic (GA) and tris(hydroxymethyl)methyl aminomethane (tris) as precursors. The resultant NCDs show uniform size distribution and stable optical performance. Then a fluorescent signal quenching probe based on NCDs was proposed for the quantitative detection of mercury ions (Hg2+). The developed fluorescent nanoprobe based on NCDs demonstrated a good linear relationship in the range of 10 to 120 μM (R2 = 0.99265) for toxic mercury(II), with a detection limit of 4.87 μM. Additionally, the present assay system could be efficiently used for the detection of Hg2+ in real water samples with a satisfactory recovery rate (96.11–104.04%). The metal-free NCDs, which exhibited little cytotoxicity, were successfully applied to in vitro fluorescence imaging of human triple negative breast cancer (TNBC) cells, achieving visualization of Hg2+ in cells. With good water solubility and biocompatibility, the nitrogen-doped carbon dots synthesized by this economical and ecologically friendly process are suitable for use in analytical testing and biological research.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2024
·
IF 20.2
Zhen Sun,Maonan Ran,Guan Zhang
Solar-driven photocatalytic water splitting for hydrogen production is gaining dramatic interests, however, efficiencies are still not satisfied to make it technically applicable in large scale. Herein, we have observed unconventional high-temperature effects on the change of intrinsic photophysical properties of semiconductors, and demonstrated dual synergistic photothermal effects in promoting hydrogen evolution from water reduction and cellulose pyrolysis at high temperature with metal oxides catalysts. Particularly, Zn/ZnO species deposited TiO 2 (Zn-TiO 2 ) catalyst showcased exceptional thermal-assisted photocatalytic H 2 production from water reduction along with cellulose decomposition at 573 K with quasi apparent quantum efficiency of nearly 100 % under 365±10 nm irradiation and solar to hydrogen (STH) efficiency of 2.72 %. In situ spectroscopic characterizations at 573 K corroborated that the absorption spectrum of Zn-TiO 2 could be extended into the near-infrared region (beyond 1200 nm), and electron-hole pair recombination is curbed and migration of photogenerated charge carriers within the catalyst is remarkably promoted at high temperature. In addition, experimental analysis and molecular dynamics simulations unraveled the synergistic photo-assisted thermal effects for cellulose pyrolysis, and delineated potential pathways for cellulose conversion at high temperature under light irradiation. This work paves the way for efficient utilization of whole solar spectrum for achieving sustainable water splitting and biomass waste utilization.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Shen Huasen,Li Zhaohuai,Li Jiantao,He Qiu,Li Mengjun,Tian Yunan,Wu Guoning,Zhao Yan,Zhang Xuanxuan,Xiao Jingjing,Amine Khalil,Li Yuyu,Xie Ming,Lu Jun
The growth of lithium (Li) dendrites and the accumulation of dead Li (i.e., Li metal regions which are electronically disconnected from the current collector) significantly undermine the safety and performance of Li metal batteries. This study employs kilogram–scale atomic layer deposition technology to construct zinc oxide with a preferential (002) crystal orientation, which homogeneously forms on commercial carbon nanotube papers. Our approach emphasizes the importance of achieving a moderate Li adsorption energy and low Li migration energy barriers to suppress Li dendrite growth. In this work, we introduce the concept of “catalytic” effect for dead Li reconversion, as validated through time–of–flight secondary ion mass spectrometry, leading to a Li plating/stripping efficiency of 99.89%. The Ah–level Li metal pouch cells with high–nickel positive electrodes achieve a specific energy of 380 Wh kg −1 (based on the mass of the whole pouch cell) and demonstrate stable cycling under demanding conditions. Analysis of the cycled pouch cells confirms the structural integrity and provides insights into the mechanism of the dead Li “catalytic” conversion.
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高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-13
·
IF 15.7
Liu Shaojia,Deng Jingjing,Zhao Hewei,Wang Tianbai,Lu Junfeng,Ding Baosen,Guo Tianqi,Ritchie Robert O.,Guo Lin
Stiffness-damping balance, high specific mechanical performance, and corrosion resistance are demanded for metals. Here, we developed an enamel-inspired ceramic (EIC) coating strategy involving hydrothermal growth of a tooth enamel-like ZrO₂ nanorods on Zr foil and amorphous ZrO₂ intergranular phase formation via controlled hydrolysis. The EIC coated Zr foil (Zr-EIC) achieved a high viscoelastic figure of merit (4.6 GPa); as well as excellent specific stiffness and hardness owing to the lightweight of ceramics, surpassing the values of Zr and previously reported Zr-based alloys or Zr-based composites. This was due to the vertically oriented stiff nanorods and unique energy dissipation derived from deformation at the crystalline/amorphous interfaces. It demonstrated exceptional NaCl corrosion resistance. This approach showed universality across Ti, Zn, and Cu substrates, enhancing both mechanical properties and corrosion resistance. By constructing an enamel-like hierarchical structure on the metal surface, the strategy overcomes traditional metal limitations without causing an increase in density.
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高影响因子
Surfaces and Interfaces
·
2024
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IF 5.7
Bohan Zhang,Chang Wen,Mingtao Xu,Qian Liu,Zhiyin Zhang,Hongbo Huang,Dapeng Wang,Zhengkai Tu
The development of acid-sensitive OER (Oxygen Evolution Reaction) electrocatalysts based on ruthenium oxides is a crucial step toward achieving large-scale hydrogen production in low-cost Proton Exchange Membrane (PEM) electrolyzers. However, a major challenge in this field is to overcome the tendency of ruthenium-based metal oxide dissolving in acidic environments, which affects long-term stability. In this study, we employed MIL-88B(Cr) as a precursor and used a two-step annealing method to prepare trimetallic metal oxides Cr 0.5 Co x Ru 0.5-x O 2-δ . Detailed experimental measurements demonstrate that the introduction of Co reduced the volume of individual catalyst crystallites without disrupting the rutile crystal structure and inherent activity of CrO 2 @RuO 2 . Simultaneously, Co and Cr doping lowered the oxidation state of Ru within the catalyst system. Lower oxidation states of Ru are more stable during the OER reaction, ensuring the stability of this catalyst to be at least 100 hours. Furthermore, Co incorporation raises the energy required for oxygen vacancy formation, reduced the involvement of lattice oxygen, and enhanced the catalyst's activity. The catalyst Cr 0.5 Co 0.17 Ru 0.33 O 2-δ with the best performance exhibited the overpotential of only 224 mV at 10 mA cm -2 in 0.5 M H 2 SO 4 . This study offers a viable strategy for developing highly active and stable catalysts in acidic media by controlling the electronic structure of RuO 2 .
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JOURNAL OF POWER SOURCES
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2025
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IF 7.9
Mingliang Li,Lu Tian,Xinning Huang,Jinxiao Dou,Jianglong Yu,Xingxing Chen
Aqueous zinc-ion batteries (AZIBs) are recognized as one of the most promising battery technologies, but dendrite growth and persistent parasitic reactions at the Zn anode hinder their practical use. This study employs cost-effective and source-abundant folic acid (FA) as a multifunctional electrolyte additive, which is self-assembled at the Zn anode, forming an effective layer improving the reversibility and stability of the zinc anode/electrolyte interface. In-situ Raman reveals the electrostatic shielding effect of the layer against SO 4 2− anions. In-situ scanning vibrating electrode technique (SVET) further verifies the superior inhibitory effect of the interface layer on Zn anode corrosion. Practically, Zn//Zn symmetric battery filled with ZnSO 4 /0.1 FA electrolyte achieves a prominent cycling stability of 9500 h at 0.2 mA cm −2 and 0.2 mAh cm −2 , and the constructed Zn//Cu half battery exhibits a high reversibility (99.69 %) after 1045 cycles. Strikingly, Zn//MnO 2 full battery also demonstrates outstanding charge/discharge durability for at least 900 cycles with a high reversibility of >99.94 % at 5 C. This study provides a novel paradigm for the development of environmentally benign and cost-efficient electrolyte, pivotal in realizing exceptionally reversible AZIBs.
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JOURNAL OF SOLID STATE CHEMISTRY
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2024
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IF 3.2
Hongyan Zhang,Jiehui Huang,Yuxiang Shen,Zuofang Yao,Chenchen Xing,Yanping Hou
Z-Scheme heterojunction photocatalysts can effectively suppress the recombination of charge carriers while maintaining high redox capacity. In this study, ZnTe/WO 3 (ZW) Z-scheme heterojunction photocatalysts were synthesized using a hydrothermal method, and a series of photocatalytic materials were prepared for the simultaneous removal of tetracycline (TC) and Cu(II) from water. The physicochemical and photoelectrochemical properties of the catalytic materials were characterized through various methods, including SEM, XRD, XPS, and others. The experimental results indicate that the ZW-10 % composite material exhibits the most significant removal efficiency for pollutants. Within 150 min of visible light irradiation, the removal rates for TC and Cu(II) reach 73.8 % and 73.3 %, respectively, representing a substantial improvement compared to individual ZnTe and WO 3 . Free radical capture experiments and electron spin resonance analysis reveal that ·O 2 − and ·OH are the key reactive species responsible for TC oxidation, while electrons (e − ) dominate the reduction of Cu(II).
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INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Yaozu Mi,Shuo Zhang,Haohao Yan,Genji Yang,Hua Yang,Yang Zhou,Lei Miao,Xinyan Gao,Yaqi Hong,Hailian Zang,Chunyan Li
In this study, we utilized typical Chinese medicine herbal residues (CMHRs)－Scutellaria baicalensis ( Scutellaria baicalensis Georgi) residue (SR), as the raw material and employed Na 2 SiO 3 and Fe 2 (SO 4 ) 3 as modifying agents to fabricate a novel and multifunctional hydrochar (FeSi-SRHC), which was designed for comprehensive removal of typical contaminants such as Cu 2+ , Zn 2+ , tetracycline (TC), and ciprofloxacin (CIP), along with relevant bio-contaminants (resistant bacteria (RBs) and resistance genes (RGs)) present in wastewater. Based on the analysis of adsorption kinetics and Freundlich isotherm, it was found that FeSi-SRHC exhibited physical monolayer adsorption for Cu 2+ /Zn 2+ while mainly chemical multilayer adsorption for TC/CIP in single-contamination system. Furthermore, Langmuir isotherm demonstrated excellent adsorption capacity of FeSi-SRHC towards Cu 2+ /Zn 2+ /TC/CIP with maximum capacities of 255.75, 265.26, 425.53, and 404.86 mg/g, respectively. In the co-contamination system, the presence of Cu 2+ , Zn 2+ , TC, and CIP exhibited varying degrees of inhibitory or promotive effects on the mutual adsorption by FeSi-SRHC. This divergence stemmed from differences in complexation intensities and concentration ratios among diverse co-existing contaminants. Based on XPS and Density Functional Theory (DFT) analyses, the adsorption process for Cu 2+ , Zn 2+ , TC, and CIP by FeSi-SRHC primarily involves pore fill, complexation reactions, ion exchange, hydrogen bonding, π-π stacking interactions, and electrostatic interactions. Bio-contaminant removal experiments revealed that the release of baicalin and wogonoside from FeSi-SRHC disrupts the structure of RBs cells and compromises the integrity of resistance plasmids. The practical application experiment showed that FeSi-SRHC displayed favorable performance for removing heavy metals, antibiotics, and bio-contaminants in actual wastewater. This study presented a “Treating waste with waste” strategy, which provided a method with low carbon, eco-friendly, and inexpensive for CMHRs resources and turning waste into treasure while proposing a idea to address the challenges associated with treating heavy metal, antibiotic, and bio-contaminant contamination in wastewater.
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高影响因子
Inorganic Chemistry Frontiers
·
2025
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IF 6.4
Mengqi Man,Yong Guo,Tianran Hu,Ying Sun,Aikai Yang,Xiqing Chen,Xingchao Wang
The preparation of SiOx materials that exhibit enduring stable cycling performance and high initial coulombic efficiency (ICE) through cost-effective methods remains a substantial hurdle. Herein, a hybrid carbon-coated SiO-20/G@TMA composite was synthesized using an integrated strategy that combines high-energy ball milling and high-temperature carbonization, employing graphene (G) and trimeric acid (TMA) as carbon sources. The three-dimensional crosslinked conductive network, formed by the mechanically flexible graphene and the carbon-rigid TMA, induces the generation of a LiF-rich SEI film. This film reduces interfacial side reactions and improves the ICE to 74.2%. Furthermore, the SiO-20/G@TMA electrode, characterized by a rigid–flexible hybrid structure, demonstrates excellent capacity retention and impressive rate performance over extended cycling periods. The discharge capacity of the SiO-20/G@TMA anode reaches 848.3 mA h g−1 at a current density of 0.5 A g−1, with a reversible capacity of 77% (about 649.1 mA h g−1) maintained after 600 cycles. When paired with a LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode, the SiO-20/G@TMA anode achieves a reversible capacity of 140.0 mA h g−1 at the current density of 0.2 A g−1. After 100 cycles, the capacity retention rate is 85% and the energy density is 474.7 Wh kg−1.
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Journal of Environmental Chemical Engineering
·
2025
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IF 7.2
Feng Feng,Jiaying Zhang,Lu Yu,Haixin Wang,Heda Ding,Jifan Cheng,Miaolan Wang,Fangfang Chen,Jiahui Zhang,Lingling Guo,Chunshan Lu,Qunfeng Zhang,Xiaonian Li
In order to develop an efficient and environmentally friendly method for the recovery of precious metals, a functionalized ionic liquid containing free radicals (1-methyl-3-(2-oxo-2-(2,2,6,6-tetramethyl-1-oxo-4-piperidinoxy) butyl) imidazole trichloro-1-bromoaluminium salt) was designed and synthesized. This was achieved by combining 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO), which possesses oxidizing properties, with halide ions that exhibit complexing abilities. Notably, under optimal conditions, a maximum gold dissolution rate of 100 % was attained. X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Raman spectroscopy analyses were conducted to elucidate the dissolution mechanism. Ultimately, these functionalized ionic liquids can be utilized for the dissolution of precious metals in CPU pins and waste catalysts. This study presents an effective approach for the recovery of precious metals.
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Journal of Water Process Engineering
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2025
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IF 6.7
Peng Xu,Na Li,Pengfei Zhu,Ruoxi Wu
The use of the zero-valent copper activated peroxysulphate system (Cu(0)/PS system) has been widely studied for pollutant degradation. However, the presence of Cu(I) in the Cu(0)/PS system was limited due to the interaction of Cu(I) with O 2 and the occurrence of disproportionation reaction, which greatly reduced the effectiveness of the Cu(0)/PS system. To solve this problem, chloride ion (Cl − ) were introduced into the Cu(0)/PS system (Cl − /Cu(0)/PS system). When 10 mM Cl − was added to the Cu(0)/PS system, the degradation rate of tetracycline (TC) was enhanced from 48.5 % to 81.0 % within 8 min, while the reaction rate was also increased by about 2.5 times. The results indicated that the presence of Cl − significantly restricted the disproportionation and ineffective oxidation of Cu(I) by forming a stable Cu Cl complex with Cu(I). This ultimately enhanced the utilization of Cu(I). Furthermore, Cl − facilitated the reaction between Cu(0) and Cu(II) to produce CuCl, thereby establishing the Cu(II)/Cu(I) cycle, which was more conducive to the production of Cu(I). The main reactive species in the Cl − /Cu(0)/PS system were sulfate radicals (SO 4 − ), hydroxyl radicals ( OH), and reactive chlorine species (RCS). Overall, Cl − incorporation is a viable facilitator for the Cu(0)/PS system.
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JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2024
·Vol. 171
·期 2
·027515
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IF 3.1
Xinqin Zhang,Rui Cao,Zehua Chen,Liling Zhou,Peipei Li,Hui Zhang,Ju Wu
Chloramphenicol (CAP), a broad-spectrum antibiotic, has severely impacted human health and the ecological environment, which brings an increasing demand for an efficient monitoring technology for rapid and sensitive antibiotic residue detection. Herein, a highly sensitive and selective electrochemical sensor was developed for detecting CAP, based on the synergistic effect of β-cyclodextrin (β-CD) and CuO-nanomaterials modifying glassy carbon electrode (GCE). Scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD) spectrometry were used for morphological characterization. β-CD/CuO/GCE sensor with high-specific surface area and cavity structure was prepared by modifying GCE for further electrochemical testing. Experimental parameters were optimized using square wave stripping voltammetry. The developed sensor obtains an ultra-wide linear range from 1.0 × 10−7 mol l−1 to 5.0 × 10−4 mol l−1and the limit of detection is 0.5 × 10−7 mol l−1. The sensor displays high sensitivity, remarkable stability, and reproducibility; particularly more convenient than the Liquid chromatography-mass spectrometry (LC-MS) verification method. Furthermore, the applicability of the developed β-CD/CuO/GCE sensor was demonstrated by detecting CAP in food samples.
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