CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Shichong Guo,Limei Dong,Junfeng Li,Zhenzong Lu,Yanshuo Li,Mutai Bao,Yiming Li
Crude oil spills in marine ecosystems have been a global environmental problem. Photothermal oil-adsorbing materials have shown enormous potential in cleaning up viscous crude oil spills, yet challenging to achieve efficient adsorption under insufficient light. Herein, a simple Pickering emulsion route was used to encapsulate phase change materials (PCMs) in photothermal cellulose-based aerogels (Pa@SCCA) for efficiently utilizing solar energy and remediating viscous crude oil spills. Pa@SCCA demonstrates excellent shape stability, thermal stability and importantly it shows outstanding hydrophobicity and compressibility due to methyltrimethoxysilane (MTMS) modification, thus enabling it to selectively adsorb and recover viscous crude oil. Carbon nanotubes (CNTs) was doped in the Pa@SCCA to allow the efficient conversion from solar energy to heat, and PCMs with thermal-storage ability can continuously reduce the viscosity of crude oil even under insufficient light by releasing thermal energy. Significantly, the preheated Pa@SCCA can remove viscous crude oil spills from cryogenic seawater (10 ℃) without light assistance. The introduction of PCMs improves overall solar energy utilization efficiency and the adsorption capacity for viscous crude oil under unstable light. The coupling of photothermal porous materials with PCMs offers significant advantages over conventional photothermal adsorbents.
研究领域:
环境科学
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材料科学
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DOI
高影响因子
Advanced Materials Interfaces
·
2020
·Vol. 7
·期 4
·1901671
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IF 4.948
Miao Yu,Peng Xu,Jin Yang,Lai Ji,Changsheng Li
For dealing with crude oil spills, the high viscosity of crude oil greatly limits the absorption capacity of the absorbent materials, making crude oil a major obstacle in the cleaning process. Herein, a MoS 2 -rubber sponge (MoS 2 -RS), as a photothermal sorbent, is prepared by a one-step in situ synthesis. The sponge exhibits excellent superhydrophobicity (the water contact angle is 151°), a high absorption capacity for oils and organic liquids (15–67 g g −1 ), and an outstanding compressive elasticity of 38.6 kPa. Furthermore, MoS 2 -RS shows a good photothermal conversion capability. Under illumination, the viscosity of crude oil could be effectively reduced due to the rapid temperature rise in MoS 2 -RS. This response allows the modified sponge to quickly absorb crude oil, which significantly reduces the adsorption time of 20 µL crude oil from 16 h to 19 s when compared to that of absorbent materials without a photothermal conversion capability. Because of the excellent mechanical performance, MoS 2 -RS could be installed in a vacuum pump to continuously collect crude oil from the water surface. This setup greatly improves the crude oil collecting efficiency. The new photothermal absorbent material shows great potential for the collection of crude oil and the cleanup of spill accidents.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2021
·
IF 9.229
Zhangdi Li,Qiong Tian,Jicheng Xu,Shouzhen Sun,Ying Cheng,Fengxian Qiu,Tao Zhang
Effective cleanup of viscous crude oil spills remains a persistent and crippling challenge. Herein, this work presents a Joule-heated superhydrophobic flower-like Cu8(PO3OH)2(PO4)4·7H2O-coated copper foam (SHB-CF@CP) for rapid cleanup of viscous crude oil spills via a facile strategy. The SHB-CF@CP shows outstanding water repellency and excellent stability of hydrophobicity in harsh environments. Due to the high electrical conductivity and thermal conductivity, it requires lower power energy consumption (less than 1 V of voltage input) to raise the temperature significantly, which dramatically reduces the viscosity of crude oil (from ∼2 × 105 to ∼60 mPa s) and then increases the oil absorption rate, effectively avoiding the poor mobility and ineffective absorption of viscous crude oil. Notably, the SHB-CF@CP can achieve continuous and quick cleanup of crude oil under in situ pumping force. The high-performance Joule-heated SHB-CF@CP sorbent with a strong porous skeleton, corrosion resistance, and low predicted operational costs holds a promise of promoting its practical applications in the cleanup of intractable and large-area viscous oil spills.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Bioresources and Bioproducts
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2025
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IF 13
Shuwei Tang,Lansheng Wei,Zhengguo Wu,Jiayao Weng,Jiwen Luo,Xiaoying Wang
Efficient cleanup of crude oil continues to be a global challenge owing to its inherent high viscosity, which makes it difficult to remove with conventional porous adsorbents. Here, a novel multifunctional aerogel was fabricated through directional freeze-drying, leveraging its photothermal properties and directional structure for the rapid cleanup of crude oil. The aerogel incorporates 2,2,6,6-tetramethyl-1-piperidinyloxy oxidized nanocellulose to enhance Ti 3 C 2 T x (MXene) to construct functional networks, MXene/gold nanoparticles (MX/AuNPs) as photothermal absorbers, and methyltrimethoxysilane for hydrophobic coatings. After 30 compression-release cycles at 90% strain, the strain retention of the aerogel is 85.7%, indicating its mechanical super-elasticity. The as-prepared aerogel showed durable hydrophobicity (145°), high oil/organic solvent absorption capacity (45.7–85.6 g/g), and efficient photothermal conversion, rapidly attaining and sustaining 76 °C. Interestingly, for viscous crude oil that cannot be absorbed for a long time, the aerogel completed the absorption within 10 s after illumination, demonstrating an improved absorption ability of viscous crude oil. Furthermore, the obtained aerogel successfully achieved controlled and rapid light-driven motion, as well as long-lasting photothermal sterilization performance. This work presents a feasible strategy for developing multifunctional composite aerogels, addressing the increasing demands in crude oil separation applications.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
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2021
·
IF 9.381
Xinyu Zhao,Furui He,Gaobo Yu,Yuhong Feng,Jiacheng Li
The separation of crude oil from oily water and collection of the emulsion constituents has attracted significant attention. We demonstrate that the relationships between inherent dynamic factors and the performance of a Pickering emulsion stabilized by SiO 2 particles with adsorbed hydrophobically modified sodium alginate derivatives (HMSA), a natural pH-sensitive polysaccharide , can be clarified via a multi-scale methodology. Functionalization of the silica surface with HMSA controls particle dispersibility, as verified by turbidity and stability analyses, the zeta potential , and transmission electron microscopy measurements. The interaction mechanism between HMSA and SiO 2 nanoparticles was elucidated by both experimental adsorption measurements and computer simulations, which showed qualitative consistency. The aggregation/disaggregation of HMSA/SiO 2 particles achieved by tuning the pH of the solution facilitated reversible dispersibility/collectability behavior. Overall, a high-viscosity Pickering emulsion system based on particle-particle and droplet-droplet interactions, which can be filtered for the recovery of spilled crude oil, was demonstrated.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2022
·
IF 7.392
Yiru Zhang,Bo Wang,Bingzhong Wang,Xiao Yang,Shuai Ma,Yuezhan Feng,Chuntai Liu,Changyu Shen
Frequent occurrences of oil spill accidents have posed a serious threat to ecological system and human health, hence it is imperative to explore new-typed absorbent materials to efficiently clean up high-viscosity crude oil in an environmentally-friendly way. Herein we reported a reduced graphene oxide-wrapped and fluoroalkylsilane-modified thermoplastic polyurethane porous monolith (abbr. F-rGO@TPU monolith) with superior photothermal effect for solar-driven high-efficiency cleanup of crude oil spill. Owing to superior superhydrophobicity (water contact angle of 153°) and porosity (87.4 %), the as-prepared F-rGO@TPU monolith possessed high saturated absorption capacity (6.5–53.7 g/g) and splendid oil/water separation efficiency (over 99.3 %) for various low-viscosity oils/organic solvents. Excellent reversible compressibility and fatigue resistance (1000 compression cycles under 80 % strain) allowed the monolith to repetitively absorb oil via simple manual squeezing. By virtue of the outstanding photothermal effect of reduced graphene oxide coating, the F-rGO@TPU monolith exhibited almost full absorption (96.0 %) of solar spectrum (wavelength range of 250–2500 nm) and efficient light-to-heat conversion capability (achieving 80 °C in 5 min under 1.0 kW/m 2 solar irradiation), enabling it to in situ reduce the viscosity of crude oil for rapid absorption. More importantly, the solar-heated monolith could continuously and fast separate crude oil/water mixture by a pump-assisted absorption device (crude oil flux of 510 kg/(m 2 ·h)), revealing immense potential in oil spill remediation.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
CHEMOSPHERE
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2019
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IF 5.108
Dafan Chen,Aiqin Wang,Yiming Li,Yajie Hou,Zhining Wang
An effective and conventional remediation technique in marine oil spills is to apply chemical dispersants to emulsify oil slicks into small oil droplets. Still, the potential hazards of chemical dispersants onto the marine ecosystem have motivated the research for environmentally friendly alternative while keeping exceptional dispersion ability. Here, we showed that the mixture of palygorskite (PAL) and rhamnolipid (Rha) formed a biocompatible alternative to synthetic surfactants used for oil spill dispersion. The oil droplets dispersed by R-PAL presented a small average size and long-term stability, which illustrated the synergistic interactions between Rha and PAL acting as an efficient dispersant in artificial sea water (ASW). Due to the strong flocculation caused by high salinity , PAL alone was not effective emulsifiers in ASW. A small amount of Rha could played a major role in modifying the surface characteristics of PAL and decreasing oil-water interfacial tension. Therefore, PAL particles irreversibly adsorbed onto the oil-ASW interface and formed a rigid interfacial film around oil droplets in the presence of Rha, which offered an efficient barrier to droplet coalescence. The synergistic interactions between PAL and Rha could enable the dispersion of tetradecane in ASW. Such a functionality was further tested in dispersing crude oil in ASW. The study presents a new strategy of using a mixture of PAL and Rha for oil dispersion, thus providing an ecofriendly alternative to conventional dispersants.
研究领域:
环境科学
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材料科学
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海洋学
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产品关联
DOI
PubMed
高影响因子
CARBON
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2021
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IF 9.594
Pengfei Liu,Xiaofeng Li,Xiyuan Chang,Peng Min,Chao Shu,Yongji Li,Yu Kang,Zhong-Zhen Yu
Anisotropic graphene aerogels (GAs) are usually fabricated by unidirectional-freezing with graphene oxide (GO) dispersion as the precursor. However, polymer additives or pre-gelation are usually required to enhance the anisotropic architectures, which often cause attenuations in electrical conductivity and shape control accuracy. Herein, we demonstrate a calcium ion-assisted unidirectional-freezing approach for fabricating highly anisotropic GAs by unidirectionally freezing aqueous suspensions of GO with a trace amount of calcium ions, followed by freeze-drying and thermal reduction. The calcium ions could slightly crosslink GO sheets by coordination, and hence reduce the interaction between GO sheets and in situ grown ice pillars, benefiting vertical alignment of the GO sheets. After freeze-drying to sublime these ice pillars, high-temperature annealing is adopted to thermally reduce the anisotropic GO aerogels by removing their oxygen-containing groups, resulting in highly anisotropic GAs. The lightweight and anisotropic GA exhibits excellent sensitivity and durable reversibility as a piezoresistive sensor because of its highly aligned porous architecture. Furthermore, GA exhibits prominent adsorption capacity for many organic pollutants from wastewaters. Interestingly, the vertically aligned porous structure of GA enhances its solar-light absorption and solar-thermal energy conversion, making GA efficient in decreasing the viscosity of crude oil and thus enhancing its adsorption capacity .
研究领域:
材料科学
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环境科学
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传感技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Water Process Engineering
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2024
·
IF 6.3
Wenqing Han,Yehai Yan,Huifang Wang,Peng Li,Haoting Lin,Jinzhong Li,Jian Cui,Guangfa Zhang
Developing high-performance adsorbent materials featuring with all-weather service and high sorption efficiency to recover viscous crude oil spills in harsh environments is urgently required, yet it still remains an onerous challenge. Herein, a prominent Janus polydimethylsiloxane (PDMS) & Ti 3 C 2 T X MXene @ polyurethane sponge (JPMPU) was exploited via a convenient anisotropic successive depositing technology. Thanks to controllable asymmetric decoration of Ti 3 C 2 T x MXene/PDMS and hydrophilic components on two antithetic sides, the resulting sponges exhibited a fascinating asymmetric superwettability, rendering JPMPUs superb interfacial floating stability and overturning-resistance property. Moreover, Janus sponges displayed outstanding photothermal and Joule-heating effects. Particularly, ultrahigh temperatures of 99.5 °C and 102.1 °C were acquired for JPMPU under the sunlight intensity of 1.5 kW m −2 and the applied voltage of 10 V, respectively. On the basis of these favorable features, JPMPUs exhibited a remarkable in situ sorption capability for high-viscous crude oil spills, which can absorb >16.1 and 19.0 times its own weight of crude oil driven by the solar heat and Joule heat, respectively. Consequently, together with robust recyclability , this 3D porous Janus thermal management sponge with superior self-heating integration functionality and robust self-floating stability shows great potential for fast all-weather crude oil recovery in harsh environments.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2019
·
IF 3.131
Gaoyang Liu,Jiajun Wang,Wei Wang,Dan Yu
The crude oil leakage pollution has become a serious problem which frequently occurs all over the world. To solve this issue, highly efficient oil-water mixtures separation material requires urgently. Herein, a superhydrophobic PET fabric was developed by using a facile and novel method based on UV induced radical polymerization . The prepared PET fabric showed excellent superhydrophobicity with a water contact angle of 156.3°±2° and anti-fouling property either in air or in oil. This superhydrophobic PET fabric not only can be used as a robust oil absorbing material (48∼73 times of its own weight), but also an outstanding separation oil material with separation efficiency of 98.6%, and still maintains 97% after recycled for 10 times. Additionally, the obtained fabric exhibited self-cleaning property and remains durable anti-fouling performance under harsh environments. In sum, this fluorine-free superhydrophobic PET fabric can be a promising crude oil leakage clean up material with self-cleaning property.
研究领域:
材料科学
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环境工程
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2020
·Vol. 31
·期 3
·2006806
·
IF 16.836
Ming-Bang Wu,Sheng Huang,Ting-Yu Liu,Jian Wu,Seema Agarwal,Andreas Greiner,Zhi-Kang Xu
Fast and efficient cleanup of crude oil spills is still a global challenge because most of the crude oils are highly viscous and lowly fluid. Herein, a kind of polydimethylsiloxane-decorated wood carbon sponges (PDMS@WCS) with desirable compressibility and hydrophobicity for the fast adsorption and enhanced recovery of crude oil via the promotion of Joule-heating and photothermal effect is reported. Moreover, the PDMS@WCS can be compressed and released at a constant strain of 50% for over times without structural damage due to the protection of PDMS coating. Thus, the adsorbed crude oil can be facilely excluded from PDMS@WCS under external pressure to show enhanced recovery.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Tingjie Chen,Yuhan Tang,Gang Zhao,Zhaoxing Lin,Lihong Xu,Zhenzeng Wu,Xiangfang Peng
As environmental pollution intensifies, particularly due to the severe ecological threats posed by crude oil spills, there is an urgent need to develop hydrophobic/oleophilic porous absorbents with self-heating capabilities. These absorbents can reduce crude oil viscosity through in-situ heat transfer, thereby accelerating the remediation process. Herein, A novel multifunctional and compressible sponge (m-PFS@PPy@Fe₃O₄) is developed by self-assembling PPy, Fe₃O₄ nanoparticles, and polydimethylsiloxane onto the plant fiber sponge. The m-PFS@PPy@Fe₃O₄ exhibits high hydrophobicity and excellent compressibility, making it highly effective in separating oil-water mixtures with a high oil absorption capacity (24.7 ∼ 53.5 g/g). Due to the synergistic effect of photothermal and magnetic-thermal properties, the surface temperature can rapidly rise from 28.0°C to 96.9°C under 1 sun irradiation and 54.2°C under a specific magnetic field. This heat generation, effective in all weather conditions, overcomes limitations related to both weather and energy. The generated heat is transferred to the oil, significantly reducing its viscosity and speeding up the oil absorption process. More importantly, the sponge can be connected to a vacuum pump-assisted absorption device, enabling continuous recovery of crude oil from the water surface under sun irradiation or magnetic field, demonstrating great potential for highly efficient remediation of viscous oil spills.
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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能源与可持续发展
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）