PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
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2024
·Vol. 121
·期 43
·e2414741121
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IF 9.4
Xiaosong Gu,Xuezhen Feng,Songhe Yang,Ranhao Wang,Qiang Zeng,Yangzi Shangguan,Jiaxin Liang,Huiling Zhou,Zhiwei Li,Zhang Lin,Chunmiao Zheng,Zhenghe Xu,Hong Chen
The insatiable demand for lithium in portable energy storage necessitates a sustainable and low-carbon approach to its recovery. Conventional hydrometallurgical and pyrometallurgical methods heavily involve hazardous chemicals and significant CO2 emissions. Herein, by integrating electrode oxidation with electrolyte oxidation, we establish a photovoltaic-driven “dual-oxidation” seawater electrolyzer system for low-carbon footprint and high lithium recovery. A 98.96% lithium leaching rate with 99.60% product purity was demonstrated for lithium recovery from spent LiFePO4 cathode materials. In-depth mechanism studies reveal that the electric field-driven electrode oxidation and in situ generated oxidative electrolyte synergetically contributes to lithium ions leaching via a structural framework elements oxidation and particle corrosion splitting synergy. This dual-oxidation mechanism facilitates rapid and efficient lithium extraction with broad universality, offering significant economic and environmental benefits. Our work showcases a promising strategy for integrating dual oxidation within a photovoltaic-driven seawater electrolyzer, paving the way for low-carbon lithium recovery from diverse solid wastes and minerals within a sustainable circular economy.
研究领域:
材料科学
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环境科学
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
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2023
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IF 9.8
Bin Chen,Jiang Xu,Huijie Lu,Lizhong Zhu
Chemical oxidation is a promising technology for the remediation of organics-contaminated soils. However, residual oxidants and transformation products have adverse effects on microbial activities . This work aimed at moderate chemical oxidation coupled with microbial degradation (MOMD) for the removal of benzo[ a ]pyrene (BaP) by optimizing the type and dosage of oxidants. Potassium permanganate (KMnO 4 ), Fe 2+ + sodium persulfate (Fe 2+ + PS), Fenton's reagent (Fe 2+ + H 2 O 2 ), and hydrogen peroxide (H 2 O 2 ) were compared for BaP removal from loam clay and sandy soils. Overall, the removal efficiency of BaP by a moderate dose of oxidant coupled indigenous microorganism was slightly lower than that by a high dose of relevant oxidant. The contributions of microbial degradation to the total removal of BaP varied for different oxidants and soils. The removal efficiency of BaP from loam clay sandy soil by a moderate dose of KMnO 4 (25 mmol/L) was 94.3 ± 1.1 % and 92.5 ± 1.8 %, respectively, which were both relatively higher than those under other conditions. The indirect carbon footprint yielded by the moderate dose of oxidants was 39.2–72.8 % less than that by the complete oxidation. A moderate dose of oxidants also reduced disturbances to soil pH and OC . The microbial communities after MOMD treatment were dominated by Burkholderiaceae , Enterobacteriaceae , Alicyclobacillaceae , and Oxalobacteraceae . These dominant microorganisms promoted the removal of BaP through the expression of polycyclic aromatic hydrocarbon-ring hydroxylated dioxygenase gene. Compared with complete chemical oxidation, MOMD is also a promising technique with the utilization of indigenous microorganism for remediating BaP-contaminated soils.
研究领域:
环境科学
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微生物学
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产品关联
DOI
PubMed
高影响因子
ADVANCED MATERIALS
·
2024
·
IF 27.4
Hongliang Li,Jingyang Wang,Sheng Xu,Aoyuan Chen,Hangyu Lu,Yan Jin,Shaohua Guo,Jia Zhu
Na-ion batteries (NIBs) are sustainable alternatives to Li-ion technologies due to the abundant and widely-distributed resources. However, the most promising cathode materials of NIBs so far, O3 layered oxides, suffer from serious air instability issues, which significantly increases the manufactural cost and carbon footprint because of the long-term use of dry rooms. While some feasible strategies are proposed via case studies, universal design strategies for air-stable cathodes are yet to be established. Herein, the air degradation mechanisms of O3 cathodes are investigated via combined first-principles and experimental approaches, with bond dissociation energy proposed as an effective descriptor for predicting air stability. Experimental validations in various unary, binary, and ternary O3 cathodes confirm that the air stability can indeed be effectively improved via simple compositional design. Guided by the predictive model, the designed material can sustain 30-day air-storage without structural or electrochemical degradation. It is calculated that such air-stable cathodes can significantly reduce both energy consumption (≈4 100 000 kWh) and carbon footprint (≈2200-ton CO 2 ) annually for a 2 GWh NIBs manufactory. Therefore, the fundamental understandings and universal design strategy presented open an avenue for rational materials design of NIBs toward both elemental and manufactural sustainability.
研究领域:
材料科学
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能源存储
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可持续技术
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电化学
✓ 已验证
DOI
高影响因子
CANADIAN METALLURGICAL QUARTERLY
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2025
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IF 1.5
Huihui Qiao,Jiayu Fang,Xuexiang Wang,Chenlong Wei
Given the scarcity of rhenium resources, recovering rhenium from waste materials represents a strategically viable solution. This review focuses on three novel aspects in the field of rhenium recovery. It integrates pyrometallurgical (KOH-K₂CO₃ molten salt), hydrometallurgical (solvent extraction/ion exchange), and electrochemical (NaOH electrolysis) methods into a unified ‘temperature-medium-electrochemical potential’ framework, proposing oxidative volatilisation with three-zone tube furnace fractionation for W-Mo-Re alloys. The study evaluates AI sorting, task-specific ionic liquids, and microwave-synthesised nano-resins, demonstrating their capacity to boost recovery rates from 40% to 92% for low-grade rhenium (<2 ppm). Additionally, it quantifies carbon footprint reductions through secondary resource recovery, establishing a circularity-clean energy correlation model that redefines strategic metal management. Case studies on Pt-Re catalyst regeneration and aerospace alloy recycling validate co-extraction solutions for multicomponent systems.
研究领域:
冶金工程
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环境科学与工程
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材料循环利用
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清洁能源技术
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战略金属管理
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2022
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IF 9.224
Xueye Wang,Hongyi Han,Huimin Zhou,Tianlin Wang,Ruobin Dai,Zhiwei Wang
Membrane separation is widely adopted in many industries, and the membranes reach their end of life (EOL) after long-term use. However, the conventional approach of replacing EOL membranes has a high carbon footprint, hindering the development of a green, low-carbon, and carbon-neutral process. In this study, we developed a cleaning–tannic acid-iron (TA-Fe)-healing–interfacial polymerization strategy with a reaction time of less than 20 min for the upcycling of an EOL microfiltration (MF) membrane. The cleaning step could remove most of the foulants from the EOL membrane. The TA-Fe healing step decreased the surface pore size and increased the hydrophilicity of the cleaned membrane, offering a more favorable platform for the storage of amine monomers required for interfacial polymerization. The upcycled NF-Healed membrane possessed a Na2SO4 rejection of 96.9 ± 0.7% and high pure water permeance of 23.7 ± 1.4 L m–2 h–1 bar–1. An economic analysis indicated that the chemical cost for upcycling was ∼$4.9/m2 membrane, which was lower than the estimated cost to replace the EOL MF membrane. This study provides a rapid and cost-effective method for the upcycling of the EOL MF membrane, which is a promising strategy to close the sustainable loop in the membrane materials.
研究领域:
环境工程
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材料科学
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水处理
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可持续性
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产品关联
DOI
高影响因子
Science China-Materials
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2022
·Vol. 65
·期 9
·2479-2490
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IF 8.64
Sun Shuangjie,Tian Qingli,Mi Hao-Yang,Li Jun,Jing Xin,Guo Zhanhu,Liu Chuntai,Shen Changyu
Solar-driven steam generation is a practical strategy to harness solar energy for desalination and production of clean water with a minimized carbon footprint. However, this strategy suffers from a low evaporation rate under weak illumination on cloudy days or at night. Herein, we present a fabric-based all-weather-available photo-electrothermal steam generator (P/ET-SG) capable of regulating the surface temperature and evaporation rate by the coupling effect of photo-thermal and electro-thermal heating depending on the light conditions. An unprecedented high surface temperature of 52°C in the wet state and an evaporation rate of 2.61 kg m −2 h −1 were achieved by the P/ET-SG under 1 sun with only 1 V input voltage owing to the uniform heat distribution and the coupled electro-thermal source. The oneway fluidic design of the P/ET-SG effectively prevented salt precipitation during continuous desalination in 24 h and was able to remove salt granules from the evaporation surface. Furthermore, the P/ET-SG demonstrated a high evaporation rate of 2.58 kg m −2 h −1 in the purification of concentrated saline water and dye-contaminated water with high efficiency (>99.9%). This study offers new thoughts for the design of all-weather-available solar steam generators with high efficiency and makes a step forward towards fast purification of concentrated saline water and wastewater.
研究领域:
能源
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环境科学
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材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-9
·
IF 16.6
Liu Zhankai,Liu Ziyi,Fan Jie,Lu Wen-Duo,Wu Fan,Gao Bin,Sheng Jian,Qiu Bin,Wang Dongqi,Lu An-Hui
Oxidative dehydrogenation (ODH) of alkane over boron nitride (BN) catalyst exhibits high olefin selectivity as well as a small ecological carbon footprint. Here we report an unusual phenomenon that the in-situ formed olefins under reactions are in turn actively accelerating parent alkane conversion over BN by interacting with hydroperoxyl and alkoxyl radicals and generating reactive species which promote oxidation of alkane and olefin formation, through feeding a mixture of alkane and olefin and DFT calculations. The isotope tracer studies reveal the cleavage of C-C bond in propylene when co-existing with propane, directly evidencing the deep-oxidation of olefins occur in the ODH reaction over BN. Furthermore, enhancing the activation of ethane by the in-situ formed olefins from propane is successfully realized at lower temperature by co-feeding alkane mixture strategy. This work unveils the realistic ODH reaction pathway over BN and provides an insight into efficiently producing olefins.
研究领域:
化学工程
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催化
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）