Journal of Environmental Chemical Engineering
·
2023
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IF 7.7
Wenxia Hou,Yi Li,Shuting Xu,Qian Wang,Kuntong Song,Junhong Liu,Nan Wang,Qing Zhou,Dongxia Yan,Xingmei Lu
The usage of zinc-containing catalysts in glycolysis causes the residue of Zn 2+ in the polyethylene terephthalate (PET) degradation monomer bis-hydroxyethyl (BHET), which limits the high-value utilization of BHET. This work first used electrodeposition combined with one-time recrystallization to purify BHET. Electrodeposition was suitable for dealing the Zn 2+ concentrations of degradation solutions within 50–100 ppm, and decreased the content of Zn 2+ in BHET from 141.30 to 2.41 ppm, which reached the standard of repolymerization into PET bottles. The removal rate of Zn 2+ was 90 % for the degradation solutions, which decreased the concentration of Zn 2+ in wastewater from 100 to 8.97 ppm. Meanwhile, the Zn 2+ removed from the degradation solutions was deposited on cathode, which obtained metal Zn materials and realized the recycling of Zn resources from Zn(OAc) 2 . Therefore, electrodeposition could realize the purification of BHET, recycling of Zn(OAc) 2 , reducing the environmental pollution caused by the emission of Zn 2+ and the protection of human health, simultaneously. Electrodeposition had less water consumption, lower loss rate of BHET (from 60 % to 10 %) and shorter processing time, compared with six-times recrystallizations. This study first proposed the formation of quadridentate between BHET and Zn 2+ , and put forward a new three-steps electrodeposition mechanism of Zn 2+ : the addition of electric field destroyed the dissociation equilibrium of quadridentate and made it shift to release free Zn 2+ ; the free Zn 2+ gathered to form ionic groups and they migrated to copper; Zn 2+ reduced on copper, of which the first step was the speed limited step.
研究领域:
化学工程
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环境科学
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产品关联
DOI
高影响因子
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
·
2017
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IF 1.873
Yuxiu An,Peizhi Yu
In this paper, the inhibition property of polyethyleneimine (PEI) in montmorillonite solution was studied. The inhibition property was evaluated by linear swelling test and rolling recovery test. Compared with other inhibitors, the addition of PEI resulted in the lowest swelling height in drilling fluid. In rolling recovery rate study, the addition of PEI resulted in the highest recovery rate after rolled at 120 °C.More importantly, PEI was environmental friendly inhibitor. The inhibition mechanism was investigated by Fourier transform infrared spectroscopy, X-ray diffraction, Transmission electron microscope, Scanning electron microscopy, Atomic force microscope, Zeta potential and Particle-size analyzer. The spectrums and images showed that the negative charge in the surface of montmorillonite (MMT) was neutralized by the positive charge in amino group of PEI. PEI was adsorbed in the surface and intercalated into interlayer of MMT, which reduced the hydration repulsion of diffuse electric double layer and prevented the invasion of water. Hydrogen bonding between hydroxyl in the surface of clay and amino groups in the backbone and side chain of PEI can be formed in the process. The adsorption and intercalation of PEI in the surface and interlayer of MMT was the major factor to prevent water molecules from invading into the gallery of clay. There were a quantity of positive ions in solution because of the protonation of nitrogen in water. More positive ions resulted in the stronger force between inhibitor and clay.
研究领域:
地质学
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化学工程
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产品关联
DOI
高影响因子
Advanced Science
·
2024
·Vol. 12
·期 8
·2412258
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IF 14.3
Xiaoyu Zhang,Xixian Yan,Fanglei Zeng,Hao Zhang,Peiyao Li,Haiyang Zhang,Ning Li,Qingbao Guan,Zhengwei You
Flammability is a significant challenge in polymer-based electronics. In this regard, triboelectric nanogenerators (TENGs) have enabled a safe means for harvesting mechanical energy for conversion into electrical energy. However, most existing polymers used for TENGs are sourced from petroleum-based raw materials and are highly flammable, which can further accelerate the spread of fire and harm the ecological environment. In addition, the existing intrinsic flame-retardant TENGs are not elastic at room temperature, which may potentially damage the flexible equipment and harm firefighters. This study presents an intrinsic flame-retardant bio-based elastic phytic acid polyurethane (PUPA) synthesized using a simple and efficient one-pot polycondensation. The cross-linked structure and polar phosphorus-containing segments of PUPA are fabricated into PUPA-TENG, demonstrating a superior elasticity (elongation up to 660%), flame retardancy (UL94 V-0), impact resistance (34.71 MJ m −3 ), and dielectric constant ( D k = 9.57). Consequently, this study provides a simple strategy for tailoring TENGs toward environmentally friendly and secure power generators and electronics, which can effectively reduce fire hazards and potentially be applied to other fire-risk fields such as personal protection, firefighting, and new energy.
研究领域:
材料科学
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能源技术
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环境科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
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IF 16.744
Qianhao Pan,Jiaxing Fang,Shiming Zhang,Yonglin He,Yapei Wang
The spruce bark beetle Ips typographus , as the most notorious pest in Eurasia spruce forest ecosystem, mainly feed on phloem of spruce tree trunk. The concealment of their habit makes regulation of insect population a difficulty to cope with, contributing to spruce forest recession, destruction of environment balance and forest transformation from carbon sinks into carbon source. Based on the cross point between the biorhythm of the I. typographus and photothermal material, description herein was a novel sunlight-triggered biorhythm-paralleled photothermal sponge (BPPS) for continuous control of I. typographus . Three steps including preparation of sugar template based porous polyurethane (PU) sponge, polypyrrole (PPy) modification and pheromone filling were involved in material manufacturing. The attractant and repellant agents were employed into the PU separately to realize a comprehensive regulation on I. typographus behavior. Laboratory simulation and forest field experiments illustrated that both the rapid release within a short period and long-term effectiveness in 21 days were verified. Due to the advantages of designability, cost-effectiveness and environmental friendliness of our sustained-release sponge, this manufacturing strategy offers great promise for generating photothermal responsive sustained-release material, shedding light on long-term control of injurious trunk borers and environmental protection.
研究领域:
昆虫学
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环境科学
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材料科学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
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IF 9
Ruzhen Zhao,Manxing Huo,Ziwen Ying,Lijuan Liu,Qifeng Wei,Xiulian Ren
Lithium and boron are important strategic resources related to national defense and people’s livelihood. We invented an acidic extraction system N221 for simultaneous extraction of lithium and boron. However, in the process of extracting Li + from acidic extraction system, the pH of the system will inevitably decrease, which will increase the acidity during stripping. Therefore, we propose to add N235 to N221 to form an ion-pair extraction system, so that Li + can enter the organic phase in the form of neutral compound LiCl. The results show that the ion pair system can effectively improve the pH of the system and increase the operating pH range during stripping, and it is not necessary to use acid for stripping. This not only avoids the corrosion of equipment by the use of acid, but also avoids the harm to the environment caused by the use of acid. And the addition of N235 effectively reduced the Mg/Li ratio. Besides, N221 extractant has good regeneration performance and can meet the later industrial practical application. This experiment overcomes the shortcomings of N221 system, and it can be foreseen that this study also has broad application prospects in recovering lithium from spent lithium-ion batteries.
研究领域:
化学工程
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材料科学
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环境科学
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冶金工程
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分离技术
✓ 已验证
产品关联
DOI
高影响因子
Colloid and Interface Science Communications
·
2021
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IF 4.914
Weichun Wu,Shenxi Min,Qin Tong,Junhao Wang,Jianghong Hu,Ashish Dhamsaniya,Anamik K. Shah,Vaibhav P. Mehta,Bin Dong,Bo Song
As the third most abundant trace element in human internal environment, Cu 2+ has a significant impact on organisms and ecosystems. The determination of Cu 2+ is an important topic in the field of environmental protection and food safety. In this study, a coumarin-based fluorescent probe (denoted by ICTAB) was designed and synthesized. The results indicate that ICTAB is a “turn-off” fluorescent probe for Cu 2+ , with extremely high selectivity and sensitivity. The limit of detection is down to 0.27 μM. Mass spectroscopy and Job's plot show that ICTAB and Cu 2+ form 2:1 coordinate complexes, and the specific binding sites of Cu 2+ on ICTAB were determined by FTIR and 1 H NMR. More importantly, the fluorescent emission of ICTAB can be repeatedly recovered by removing Cu 2+ with S 2− , which functions as an effective “turn-off” fluorescent probe. ICTAB demonstrated over 89% of recoveries as being applied in detecting Cu 2+ in water.
研究领域:
分析化学
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环境科学
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食品安全
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2022
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IF 14.224
Lijun Guo,Liangqiong Peng,Jiheng Li,Wenhua Zhang,Bi Shi
The simultaneous removal and selective separation of U(VI) and Th(IV) via adsorption remain challenging due to their strong mobility, reactivity, and similar chemical properties. Thus, a surface-functioned lignin nanoparticle (AL-PEI) was synthesized to adsorb U(VI)/Th(IV) in a unitary system via a pH-dependent process. In alkaline solution, AL-PEI exhibited excellent adsorption performance, and the maximum adsorption capacities for U(VI) and Th(IV) reached 392 and 396 mg/g, respectively. Discrepantly in acidic solution, the adsorption performance of AL-PEI for U(VI) could still reach a high capacity (332 mg/g), whereas highly limited adsorption capacity (less than 40 mg/g) for Th(IV) was obtained, and the separation factor of U(VI) from U(VI)-Th(IV) matrix significantly reached 6662 in 3 M of the HNO 3 medium. The simultaneously efficient adsorption in alkaline solution and highly selective separation performance in acidic solution of AL-PEI also showed excellent anti-ions interference capacities, high reusability, and strong stability. This study is the first to apply lignin fabricating radiation-resistant adsorbent material, and the adsorbent displays good performance for U(VI)/Th(IV) removal and selective separation via a novel pH-dependent process, which is important to the green and sustainable development of nuclear energy and environmental protection.
研究领域:
环境科学
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核工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
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IF 9
Xingrui Li,Zihao Ma,Jiangmin Guo,Yu Zhang,Tianmeng Ye,Shaojun Liu,Peng Xing,Hao Song,Weihong Wu,Chenghang Zheng,Xiang Gao
Recycling Li, P and Fe from cathodes of spent LiFePO 4 batteries plays a significant role in mitigation of Li resources shortage, as well as environmental protection. In this study, black mass from spent LiFePO 4 batteries were subjected to roasting at 600 °C under a nitrogen atmosphere to inhibit the oxidation of Fe 2+ . Then, Li, Fe and P in the black mass were successfully leached into the solution under optimal conditions (2 mol/L H 2 SO 4 , liquid to solid ratio of 10:1, temperature of 35℃, 300r/min stirring for 120 min), that achieved the initial separation of these elements from graphite and part of Al. Subsequently, a two-stage precipitation process, consisting of a cementation reaction followed by pH value adjustment, was employed to sequentially remove Cu and Al from the leaching solution. The total separation efficiencies for Cu and Al achieved 99.93 % and 95.37 % (based on contents of black mass), respectively. After separation of Cu and Al, 96.03 % of Li and 83.69 % of P present in the black mass were successfully recovered in the forms of Li 2 CO 3 and FePO 4 , respectively. The strategy developed herein provides valuable guidance for the resource utilization of P, Fe and Li, demonstrating promising potential for industrial-scale applications.
研究领域:
材料科学
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化学工程
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环境科学
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电池回收
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冶金学
✓ 已验证
DOI
高影响因子
Journal of Coatings Technology and Research
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2025
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IF 2.8
He Chengtian,Chen Rongrong,Liu Xin,Wang Chao,Liu Qi,Liu Jingyuan,Liu Peili,Wang Jun
Marine biofouling has caused huge economic and energy losses, and the application of marine antifouling coatings is one of the effective solutions to this problem. Sily-acrylate based self-polishing coatings are favored because of excellent antifouling performance. However, weak static antifouling performance restricts the development of sily-acrylate based antifouling coatings. To solve this problem, an eugenol ester-based sily-acrylate polymer (EMSPs) is synthesised, which showed both self-polishing and antifouling performance. The highest content of eugenol (EMSP-16) inhibits Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) up to 62.2% and 76.3%, respectively, and inhibits the adhesion of Halamphora sp. and Nitzschia closterium (N. closterium) up to 85.1% and 90.8%, respectively. Mussel adhesion experiments show that mussels tend to avoid coatings with high eugenol content. The eugenol ester-based sily-acrylate polymer provides a new way to develop new environmentally friendly marine antifouling coatings and alleviate heavy metal pollution in the marine environment.
研究领域:
材料科学
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海洋生物学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2024
·Vol. 11
·期 31
·2403352
·
IF 14.3
Xiaoman Zhang,Xuyi Wang,Kun Nie,Xiuqiang Duan,Ziyao Hu,Xiaodong Zhang,Lefu Mei,Luoxin Wang,Hua Wang,Xiaoxue Ma
Lead-free halide perovskites possess excellent photoelectric properties, making them widely used in the photoelectric fields. Herein, lead-free double perovskite crystals (PCs) doped with manganese (Cs 2 NaInCl 6 :Mn 2+ ) are successfully prepared by the more energy-efficient crystallization method. The crystals emit bright orange-red light under the ultraviolet (UV) lamp, showing unique optical properties. They have the highest photoluminescence quantum yield of 42.91%. The white light-emitting diodes (LEDs) are fabricated using these perovskite crystals, which show a color rendering index of 92 and external quantum efficiency (EQE) as high as 16.3%. Furtherly, perovskite-modified fiber paper made of aramid chopped fibers (ACFs) and polyphenylene sulfide (PPS) exhibited fluorescent properties under different conditions. This paper combines fiber composite technology with PPS fiber filter bags, which are widely used in environmental protection, for the first time and demonstrates functional fiber filter bags with fluorescent characteristics. This filter bag provides an idea for the automatic detection of industrial filtration. Meanwhile, after being exposed to industrial waste gas for 60 h, the filter bag can maintain superior fluorescence performance. In this study, lead-free double perovskites are synthesized using an efficient method for preparing high-performance LEDs and high-stability fluorescent fibers. Concurrently, the application of perovskites in environmental protection is expanded.
研究领域:
材料科学
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光电技术
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环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Wenxuan Fang,Chang Sun,Zhengying Chang,Yandi Wang,Xiangxue Wang,Shujun Yu
The highly efficient extraction of uranium from aquatic environments through adsorption method has emerged as a pivotal research focus, particularly within the domains of environmental protection and sustainable development. In this investigation, magnetically recyclable mesoporous ZnFe 2 O 4 @g-C 3 N 4 (ZFOCN) is synthesized by grafting ZnFe 2 O 4 (ZFO) nanospheres onto g-C 3 N 4 (CN) nanosheets through straightforward solution mixing followed by simple calcination, which addresses the challenge associated with the recovery of adsorbents. Characterization analyses and batch experiments reveal that the ZFOCN surface exhibits more negative zeta potential (∼−14.00 mV when pH = 5) alongside reduced contact angle with water (∼43.1° on average). Consequently, ZFOCN demonstrates superior adsorption capacity ( q max = 36.3 mg·g − 1 ), accelerated reaction kinetics (reach equilibrium within approximately 8 h) and heightened selectivity compared with CN and ZFO at pH = 5, which is better fitted by Freundlich isotherm model and pseudo-second-order kinetic model. Notably, the cycle experiment results indicate that it retains high efficiency even after five cycles (∼80 %), showing remarkable recyclability. During the adsorption process, the underlying reaction mechanisms are identified as electrostatic interaction coupled with inner-sphere surface complexation predominantly attributed to Zn–O and Fe–O bonds. Thus, this study not only introduces an effective strategy for fabricating novel magnetic adsorbent but also offers fresh insights into eliminating U(VI), contributing significantly to environmental preservation and sustainable advancement.
研究领域:
环境科学
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材料科学
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纳米技术
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化学工程
·
可持续发展
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2023
·
IF 8.8
Mingyan Li,Taotao Zhe,Ruixia Li,Feier Bai,Pei Jia,Zhihao Xu,Xin Wang,Tong Bu,Haiyu Wu,Li Wang
Designing efficient and sensitive methods for the detection of nitrofurantoin (NFT) residues is of great importance for food safety and environmental protection. Herein, a composite with cobalt nanoparticles encapsulated in nitrogen-doped carbon nanotube (N/ [email protected] @CC-II) was synthesized by in-situ growth and sublimation-gas phase transformation strategy and used to establish an ultrasensitive electrochemical sensor for NFT determination. The N/ [email protected] @CC-II sensor exhibits uniform N doping, fine hollow structure, and abundant active metal sites, which lays a solid foundation for the ultra-sensitive detection of NFT. Benefiting from these advantages, the N/ [email protected] @CC-II exhibits excellent sensitivity (8.19 μA μM −1 cm −2 ) and low detection limit (18.41 nM) for NFT detection. The practical feasibility of N/ [email protected] @CC-II was also demonstrated by the determination of NFT in milk and tap water samples. This study may open up new opportunities for the application of N -doped carbon nanotube materials encapsulating transition metals.
研究领域:
分析化学
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材料科学
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环境科学
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食品科学
✓ 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）