ACS Sustainable Chemistry & Engineering
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2025
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IF 7.3
Mingqiang Cheng,Juanjian Ru,Qibo Zhang,Yixin Hua,Cunying Xu,Yinghua Zhang,Ding Wang
The boom of the lithium-ion battery (LIB) industry is dialectically correlated with a scarcity of raw resources, particularly lithium (Li), so the recovery of critical metals from spent LIBs has become very essential for resource sustainability. Here, a new strategy for the one-step direct recovery of Li from spent LIB cathode active materials via water-based deep eutectic solvents (DESs) is put forward, together with the recycling and reuse of the DES. Without any reagent and pretreatment, Li2C2O4 can be directly and preferentially precipitated from the H2O-based choline chloride-oxalic acid (ChCl-OA) DES, and CoC2O4·2H2O is obtained easily from the residual Co-rich leachate by adding H2O. The leaching efficiencies are nearly 100% for Li and Co, and the recovery efficiencies reach 91.2 and 94.6%, respectively. The recovery mechanism of Li and Co is clarified based on the coordination-guided design between Li+ and C2O42–, which enables the precise separation of Li and Co. It is crucial to strictly control the H2O content in the DES, which is always being ignored, serving as a diluent and complexant, avoiding the solidification of the DES, and realizing the preferential precipitation of Li. The optimization of the leaching and recovery processes is comprehensively investigated as well as the middle-sized experiments in the 2 L leaching level, and a leaching kinetic model is established. The strategy proposed here offers a promising possibility for the direct and preferential recovery of Li from spent LIBs, promoting the development of high economic efficiency and environmental protection of the battery recycling market.
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LWT-FOOD SCIENCE AND TECHNOLOGY
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2025
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IF 6.6
Zuguo Song,Siyu Yao,Chengchun Wu,Jianli Yang,Jinge Shi,Wen Cao,Guangle Pan,Chen Hu,Yanran Wang,Lijuan Chen
This study aimed to investigate the synergistic effect of photothermal films comprising carbon nanoparticles (CNPs) and cellulose nanocrystals (CNCs) in extending the shelf life of kiwifruit. Herein, a novel nanocomposite was synthesized via photothermal synergism by introducing CNPs into CNCs using ultrasonic assembly methods and the resulting composition was mixed with a polyvinyl alcohol (PVA) matrix to develop PVA based films. Results showed that the optimal ratio of CNPs to CNCs was 1:4 for the CNP/CNC composites. The CNPs/CNCs composites mainly bonded through hydrogen bonds and exhibited favorable thermal stability. The mechanical strength of the PVA based films added with 0.2% CNP/CNC composites improved by 79% compared with that of pure PVA films. Water vapor permeability of PVA-based films added with 0.2% CNP/CNC composites reduced by 8%, consistent with the water contact angle results. Notably, the addition of CNPs/CNCs composites to PVA films achieved superior photothermal effects, with the temperature increasing to 76.2°C during 1 min of irradiation, which is 48% higher than that of pure PVA films. Moreover, the addition of CNPs/CNCs composite to PVA films effectively reduced the weight loss and maintained the hardness, pH, and total soluble solid content of kiwifruit during storage. The addition of the CNPs/CNCs composite also delayed the decay time of kiwifruit by 3 days, presenting a novel approach for fruit preservation.
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Polymers
·
2024
·Vol. 16
·期 3
·315
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IF 4.7
Lili Chen,Yincai Wu,Yuntian Guo,Xiaofeng Yan,Wenliang Liu,Si Huang
The packaging problem with petroleum-based synthetic polymers prompts the development of edible packaging films. The high value-added reuse of navel orange peel pomace, which is rich in bioactive compounds, merited more considerations. Herein, nanocellulose (ONCC) and soluble dietary fiber (OSDF) from navel orange peel pomace are firstly used to prepare dietary fiber-based edible packaging films using a simple physical blend method, and the impact of ONCC on the film’s properties is analyzed. Adopting three methods in a step-by-step approach to find the best formula for edible packaging films. The results show that dietary-fiber-based edible packaging films with 4 wt.% ONCC form a network structure, and their crystallinity, maximum pyrolysis temperature, and melting temperature are improved. What’s more, dietary-fiber-based edible packaging films have a wide range of potential uses in edible packaging.
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高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Zhen Wu,Tao Wang,Zihe Zhao,Yifan Ji,Hongli Bai,Yetao Jiang,Xiaoyu Wang,Haq Nawaz,Aiyong He,Jun Xia,Jiaxing Xu,Sheng Chen,Lei Hu
Pretreatment is the key step to convert lignocelluloses to sustainable biofuels, biochemicals or biomaterials. In this study, a green pretreatment method based on choline chloride-lactic acid deep eutectic solvent (ChCl-LA) and niobium-based single-atom catalyst (Nb/CN) was developed for the fractionation of corn straw and further enzymatic hydrolysis of cellulose. With this strategy, significant lignin removal of 96.5 % could be achieved when corn straw was pretreated by ChCl-LA (1:2) DES over Nb/CN under 120 °C for 6 h. Enzymatic hydrolysis of the cellulose-enriched fraction (CEF) presented high glucose yield of 92.7 % and xylose yield of 67.5 %. In-depth investigations verified that the high yields of fractions and monosaccharides was attributed to the preliminary fractionation by DES and the deep fractionation by Nb/CN. Significantly, compared to other reported soluble catalysts, the synthesized single-atom catalyst displayed excellent reusability by simple filtration and enzymatic hydrolysis. The recyclability experiments showed that the combination of ChCl-LA DES and Nb/CN could be repeated at least three times for corn straw fractionation, moreover, the combination displayed remarkable feedstock adaptability.
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Journal of Materials Chemistry A
·
2024
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IF 10.7
Junyang Ding,Zimo Peng,Zhiwei Wang,Chunhui Zeng,Yanhong Feng,Miaosen Yang,Guagnzhi Hu,Jun Luo,Xijun Liu
Although it is more cost-effective, producing hydrogen through acidic seawater splitting systems is still difficult, especially when it comes to creating highly effective, highly resistant chlorine corrosion bifunctional catalysts for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER). Herein, under the addition of phosphotungstic acid and the etching effect of oxalic acid, we develop bifunctional P/W dual-doped RuOx nanocrystals for acidic overall seawater splitting, showing overpotentials of 45 and 158 mV for the HER and OER at 10 mA cm−2, respectively, and accompanied by a strong corrosion resistance towards seawater. Accordingly, the two-electrode system requires only 1.47 V to reach a current density of 10 mA cm−2 and maintains a high stability over 50 h. The P/W dual doping modulates the electrical environment of Ru sites, and the addition of oxalic acid encourages the exposure of more active sites, both of which contribute to the enhancement of seawater electrolysis. Theoretical calculations further manifest that the energy barriers of the HER and OER can be lowered by the dual-doping. Moreover, we found a positive influence of Cl− on the catalytic activity of acidic seawater splitting. Our work offers a promising strategy to significantly increase the catalytic efficiency of Ru-based catalysts for the generation of green hydrogen from acidic seawater in a sustainable manner.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2024
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IF 3.8
Chi Sun,Yudong Xia,Xue Ye,Wenlin Xu,Hui Shi,Xinhua Gao,Jinghao Yu,Lisheng Guo,Jie Li
The direct dimethyl ether (DME) synthesis reaction via CO2 hydrogenation typically requires a bifunctional catalyst that effectively combines a methanol synthesis catalyst with a methanol dehydration catalyst, but the effect of the relationship between the two catalysts on the catalytic performance has not been as well studied. In this study, we developed a CuZnZr/Al–S(10)-PG bifunctional catalyst physically mixed with Al-modified SBA-15 and the traditional CuZnZr catalyst for the hydrogenation of CO2 to DME. A pivotal discovery is that the modulation of interaction intensity between these two constituents significantly influences the electronic configuration of each component. Through X-ray photoelectron spectroscopy characterization and methanol dehydration experiments, it was confirmed that diminishing the synergistic interplay between CuZnZr and Al-modified SBA-15, which regulated the electronic structure of the Cu–Zn interface and enhanced the Cu–Zn interfacial interaction, played a crucial role in enhancing the catalyst’s performance in CO2 hydrogenation to DME. This finding contests established beliefs about the necessity of strong synergistic interactions in such systems and provides new insights for designing rational bifunctional catalysts.
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APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2024
·Vol. 130
·期 7
·1-10
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IF 2.5
Chen Wanhao,Shen Xiaowei,Huan Yunfei,Yan Chenglin,Qian Tao,Liu Xuejun
The potential application of anode-less sodium metal batteries (ALSBs) is severely affected by the irreversible depletion of sodium ions. Cathode sodium compensation (SC) additive is an effective way for sodium supplement due to its simplicity and flexibility. However, developing SC additives with no toxicity, low cost, low sensitivity to air and humidity is still a huge challenge. In this work, we propose a low-cost, environmentally friendly and air-stable organic sodium salt as sodium reservoir to compensate sodium ion, thus improving the cycle stability of ALSBs. The capacity of ALSBs with N: P as low as 0.5:1 could maintain capacity retention of 91.3% after 100 cycles with this SC additive, while the cell without this SC additive would decline to almost zero after 10 cycles. The inexpensive price and ease of preparation also make it suitable for industrialization. This work provides a realistic SC approach for improving the cycling stability for ALSBs.
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JOURNAL OF POWER SOURCES
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2024
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IF 8.1
Chenxu Wang,LuLu Ren,Chunhua Ying,Jing Shang,John McCloy,Jin Liu,Wei-Hong Zhong
A high-performance solid electrolyte is critical for all-solid-state Li metal batteries which possess good safety and high energy densities. In this study, inspired by the unique ionic transport function and excellent adhesive properties of natural proteins, we successfully generated a novel solid electrolyte by applying soy protein as a dual-functional bridge to enable additional ion-conduction pathways and improve mechanical performance. The solid electrolyte with soy protein that interacts with both SiO 2 nanofabrics and polypolyethylene oxide (PEO) exhibits high ionic conductivity of 10 −5 S cm −1 (vs. 10 −6 S cm −1 of SiO 2 /PEO), improved Li + transference number of 0.550 (vs. 0.446 of SiO 2 /PEO), high Young's modulus of 1.862 MPa (vs. 0.356 MPa of SiO 2 /PEO) and excellent flexibility. As a result, the solid-state batteries with LiFePO 4 as cathode demonstrate a stable discharge capacity. This work provides a new strategy to advance the performance of solid electrolytes for achieving long-lifespan all-solid-state batteries.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Jing Zhang,Dumeijin Gong,Zian Cheng,Chao Shan
The peroxone (O 3 /H 2 O 2 ) process has long suffered from inefficient performance for water decontamination at acidic pHs. Herein, we find the evident capability of trace Ce(III) to boost the acidic peroxone process. In contrast to the negligible degradation (∼6% in 60 min) of oxalic acid (OA) as a recalcitrant compound in the O 3 /H 2 O 2 system, efficient removal of OA (∼95 %) was achieved by introducing trace Ce(III) (0.30 µM). OA was identified as an effective ligand activating Ce(III) by forming the Ce(III)-OA complex, which served as the catalytic active component to accelerate the decomposition of O 3 and H 2 O 2 to produce •OH and promote the co-degradation of refractory pollutant atrazine and ibuprofen. The remarkable catalytic activity of trace Ce(III) for peroxone reaction resulted from the efficient interconversion of Ce(III/IV) relying on both the favorable electron transfer from the ternary Ce(III)-OA-hydroperoxo complex to O 3 and the rapid reduction of Ce(IV) back to Ce(III) mainly by H 2 O 2 . Furthermore, the catalytic performance of Ce(III) for peroxone process outperformed Fe(II), Cu(II), and Co(II). This study puts forward an effective method to extrapolate the applicability of the peroxone (O 3 /H 2 O 2 ) process to the acidic range and enlightens the development of Ce-catalyzed peroxone processes.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Zhaofen Xu,Lingfang Tang,Yuanyi Zhou,Gang Lu,Haojie Dong,Mingshan Zhu
Utilizing the immanent salt (Cl – ) in wastewater to generate reactive chlorine species (RCS) satisfies the future needs for sustainable, on-demand, and decentralized ammonia nitrogen (NH 4 + -N) removal. The microstructural evolution of bismuth oxychloride (BiOCl) photocatalyst under irradiation benefits for overcoming the competition between Cl – and H 2 O oxidation and achieving high N 2 selectivity. Herein, internal electric field (IEF) engineering by carbon doping is applied to promote photocatalytic RCS generation rate over BiOCl. The carbon dopant not only enhances the IEF intensity of BiOCl by a factor of 2.1 times for carrier dynamics promotion, but also improves Cl – oxidation against H 2 O oxidation. An RCS production rate of 0.23 mg/L min −1 is realized over carbon-doped BiOCl (C-BiOCl) through the accelerated interaction between lattice and environmental Cl – , which is twice that of the undoped BiOCl (0.11 mg/L min −1 ). The relation between IEF intensity and RCS generation rate over C-BiOCl manifests a correlation coefficient of 0.96. Effective NH 4 + -N degradation with N 2 selectivity of >99% is validated. The system is competent in dealing with saline NH 4 + -N wastewater with a wide range of NH 4 + -N (20∼200 mg N/L) and NaCl (6∼10 g/L) concentrations. In the treatment of realistic landfill leachate (884 mg N/L NH 4 + -N), C-BiOCl displays a photocatalytic NH 4 + -N removal efficiency of up to 95.6% while maintaining the NO 2 − -N (∼2 mg N/L) and NO 3 − -N (∼40 mg N/L) levels. This system provided an interesting and innovative idea for wastewater self-purification.
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ACS Nano
·
2025
·
IF 16
Zhaoxi Chen,Gaige Zhang,Huayue Yang,Yun Zhao,An Pei,Peng Wang,Jin Yang,Junxi Zhang,Peilin Sun,Haohang Qin,Junzheng Zhan,Jian Peng,Wei-Hsiang Huang,Linan Zhou,Guangxu Chen
The electrochemical upcycling of polyethylene terephthalate (PET) into high-value products is essential for tackling “white pollution” and enhancing environmental protection. However, significant challenges remain, including the need for low-cost, highly efficient electrocatalysts, and the expensive electrolyte recovery in alkaline systems. This study presents a simple doping method to produce Ni octahedral-doped Co3O4 electrocatalysts (NiCo2O4) from spent LiCoO2 (SLCO), enabling sustainable PET upcycling to formic acid (FA) under economic conditions. The NiCo2O4 catalyst exhibits outstanding electrocatalytic activity for the ethylene glycol oxidation reaction (EGOR), achieving a Faradaic efficiency of 90.5% for FA at a potential of 1.50 V versus RHE. When integrated into an anion-exchange membrane (AEM) reactor, the system displayed an average current density of 173.5 mA/cm2 and a Faradaic efficiency of 84.7% at a cell voltage of 1.70 V. Systematic characterizations and DFT calculations indicate that Ni doping alters the spin-state electron density of Co, increases the localized electrons around Co sites, and significantly reduces the charge transfer resistance (Rct from 44.10 Ω to 10.23 Ω) of EGOR. Moreover, the Co–Ni dual sites enhance EG adsorption compared to individual Co or Ni sites. Finally, along with our electrochemical recovery and separation system (ERSS), a KOH recovery rate of 98.9% is achieved, yielding a return of $440.50 per ton of recycled PET─approximately a 4-fold profit increase compared to the traditional acid–base neutralization process (ABNP). This work describes a closed-loop model that simultaneously addresses battery recycling, plastic pollution reduction, and eco-friendly chemical production.
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CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xin Wang,Boxuan Yao,Wenjing Song,Junnan Zhang,Mingyang Zhou,Wei Hu,Lei Zhao,Jian Liu,Shenghong Yang
The flexible regulation of carbon dots (CDs) emission wavelengths through controlling single variable remains a significant challenge. In this study, we present a novel single-factor tuning preparation strategy for synthesizing full-color fluorescent CDs in an open, rapid and solvent-free reaction system. Tunable purple-to-red emission CDs were prepared within 5 min solely by adjusting o -phenylenediamine/dicarboxylic acid mass ratios. The production yields and quantum yield of CDs can reach up to 70.5 % and 34.1 %, respectively. Changing the reactants ratio affects the dehydration and carbonization. This led to an orderly red-shift in CDs emission wavelength. Detailed characterizations and theoretical calculations reveal key insight. The transformation in optical features correlates with a gradient increase in particle size. It also correlates with an increase in graphitic nitrogen and sp 2 -conjugated domains. These CDs exhibit excellent biocompatibility and stable fluorescence characteristics, making them successful for bioimaging applications in live cells and zebrafish embryos. Furthermore, leveraging the simplicity and solvent-free nature of the synthesis, full-color and high color rendering index (CRI > 83) white light LEDs with tunable color temperature were successfully fabricated, demonstrating substantial application potential for commercial lighting. The proposed single-factor solvent-free synthesis strategy may further improve the industrialization potential of CDs-based optical materials.
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