Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Yanxi Chen,Fanyun Su,Yuqing Rang,Guangli Liu,Xinxing Xu,Yayun Ma,Jingjing Tang,Xiangyang Zhou,Juan Yang
With the explosive growth in demand for lithium-ion batteries (LIBs), the recycling of the valuable metal components in them has become particularly important. However, in the previous recycling of spent LIBs, lithium is easily lost resulting in wasted resources. In this paper, a new simple and efficient selective lithium extraction strategy is developed, which uses a thiourea-assisted subcritical water system to achieve preferential extraction of lithium from spent LIBs. Due to the enhancement of the lithium extraction process by subcritical water and the synergistic effect of S and N in thiourea on the spent LiNi x Co y Mn z O 2 (NCM) cathode powder, 99.9% of lithium is selectively leached into water. Meanwhile, the transition metals (Ni, Co and Mn) in the leaching residue can be leached out by dilute acid, and the corresponding leaching rates are 99.8%, 99.7%, and 99.9%, respectively. In addition, LiNi 0.5 Co 0.2 Mn 0.3 O 2 (NCM523) cathode material with good electrochemical performance is successfully regenerated. The process has been economically and environmentally assessed as greatly simplifying the recycling process and establishing a highly efficient recycling route for spent LIBs with low environmental impact.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Caiyi Jiang,Peng Tang,Xiaolin Shi,Li Yang,Xingyong Liu,Bo Xing,Guo Yang,Yang Luo,Dongzheng Wang,Xiaoyu Zhao
Due to high efficiency and durability, Polyvinylidene Fluoride (PVDF) membranes are promising for their application in wastewater purification. However, they still inevitably face the challenge of membrane clogging problem, restricting separation and anti-fouling performance. Herein, a novel N-MnO x @PVDF membrane with high catalytic ozonation ability was synthesized using the blending non-solvent-induced reverse transfer method, evidenced by X-ray diffraction, Fourier transform infrared spectrometer, and X-ray photoelectron spectroscopy. Compared with pristine PVDF, N-MnO x @PVDF has better hydrophilicity and reasonable pore structure, resulting in higher permeability and anti-fouling properties. After in-situ catalytic ozonation cleaning, the Flux Recovery Ratio ( FRR ) increases from 72.1% to 99.8%, and the irreversible pollution rate ( R ir ) decreases from 31.9% to 0.13%. Meanwhile, the high stability and reusability can be demonstrated from high Total Organic Carbon (TOC) removal efficiency of humic acid (HA, 93%), high FRR (94%), and low R ir (4.3%) after consecutive cycles filtration experiments. In addition, further mechanistic insights are verified by 3D-excitation Emission Matrices (EEM) and Electron Paramagnetic Resonance (EPR) characterization, demonstrating that the removal of irreversible contaminants can be mainly ascribed to indirect oxidation of 1 O 2 , and their possible generation pathway is also proposed. This study provides valuable insights into the development of advanced antifouling membranes.
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MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Xinmei Qian,Chunxiang Li,Mingyu Zheng,Jinglun Wang,Haowen Huang,Keqin Deng
In this work, a regenerable magnetic omeprazole electrochemical sensor was developed for the first time. Firstly, a magnetic bamboo-like nitrogen-carbon (N-C) nanotubes encapsulated with iron-nickel alloy (FeNi) nanoparticles (FeNi@N-CNTs) was prepared by a pyrolysis route. The characterization techniques including high resolution transmission electron microscopy (HRTEM), scanning electron microscope (SEM), X-ray diffraction (XRD), energy disperse spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) revealed the surface morphology, structure, and chemical composition of the FeNi@N-CNTs. Cyclic voltammograms (CVs) and electrochemical impedance spectroscopy (EIS) results indicated that FeNi@N-CNTs had excellent conductivity and greatly facilitated the electron transfer. By applying FeNi@N-CNTs, a designed magnetic base support, and screen-printed electrode (SPE), a regenerable magnetic SPE was developed. The presence of FeNi@N-CNTs caused better omeprazole electron transfer kinetics at SPE surface. The FeNi@N-CNTs/SPE showed a linear detection range of 0.05–25.0 μM with a detection limit of 14 nM (S/N = 3) for detecting omeprazole. Due to the FeNi@N-CNTs adhering to SPE surface by magnetic control and easy disengagement from the electrode surface by magnetism, the proposed sensor was simple, regenerable, and cost-effective.
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JOURNAL OF FOOD SCIENCE
·
2025
·Vol. 90
·期 1
·e70010
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IF 3.4
Wanyi Zhang,Qiuqi Peng,Linhan Yuan,Caiwen Wu,Mengqi Wang,Hongbo Li,Hongjuan Li,Jinghua Yu
Infant formulas are constantly being updated and upgraded, and N-glycans are functional glycans that have not been fully exploited to date. Commercial whey protein materials are often used as basic ingredients in infant formulas. Therefore, it is important to study N-glycans in commercial whey protein materials. We used matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS) and ion chromatography to analyze N-glycans in bovine lactoferrin (Lf), whey protein isolate (WPI), whey protein concentrate 70 (WPC 70), goat whey protein powder 50, demineralized whey powder 90 (D90), and desalted goat whey powder. The results showed that 30, 6, 28, 16, 8, and 9 N-glycans were found in Lf, D90, desalted goat whey powder, WPI, WPC 70, and goat whey protein powder 50, respectively. A total of four structures of N-glycans were detected in this study. Only bovine Lf and WPC 70 contained fucosylated and sialylated binding (SFN-type) glycan structures. Regarding content, WPC 70 showed the highest yield of 14.5 mg/g, and the degree of sialylation was higher than fucosylation. This study provides a potential basis for the future use of commercial whey protein materials in dairy products such as infant formula.
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Li-Yao Zhang,Wan-Meng Song,Ping Li,Yun Liu
A phosphorus‑nitrogen synergistic flame retardant (named POI) was obtained by the chemical reaction between phenylphosphonic acid (PPOA) and polyethyleneimine (PEI), and used to give the flame retardancy of PTCO. The effects of PPOA and POI on various properties of PTCO were investigated. PPOA obviously improved the flame retardancy of PTCO/PPOA, while the breaking force of PTCO/PPOA was greatly reduced. However, the introduction of PEI made the surface of fabrics smoother. PTCO/POI had better flame retardancy than PTCO/PPOA did, and the limiting oxygen index value of PTCO/POI reached to 29.8 %. POI had a good effect on reducing the R max of both cotton and polyester components. The phosphoric acid groups in POI can promote the dehydration and carbonization reactions of PTCO, which protects the inner fabrics, and POI can release incombustible gases such as NH 3 and N 2 during burning, which can dilute the oxygen concentration. The flame-retardant mechanism of PTCO/POI was mainly the condensed phase. At the same time, there were no changes in whiteness and mechanical properties compared with those of PTCO, and it also had antibacterial property . This work provides a simple and effective method to prepare flame-retardant and antibacterial PTCO.
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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 30
·期 12
·1909972
·
IF 16.836
Yu Han,Huan Zhao,Chenyang Duan,Shaomin Yang,Zhou Yang,Zhike Liu,Shengzhong (Frank) Liu
Cesium-based inorganic perovskites, such as CsPbI 2 Br, are promising candidates for photovoltaic applications owing to their exceptional optoelectronic properties and outstanding thermal stability. However, the power conversion efficiency of CsPbI 2 Br perovskite solar cells (PSCs) is still lower than those of hybrid PSCs and inorganic CsPbI 3 PSCs. In this work, passivation and n-type doping by adding CaCl 2 to CsPbI 2 Br is demonstrated. The crystallinity of the CsPbI 2 Br perovskite film is enhanced, and the trap density is suppressed after adding CaCl 2 . In addition, the Fermi level of the CsPbI 2 Br is changed by the added CaCl 2 to show heavy n-type doping. As a result, the optimized CsPbI 2 Br PSC shows a highest open circuit voltage of 1.32 V and a record efficiency of 16.79%. Meanwhile, high air stability is demonstrated for a CsPbI 2 Br PSC with 90% of the initial efficiency remaining after more than 1000 h aging in air.
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Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Shuilian Cheng,Zhan Cen,Chengyang Tang,Li Xu,Zuofang Yao,Xiaosong Zhou,Qingyou Liu,Shengsen Zhang
Sulfamethoxazole (SMX), as a typical and widely-used antibiotic, its residue in the water environment poses a serious threat to human health and ecological balance. Herein, an environmentally friendly and cost-effective melamine sponge (MS) was utilized as a carrier for the preparation of three-dimensional (3D) porous cobalt and nitrogen co-doped carbon catalysts (Co-N/C) via an impregnation-pyrolysis method. This approach successfully yielded an easily recoverable Co-N/C@MS catalyst. By utilizing this catalyst to activate peroxymonosulfate (PMS), efficient degradation and purification of wastewater containing SMX were achieved. The experimental results showed that the Co-N/C@MS/PMS system achieved 98.39 % degradation efficiency, attributed to the sponge substrate's high pore structure allowing uniform catalyst dispersion. After four cycles, the system remained stable, addressing traditional powder catalysts' recovery and loss issues. Mechanistic studies revealed that C O, pyrrolic N, and Co 2 + are the primary active sites in Co-N/C@MS for PMS activation. Both radical (primarily SO 4 ·- ) and non-radical (mainly 1 O 2 ) pathways contribute to SMX degradation, with the latter pathways playing a dominant role. The optimal design and performance evaluation conducted in this study offer a novel perspective on the application of recyclable flake catalyst materials for persulfate purification of organic wastewater.
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高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Zhirou Xu,Zhengtong Wu,Xuyang Sun
An ultrasensitive fluorescence immunosensor based on silver nanoparticles@ nitrogen-doped carbon quantum dots (Ag NPs@N/CQDs) and exploiting the quenching effect of gold nanoparticles (Au NPs) was fabricated for squamous cell carcinoma antigen (SCCA) detection. Ag NPs@N/CQDs were immobilized on the surface of an indium tin oxide (ITO) electrode and then coupled with the primary antibody of SCCA. The primary antibody captured SCCA on the ITO electrode, forming an immune complex with the secondary antibody labeled with gold nanoparticles, thereby constructing a sandwich-structured fluorescent sensor. Using the prepared sensor, a new method for detecting trace amounts of SCCA in human serum was established. Owing to the effective quenching of fluorescence intensity of Ag NPs@N/CQDs by Au NPs, combined with the presence of a sandwich immune structure, the sensor exhibits high sensitivity and selectivity. The method demonstrates a linear range of 2 − 4000 fg mL −1 and a detection limit of 0.87 fg mL −1 . The the recovery rate for real serum samples was between 94.45 % to 103.43 %.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Zhuoyu Han,Yitong Lu,Yuliang Li
Lignin has limited potential for transformation into high-value-added chemicals due to the non-polar nature and high bond dissociation energy of its intramolecular C-C bonds. Herein, we synthesized an N-doped Nb 2 O 5 photocatalyst with rod-shaped structure through hydrothermal method followed by calcination for C-C bonds cleavage of β-O-4 type lignin model compound under simulated sunlight. The comprehensive characterization results demonstrated that N doping and the resultant oxygen vacancies significantly enhance visible light response intensity of Nb 2 O 5 , while also altering the valence band and conduction band position. The enhanced reducibility at high conduction band position facilitated the rapid reduction of O 2 to generate superoxide radicals, accelerating the separation of carriers. The N-doped Nb 2 O 5 catalyst achieved 90% lignin conversion, surpassing pristine Nb 2 O 5 (59%), with stable performance over 5 consecutive cycles. This work provides a reference for developing efficient C-C bond selective cleavage photocatalysts through doping strategies.
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高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Qing Cheng,Yuqi Zhang,Yingying Cao,Peihao Dou,Long Liu,Yanqiang Zhang
Ionic liquid-H2O2 is a green hypergolic propellant system, and the poor self-ignition hinders its application. Herein, the stable zero-valent catalyst Cu nano-particle with twin boundaries (T-Cu) was synthesized. As the twin boundary regulates the electron micro-environment of the T-Cu surface, the electron transfer from the d electrons of Cu atom to the σ* anti-bonding orbital of H2O2 is intensified to create ·OH and ·OOH. The resulted free radicals possess strong oxidizing ability, and react violently with [BMIM]N(CN)2 to achieve a rapid ignition with the delay time as low as 25 ms. This work provides an effective way to get excellent ignition performance, and promotes the application of Ionic liquid-H2O2 green hypergolic propellants.
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高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Zhongsheng Liu,Taixing Zhang,Hejing Wen,Pengfei Hu,Lei Chen,Jia Qiao,Jianchun Wu,Jianhong Yang
Aluminum-ion batteries (AIBs) have garnered significant attention due to their high theoretical capacity, low cost, and high safety. However, finding suitable cathode materials is a challenge due to the complex energy storage mechanism of multivalent ions, which severely limits the practical applications of AIBs. Polyaniline (PANI) is widely used in rechargeable batteries, but its polymerization reaction causes several problems that limit its use in AIBs. To address the issue, PANI material coordinated with Ni 2+ (Ni-PANI) is synthesized by introducing NiCl 2 ·6H 2 O with chemical oxidation, compared with PANI as the cathode materials for AIBs. A better electrochemical performance with Ni-PANI cathode is displayed at a voltage range of 0.1–2.2 V in comparison with PANI. Furthermore, the effects of introducing Ni 2+ are investigated on the reaction mechanism through ex-situ characterization. The coordination of Ni element with N in PANI increases the interaction between the molecular chains of polyaniline, and improves the mechanical strength, thus affecting its cycling stability. At the same time, the conversion between different N structures increases and improves the adsorption of AlCl 2 + , presenting high electrochemical performance of AIBs. A new strategy is presented for the development of organic polymer cathode materials for AIBs.
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Small
·
2025
·
IF 12.1
Bingqian Zhou,Yihao Fan,Chenyang Kou,Lei Zhang,Dezhong Yin,Baoliang Zhang
Poly-imidazolium salt (PIS) combines the merits of abundant nitrogen sources, excellent chemical and thermal stability and adjustable morphology, making it a promising precursor for Nitrogen-doped (N-doped) carbon material. Herein, multidimensional PIS are synthesized via a facile solvent-induced strategy. Then, PIS are converted into nanofibers, nanoribbons and microspheres composed of N-doped carbon. The effects of microstructure, N-doping degree and defects on microwave absorption properties are investigated in depth. As a result, the 2D nanoribbon CN-2-700 features a high specific surface area, significant N-doping and moderate conductivity, thereby allowing it to sustain perfect conductive networks and the optimal impedance matching at a low filler content (8 wt.%). CN-2-700 demonstrates a minimum reflection loss (RL min ) of −50.15 dB and an effective absorption bandwidth (EAB) of 7.06 GHz (10.44–17.50 GHz). Overall, this work offers a novel path for developing multi-dimensional electromagnetic microwave absorbing materials with a simple process and remarkable performance.
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PubMed
高影响因子
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