Journal of Environmental Chemical Engineering
·
2022
·
IF 7.968
Shinuo Wang,Yinghao Ruan,Ludong Yi,Di Liu,Jun Wang,Dawei Fang,Zhaohong Zhang
In this study, a thermally assisted hydrodynamic cavitation (HC) system was established by adding a water pre-heater in front of the cavitation device (orifice plate), which realizes the local heating of the flowing liquid, intensifies the HC effect and enhances Rhodamine B (RhB) degradation ratio and heat generation efficiency. The effects of preheating temperature, RhB initial concentration, orifice hole number, inlet pressure and solution volume on RhB HC degradation and heat generation were investigated. Free radical trapping experiments were performed to explore the active substances produced by the HC effect. Based on LC-MS and TOC data, the possible RhB degradation pathway and mechanism were proposed. When the preheating temperature rose from 10 °C to 50 °C, the RhB degradation ratio increased from 23.42% to 34.49% within 90 min cycle time, and the treatment cost decreased from 130.699 USD/m 3 to 91.701 USD/m 3 . At 30 min cycle time, the solution temperature rose from 45.6 °C to 56.4 °C, the heat production increased from 149.46 KJ/L to 194.81 KJ/L and the corresponding thermal efficiency increased from 47.45% to 61.84%. Further, at 60 min cycle time, under the conditions of 30 °C preheating temperature, 30 mg/L RhB initial concentration, 3-hole orifice plate, 3 bar inlet pressure and 5.0 L RhB solution volume, the RhB degradation ratio was the highest (40.38%). After Fenton reagent was used, the RhB degradation ratio and heat production both were further enhanced. At 60 min cycle time, the RhB degradation ratio was 65.52%, solution temperature rose to 72.8 °C, the heat production reached 131.83 KJ/L and the treatment cost was only 45.447 USD/m 3 at 30 °C preheating temperature. TOC test results show that the RhB mineralization ratio can reach 61.53% after 90 min cycle. All in all, this work proves that thermally assisted HC is an effective method to degrade organic dyes and generate heat, which can be used for large-scale treatment of organic dye wastewater.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
高影响因子
CHEMOSPHERE
·
2020
·
IF 5.778
Xiangnan Zhang,Kai Yu,Hong Zhang,Yuning Liu,Jing He,Xiangyu Liu,Jie Jiang
Microplastics (MPs) pollution in the marine has become a global concern. To obtain accurate measurements of MPs in the marine sediments is important for understanding its effects and potential risks to the environment. In this study, we developed a novel method for extracting MPs from sediments by density flotation of sodium dihydrogen phosphate (NaH 2 PO 4 ) solution, which utilized the heating-assisted to increase the density of separation solution. It features high density, nontoxic, and economic, indicating its promising application in the MPs extraction. A standard procedure based on NaH 2 PO 4 for extracting MPs from sediments was established and validated by the recovery experiments of seven common plastics. Results showed NaH 2 PO 4 solution exhibited higher recovery rates than the commonly-used NaCl solution; three plastics with high density couldn’t be recovered by NaCl, while NaH 2 PO 4 was available for all the studied MPs. A large number of real beach samples was collected and validated by this method, and the abundance and characteristic of the collected MPs were further analyzed. Results exhibited the heating-assisted NaH 2 PO 4 could be a promising way for extracting MPs in environmental samples.
研究领域:
环境科学
·
海洋学
✓ 已验证
DOI
高影响因子
CARBON
·
2022
·
IF 11.307
Qingqiang Ran,Xuepeng Wang,Peng Ling,Peiwen Yan,Jun Xu,Long Jiang,Yi Wang,Sheng Su,Song Hu,Jun Xiang
Although several groups have reported bimodal emissive carbon dots (B-CDs) and paid considerable attention to their ratiometric fluorescent sensing application in recent years, the establishment of convenient yet robust strategies that can generate B-CDs from various low-cost and extensive carbon sources is still required. Here a novel thermal-assisted electrochemical strategy for preparing B-CDs from low-cost carbon sources, including graphite and raw coal, is reported. The as-prepared B-CDs exhibit bimodal photoluminescence (PL) emission at 415 and 510 nm under single-wavelength excitation. Furthermore, the origination of the bimodal emissive characteristics of the as-prepared B-CDs was investigated in detail. Under thermal induction, the carbonyl-related surface state PL centers are generated at the surface of B-CDs, and the co-existence of the carbonyl-related surface state and core state PL centers results in bimodal PL emission. Finally, to demonstrate its practical application, a ratiometric PL nanoprobe was developed to sense pH. This thermal-assisted electrochemical strategy is versatile and potentially suitable to a wide range of low-cost carbon sources.
研究领域:
材料科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Jiaming Li,Shuo Wang,Yizhen Jiang,Shangshang Wang,Jingting Sun,Yuxi Song,Chao Liu,Qinfang Zhang
The process of Photocatalytic Hydrogen Evolution (PHE) represents a reliable method for addressing the energy crisis. In this work, a self-assembly method was performed to combine 2D NiPS 3 (NPS) nanosheets (Ns) with 2D CN Ns to prepare NPS Ns/CN Ns (NPCN) 2D/2D heterojunctions with intimately interfacial contact between these two components. Compared to CN Ns, NPCN photocatalysts possess wide-spectrum light absorption regions, excellent light-to-thermal energy effect, electron mobility, charges transfer, and abundant surface active site, thus leading to the enhanced PHE performance for NPCN composites in natural seawater and simulated seawater. Meanwhile, the negative effect of the added various ions on the PHE performance was revealed over 2-NPCN using different typical aqueous solutions. The first-principle calculations and experimental analysis were performed to gain a deep understanding of the underlying mechanisms responsible for the exceptional HER activity over NPCN composites. Drawing from the characterization and DFT calculation results, a photothermal-assisted PHE mechanism was proposed over NPCN composites. This work provides a strategy for the design and synthesis of efficient, stable and highly active g-C 3 N 4 -based heterojunctions.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Yuxing Shi,Zhouze Chen,Pengyu Hao,Pengnian Shan,Jialin Lu,Feng Guo,Weilong Shi
Photothermal-assisted photocatalytic hydrogen production is a very promising way to maximize solar energy utilization to obtain clean energy. Herein, we designed a composite photocatalyst with coating core-shell Fe 3 O 4 @SiO 2 nanoparticles on the surface of ZnIn 2 S 4 micro-flowers for high-efficient photothermal-assisted photocatalytic water/seawater splitting. Experimental results reveal that in the core-shell structure of Fe 3 O 4 @SiO 2 , the addition of the SiO 2 shell in Fe 3 O 4 @SiO 2 not only separates the photothermal and photochemical components, avoiding competition between them, but also further increases the temperature of the core in a manner similar to the greenhouse effect , which was used as a hot core to provide heat to the ZnIn 2 S 4 photocatalyst to increase the surface reaction temperature and enhance the collision chances of photo-generated carriers into causing severe recombination of carriers, thus promoting the hydrogen generation. Significantly, the optimal photocatalytic water/seawater splitting into hydrogen production rates over Fe 3 O 4 @SiO 2 /ZnIn 2 S 4 are up to 1258.5 and 1108.5 μmol g -1 h −1 , which are 11.9 and 14.7 times higher than that of pristine ZnIn 2 S 4 , respectively. This study provides an idea for the design of highly efficient photothermal-assisted photocatalysts.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Reports: Energy
·
2023
·
IF 0
Xiu-Qing Qiao,Wenxuan Chen,Chen Li,Zizhao Wang,Dongfang Hou,Bojing Sun,Dong-Sheng Li
Photocatalytic water splitting on noble metal-free photocatalysts for H 2 generation is a promising but challenging approach to realize solar-to-chemical energy conversion. In this study, Mo/Mo 2 C nanoparticles anchored carbon layer (Mo/Mo 2 C@C) was obtained by a one-step in-situ phase transition approach and developed for the first time as a photothermal cocatalyst to enhance the activity of ZnIn 2 S 4 photocatalyst. Mo/Mo 2 C@C nanosheet exhibits strong absorption in the full spectrum region and excellent photo-thermal conversion ability, which generates heat to improve the reaction temperature and accelerate the reaction kinetics. Moreover, metallic Mo/Mo 2 C@C couples with ZnIn 2 S 4 to form ZnIn 2 S 4 –Mo/Mo 2 C@C Schottky junction (denoted as ZMM), which prevents the electrons back transfer and restrains the charge recombination. In addition, conductive carbon with strong interfacial interaction serves as a fast charge transport bridge. Consequently, the optimized ZMM-0.2 junction exhibits an H 2 evolution rate of 1031.07 μmol g −1 h −1 , which is 41 and 4.3 times higher than bare ZnIn 2 S 4 and ZnIn 2 S 4 –Mo 2 C, respectively. By designing novel photothermal cocatalysts, our work will provide a new guidance for designing efficient photocatalysts.
研究领域:
材料科学
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能源化学
·
纳米技术
✓ 已验证
DOI
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Yanyu Zhao,Xiangju Song,Lin Zheng,Yan Zhang,Wenyuan Liang,Minghua Huang,Heqing Jiang
A highly permeable thin-film composite (TFC) polyamide membrane with efficient salt rejection is valuable for numerous industrial processes. To achieve this objective, it is essential to innovate the membrane fabrication process to produce an ultrathin polyamide separation layer. In this study, a photothermal-assisted interfacial polymerization (IP) strategy was proposed to fabricate TFC polyamide membranes by incorporating carboxylated carbon nanotubes (CNTs) with exceptional photothermal properties. CNTs absorb solar energy and convert it into heat, significantly elevating the temperature in their microregions, thereby accelerating the reaction between m-phenylenediamine (MPD) and trimesoyl chloride (TMC) during the IP process. Exploiting the self-inhibition characteristics of IP, the preformed polyamide layer suppresses the subsequent diffusion of MPD into the reaction interface, resulting in the formation of an ultrathin polyamide layer. Consequently, the CNTs-modified polyamide membrane with photothermal assistance obtains a thickness of approximately 94 nm, significantly thinner than the control membrane (189 nm). Furthermore, it demonstrates a superior water flux of 54.4 L m–2 h–1, higher than that of the pristine TFC membrane without CNTs and the conventional CNTs-modified membrane, while maintaining a NaCl rejection of ∼96%. The photothermal-assisted IP strategy provides some inspiration for engineering high-performance polyamide membranes available in various advanced separations.
研究领域:
材料科学
·
膜技术
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2021
·Vol. 139
·期 14
·51903
·
IF 3.125
Liurong Huang,Shuang Ding,Tian Chen,Ruike Wu,Xinyu Wang,Shifang Jia
This paper explores the structural and functional properties of collagen from tilapia scales pretreated by heat-assisted ionic liquids (ILs). Results show that the solubility of collagen was significantly influenced by the type and concentration of ILs. With the increase of IL concentration, a remarkable decrease in solubility of collagen was seen. Fluorescence spectra show that heat and IL pretreatments induced the exposure of chromophores. Changes in sodium dodecyl sulfate–polyacrylamide gel electrophoresis indicated that subunits of collagen regenerated from most of the IL solvent systems were not destroyed. The functional properties of regenerated collagen were evaluated by gel strength, viscosity, water-binding capacity, and emulsifying capacity. Results show that all heat-assisted ILs pretreatments improved the gel strength and viscosity, and the highest gel strength and viscosity were both obtained in the collagen pretreated by heat-assisted [EMIM]Cl. Heat-assisted [BMIM]BF 4 pretreatment exhibited the lowest water-binding capacity. Heat-assisted [BDMIM]Cl pretreatment indicated superior effect on improving emulsifying capacity than other pretreatments due to its ability to break most of the hydrogen bonds in collagen molecules, resulting in the formation of new re-aggregates with higher solubility and more hydrophobic groups.
研究领域:
食品科学
·
生物化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Shenglin Kang,Xuetong Zhao,Jing Guo,Jie Liang,Jianjie Sun,Yang Yang,Lijun Yang,Ruijin Liao,Clive A. Randall
Thermal-assisted cold sintering process (TA-CSP) has been applied to fabricate high dense α-Al 2 O 3 ceramics with submicron grain sizes. The α-Al 2 O 3 (80 wt%) and γ-Al 2 O 3 (20 wt%) powders are firstly mixed and then cold sintered at 300 °C to produce a green bulk with a relatively high density of ∼ 86.9 %, and then later a second heat treatment (800–1350 °C) is applied to finally fabricate (∼ 98 % dense) α-Al 2 O 3 ceramics with grain sizes of 720 nm. A microstructural analysis with XRD and TEM suggests that the TA-CSP samples not only complete the final densification but also drive a phase transition of γ-Al 2 O 3 to α-Al 2 O 3 . To put into perspective the Hardness and Young's modulus of TA-CSP samples reach ∼ 14 GPa and ∼ 335 GPa, respectively, which is comparable to conventional sintered samples processed at higher temperatures of 1500–1700 °C. Therefore, it is feasible to utilize TA-CSP to prepare α-Al 2 O 3 ceramics with small grain sizes at low sintering temperatures .
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Siyi Li,Pinyi Wang,Jianyun Hu,Guangcan Yang,Youjun Lu,Zhenxia Yuan,Xiao Zhang,Sen Liang
γ-AlOOH nanopowder synthesized using hydrothermal-assisted freeze-drying was employed as a precursor, with AlF₃ as a sintering aid, to explore the preparation of α-Al₂O₃ with a high specific surface area at elevated temperatures. The γ-AlOOH nanopowder produced in this study exhibited superior dispersion, achieving a specific surface area of 198.06 m 2 /g and a zeta potential of 45.8 mV. At a calcination temperature of 1200 °C, the resulting α-Al₂O₃, synthesized from γ-AlOOH and AlF₃, maintained a specific surface area of 27.72 m 2 /g, significantly higher than the typical values reported in the literature (generally below 10 m 2 /g). The α-phase purity exceeded 99 %, and the [AlO₆] proportion was 95.07 %. Furthermore, at a calcination temperature of 1150 °C, the specific surface area of the α-Al₂O₃ reached 50.48 m 2 /g. Using this α-Al₂O₃ as a carrier, a composite TiO₂ catalyst was prepared via a sol-gel and hydrothermal method. This catalyst demonstrated a photocatalytic degradation rate of over 98 % for rhodamine B (10 mg/L) within 30 min of irradiation, under the illumination of a 300 W mercury lamp in proximity to the light source.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Nanoscale Research Letters
·
2017
·Vol. 12
·期 1
·1-6
·
IF 2.833
Zhai Haifa,Liu Hairui,Li Hongjing,Zheng Liuyang,Hu Chunjie,Zhang Xiang,Li Qiling,Yang Jien
Porous- and hollow-structured LiNb 3 O 8 anode material was prepared by a hydrothermal-assisted sintering strategy for the first time. The phase evolution was studied, and the formation mechanism of the porous and hollow structure was proposed. The formation of the unique structure can be attributed to the local existence of liquid phase because of the volatilization of Li element. As the anode material, the initial discharge capacity is 285.1 mAhg −1 at 0.1 C, the largest discharge capacity reported so far for LiNb 3 O 8 . Even after 50 cycles, the reversible capacity can still maintain 77.6 mAhg −1 at 0.1 C, about 2.5 times of that of LiNb 3 O 8 samples prepared by traditional solid-state methods. The significant improvement of Li storage capacity can be attributed to the special porous and hollow structure, which provides a high density of active sites and short parallel channels for fast intercalation of Li + ions through the surface.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Zhengdi Jiang,Hongyue Lei,Lang Wu,Yi Ding
During the traditional preparation of zircon , higher sintering temperatures and longer holding times are inevitable. A novel hydrothermal-assisted sol-gel process and microwave sintering (HM, microwave sintering precursors derived from hydrothermal-assisted sol-gel process) were provided to prepare zircon ceramics hereof. The influences of sintering temperature and holding time on the phase composition, microstructure, and compactness of ceramics were investigated. Data display that the properties of the obtained ceramics were highly dependent on the temperature and time, and the ZrSiO 4 formation efficiency can be improved by increasing these two factors. The sample prepared by the HM process has the formation efficiency of ZrSiO 4 up to 91.74 wt% ( HM-1350-300 ), which far exceeds that of conventional microwave sintering ( M-1350-300 , 45.02 wt%). The results demonstrate that the HM process can be employed to obtain ZrSiO 4 ceramics rapidly at low temperatures.
研究领域:
材料科学
·
陶瓷工程
✓ 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）