Catalysts
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2022
·Vol. 12
·期 10
·1250
·
IF 4.501
Lei Zhao,Tingting Yu,Bing Yang,Huilin Guo,Lifen Liu,Jinlong Zhang,Changfei Gao,Tao Yang,Mingyan Wang,Yu Zhang
Unlike many studies on the preparation of Z-scheme heterojunctions by doping precious metals, in this paper we first prepared a core-shell material obtained by C doping in ZnO and then composite with MnO2to form a heterojunction; that is, a low-cost and highly catalytic ternary composite catalyst was prepared by a simple hydrothermal reaction. Meanwhile, a large amount of experimental data have enabled the heterostructure type as well as the mechanism of photocatalytic performance to be fully demonstrated. It is proven that C as an intermediate medium achieves electron transport while making up the deficiency of ZnO, and constitutes an all-solid state Z-scheme heterojunction, which enables the rapid transfer of photogenerated electron pairs and visible light irradiation to the stream to improve the photocatalytic performance of the composite photocatalyst. In terms of examination of degradation performance, this catalyst showed a high photodegradation rate of tetracycline hydrochloride (TC) of 92.6% within 60 min, and the surface ZnO-C/MnO2catalysts also showed good degradation effect on practical petrochemical wastewater in CODcr degradation experiments.Keywords:ZnO-C/MnO2;Z-scheme heterojunction;wastewater purification;mechanism exploring
研究领域:
环境科学
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材料科学
✓ 已验证
DOI
高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 18
·e202305086
·
IF 1.9
XuKun Qian,ZeFeng Zhao,RuiHua Zhang,ChangBai Yu
Graphical The adsorption capacity of Pb(II) ion for accordion-like Ti 3 CN Mxene is significantly increased after alkalization treatment. The maximum adsorption capacity of the alkalized Ti 3 CN MXene is up to 87.4 mg ⋅ g −1 , and the adsorption ratio reaches 96.6 %. The adsorption process is mainly controlled by chemical adsorption and belongs to surface monolayer adsorption. The presence of poisonous Pb(II) ions in water resources has raised global health concerns. Herein, the adsorption performance of accordion-like Ti 3 CN MXene for Pb(II) ions was investigated for the first time. Batch experiments were carried out by varying modifications, pH values, initial Pb(II) concentrations, adsorption time and temperatures. The results prove that the alkalized-Ti 3 CN shows enhanced adsorption performance. Although the temperature effect is insignificant, the Pb(II) adsorption is strongly pH-dependent. The maximum Pb(II) adsorption capacity of alkalized −Ti 3 CN is about 2.5 times higher than that of activated carbon. The adsorption ratio of Pb(II) is up to 96.6 %. The adsorption capacity increases with increasing the initial concentration of Pb(II). The alkalized-Ti 3 CN adsorbs Pb(II) very quickly and the adsorption equilibrium is nearly achieved within 70 minutes. The adsorption follows the quasi-second-order kinetic model as well as the Langmuir model, and is mainly controlled by chemical adsorption. It is preliminarily concluded that Pb(II) replaces Na(I) of the −ONa functional groups on the alkalized-Ti 3 CN surfaces. This study proves the alkalized-Ti 3 CN MXene has potential application for the purification treatment of wastewater contaminated with Pb(II) ions.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
DESALINATION
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2024
·
IF 8.3
Yuqian He,Linlin Yan,Mi Zhou,Kai Wang,Yingjie Zhang,Enrico Drioli,Jun Ma,Xi Quan Cheng
Interface solar-driven evaporators capture sunlight and concentration of heat at the vapor-liquid interface to efficiently evaporate water. However, challenges remain in the preparation of evaporators with a high evaporation rate and efficiency of photothermal conversion. Herein, an advanced carbon-based aerogel evaporator was designed by carboxylated multiwalled carbon nanotubes (MWCNTs-COOH) and cellulose nanofiber (CNF) entangling with each other as a backbone and in-situ polymerized polypyrrole (PPy) to constitute three-dimensional (3D) porous structure for highly efficient photothermal desalination and wastewater purification. The combination of MWCNTs-COOH with PPy reduces the energy gap (0.91 eV), endowing the aerogel with excellent photothermal conversion properties. The porous MWCNTs-COOH/PPy/CNF(CPCA) aerogel possesses an extremely low density of 0.048 g m −3 and excellent water transport capability, which exhibited a high water evaporation rate (2.48 kg m −2 h −1 ) and superior energy efficiency (90.2 %) under one sunlight intensity. The designed water evaporator can be stably and continuously applied in desalination and wastewater purification, and it is expected to be used for water purification to alleviate the worldwide water challenge.
研究领域:
材料科学
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环境科学
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能源科学
✓ 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
Zhaoxia Chen,Jianan Qu,Jin Li,Jinjuan Xue,Mingxin Wang
In this work, ZnFe-layered double oxide/MoS 2 (ZnFe-LDO/MoS 2 ) composite was successfully synthesized and applied as a photocatalytic coating immobilizing on polydopamine (PDA)-modified waste cotton fabric (CF) through a mussel-inspired catechol-amine reaction. The resulting ZnFe-LDO/MoS 2 @CF exhibited outstanding photoelectric and photothermal properties, rendering it highly suitable for water purification applications under visible light irradiation. The fabricated ZnFe-LDO/MoS 2 @CF demonstrated great potential in photocatalytic degradation of organic dyes and exhibited photocatalytic antibacterial effects. Compared to fabrics coated with bare ZnFe-LDH and ZnFe-LDO, ZnFe-LDO/MoS 2 @CF showed superior methylene blue (MB) photodegradation performance. LC-MS analysis was conducted to identify intermediate products for MB degradation. Furthermore, ZnFe-LDO/MoS 2 @CF achieved nearly 100 % sterilization efficiency against Escherichia coli and Staphylococcus aureus under visible light ascribed to the synergistic effects of photothermal and photodynamic mechanisms. Impressively, the fabric maintained its MB removal efficiency over multiple reuse cycles and retained its sterilization potency even after repeated washing, highlighting its exceptional reusability and coating stability. The combination of ZnFe-LDO and MoS 2 , with their complementary Z -scheme band structure, effectively expanded light absorption capacity and enhanced charge separation, significantly improving photocatalysis and photothermal performance. This research highlights the potential of ZnFe-LDO/MoS 2 @CF for water purification and sterilization, making it a promising candidate for complex wastewater treatment and multifunctional textile development.
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
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2024
·
IF 10.7
Rongtai Yu,Jianchao Xie,Fangfen Jin,Weiwei Lu,Mingzhu Jin,Xinyang He,Ashok K. Nanjundan,Chengzhong Yu,Xiaodan Huang
Solar-driven interfacial evaporation systems hold great potential for addressing clean water scarcity and wastewater purification challenges. However, low water yield and the presence of contaminants in wastewater remain significant obstacles. This study introduces wide light-absorbing hydrophilic aminophenol–formaldehyde (APF) resin particles with π-conjugated and π-stacked benzenoid–quinoid donor–acceptor couples as light absorbers to enhance solar-to-vapor conversion efficiency. The incorporation of hydrophilic amine groups led to a 30% increase in the evaporation rate and a 32% reduction in the evaporation enthalpy. The carbonized APF-based evaporator achieved a high evaporation rate of 2.89 kg m−2 h−1 and 3.07 kg m−2 h−1 from sewage and simulated seawater, respectively, under natural solar irradiance (0.7 suns). Furthermore, solar vapor generation rates reached 16.22 kg m−2 h−1 and 13.98 kg m−2 h−1 from sewage and simulated seawater under 3.9 suns. The APF-based evaporator also demonstrated exceptional stability and durability in solar-to-vapor conversion.
研究领域:
材料科学
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环境科学
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能源研究
✓ 已验证
产品关联
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 7
·1550
·
IF 3.2
Ke Wang,Weifeng Li,Yumei Long
As an environmentally friendly and clean energy technology, solar-driven interfacial evaporation technology has attracted wide attention. However, organic pollutants can easily pollute distilled water during the evaporation of wastewater. In this work, we report a strategy of N-TiO2/C solar absorption with a low bandgap (2.33 eV), excellent light absorption ability, and high photothermal conversion efficiency (48.2%). Black N-TiO2/C was prepared by the sol-gel method in the presence of hexamethylenetetramine as a source of nitrogen and carbon. The simultaneous N doping and C with superior photothermal effect rapidly increased the surface temperature of the material, reduced the recombination rate of electrons and holes, and improved the photocatalytic activity, showing great potential for solar thermal energy conversion. The prepared solar absorbent and polyurethane (PU) were mixed evenly to form a porous N-TiO2/C/PU (NTCP) foam for purifying water. The evaporator produced clean water at a rate of 1.73 kg m−2h−1under the simulated sunlight of 1 sun irradiation. Meanwhile, the evaporator simultaneously photodegraded methylene blue (MB) and rhodamine B (RhB) underwater at a removal rate > 90%. The bifunctional solar water evaporation device combining photocatalytic and photothermal effects holds great potential for water purification.
研究领域:
环境科学
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材料科学
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能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
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2025
·
IF 19
Chengyue Yang,Yuanbo Sun,Bin Zhao,Ji Han,Benzheng Li,Peilin Xue,Lei Xie,Jianshe Hu,Jingyi Wang
Rapid and targeted intervention during sudden mercury pollution incidents can significantly mitigate the harmful effects of mercury dissemination. Mesoporous metal–organic frameworks (MOFs) are demonstrated great promise for mercury wastewater purification, owing to their exceptional adsorption capacity. However, these materials often underperform at exceptionally high or low Hg(II) concentrations, limiting their use in emergencies. To address this issue, this study leverages nanostructure engineering techniques and, for the first time, fine-tunes the proportion of surfactants to construct a thiol-functionalized UiO-66 MOF (Nic-UiO-66-SH) with size-adjustable nano-ion channels for rapid Hg(II) pollution management in emergency contexts. The Nic-UiO-66-SH, with a maximum adsorption capacity of 1695.87 mg g −1 , can quickly and effectively adsorb Hg(II) at extreme concentrations (10–600 mg L −1 ) within 2.5–105 min, bringing the concentration down to drinking water standards (<0.002 mg L −1 ). This superior performance is attributed to the concentration-specific adsorption mechanism of ions in adaptive nano-ion channels based on Debye radius theory, which guides the precise control of channel size. Molecular simulations further validate the significant role of ion channels in optimizing Hg(II) diffusion and adsorption. This work establishes a theoretical foundation for the development of emergency wastewater purification materials and promotes their practical application in pollution response scenarios.
研究领域:
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
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
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2021
·Vol. 45
·期 15
·21476-21486
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IF 5.164
Yuanlu Xu,Haichao Mu,Xiaoshi Han,Tianjun Sun,Xinfei Fan,Bowen Lv,Zonglin Pan,Yongxin Song,Chengwen Song
Summary Solar interfacial water evaporation is considered as a potential green technology to solve the global shortage of freshwater resources. However, it is still an arduous task to develop a low-cost and efficient solar evaporator with a simple preparation method. Herein, a simple, flexible, and porous polypyrrole-wax gourd (PPy-wax gourd) biomass evaporator was reported for solar evaporation enhancement. Wax gourd had the advantages such as superhydrophilic wettability, massive microporous channels, and easy planting. PPy was a kind of black polymer with excellent light absorption ability, which greatly improved the light absorption of the PPy-wax gourd evaporator within a full spectrum of solar irradiance (300-2500 nm). The PPy-wax gourd evaporator prepared by the perfect combination of wax gourd and polypyrrole realized a superior vapor generation ability (1.57 kg m −2 hours −1 ) with a photothermal conversion efficiency of 77.3% under 1 solar intensity, which was better than some other biomass evaporators developed so far. In addition, the PPy-wax gourd evaporator also exhibited remarkable stability and durability under long-term recycling utilization and harsh environments. Importantly, the PPy-wax gourd evaporator demonstrated prominent wastewater purification capacity and desalination performance for dye wastewater and simulated seawater treatment. Based on these results, this work would offer a new strategy for developing novel biomass thermal evaporators the clean water production.
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
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Shaolong Huang,Yaojia Long,Huan Yi,Ziyu Yang,Lijuan Pang,Zhengyuan Jin,Qiufan Liao,Liangjing Zhang,Yiyue Zhang,Yuanze Chen,Hongzhi Cui,Jianguo Lu,Xinsheng Peng,Huawei Liang,Shuangchen Ruan,Yu-Jia Zeng
Significant efforts have been made to seek technologies to resolve water shortages. Among these efforts, seawater desalination and wastewater purification are considered mainstream strategies. Photothermal materials and adsorbents are the main components of solar-driven seawater desalination and wastewater purification, respectively. Herein, we propose MoO 3-x (0 < x < 1) as a multifunctional material applied simultaneously to solar-driven seawater desalination and wastewater purification. Thanks to the oxygen vacancies (OVs)-induced localized surface plasmon resonance (LSPR) and 3D nanoflower-like superstructures , the resultant MoO 3-x possesses a high total absorption of 97% over the whole solar spectrum and a high water evaporation rate of 1.51 kg m −2 h −1 as well as an calculated energy conversion efficiency of 95% under one-sun irradiation. At the same time, MoO 3-x exhibits a remarkably high removal ratio of 96.1% and a high adsorption capacity of 295.0 mg g −1 for positively charged organic dyes with a fast speed (~5 min), which is ascribed to the surface functional groups generated by OVs. Finally, the photocatalytic properties of MoO 3-x can be further utilized to recycle with green solar energy. The high photothermal conversion efficiency of the material combined with its excellent adsorption properties and good photocatalytic activity opens up exciting possibilities in energy and environmental applications.
研究领域:
材料科学
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环境科学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Baichun Wang,Kai Yang,Bohan Cai,Jintai Zhang,Chuyun Wei,Aijiao Zhou
Solar water purification is a promising scheme to relieve the energy crisis and clean water shortages. In order to improve the efficiency of producing water, it is necessary to develop a novel photothermal conversion interface to manage heat loss and boost water evaporation efficiency. Herein, a Janus hydrogel evaporator of powder active carbon (PAC) and Fe 3 O 4 in polyvinyl alcohol (PVA) and polystyrene sulfonate (PSS) cross-link hydrogel, called CFPS, is explored as the light absorber for broadband light absorption and formed a hydrogel network of the multi-hydrophilic group. Its hydrophilic/hydrophobic structure of CFPS is used to regulate heat loss and promote water transport, which can attain lower evaporation enthalpy and a higher evaporation rate . Specifically, the surface temperature of the CFPS can reach around 45 °C and 93.4% energy utilization efficiency under 1 sun illumination. In the comparison of the analogous Fe 3 O 4 -based evaporator, CFPS has the higher static evaporation rate with 3.43 kg m –2 h −1 . Besides, it has great mechanical properties, durability and anti-crystallization function, which can be adapted to the water purification scene of wastewater and hypersaline water desalination. This photosensitive magnetic hydrogel evaporator shows potential in the scenarios of wastewater purification and desalination.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2020
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IF 5.774
Qi Dong,Dongxu Yang,Liang Luo,Qiang He,Fangheng Cai,Si Cheng,Yi Chen
Chronic accumulation of fluoride (F − ) threats human health and eventually brings about skeletal fluorosis, dental fluorosis and joint deformation, which has aroused global attention. As an emerging technique, electrosorption presented great potential in wastewater purification. The key role in electrosorption is the exploitation of economical, environmentally-friendly and efficient electrode material. Nowadays, many existing investigations on the preparation of porous carbon material focused on the introduction of extra dopant and activation reagent. However, the information concerning the preparation of pure porous biochar and the inherent environmental significance is neglected. Here, a win–win strategy, named conversion waste biomass into porous biochar, has been applied in capacitive fluorine removal. The results indicated that the capacity of porous biochar electrode was 1.28 mg/g, which was improved by 48.8% in contrast to activated carbon electrode. Furthermore, competition experiments revealed concentration-dependence interference in the present of foreign ions. Electrosorption cycle experiment manifested excellent stability of the biochar electrodes. The electrode was regenerated without consuming any chemicals and could produce current for energy recovery. More importantly, continuous-flow experiment showed that the removal efficiency of F − was 91.98% at the synthetic wastewater. High specific capacitance, low internal resistance and appropriate pore distribution were responsible for the F − removal mechanism. Overall, this work would pioneer a facile method in the preparation of low-price electrode material and their potential applications in environmental remediation.
研究领域:
环境工程
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材料科学
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水处理
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Longzhu Zheng,Hongqiang Li,Xuejun Lai,Wei Huang,Zengyue Lin,Xingrong Zeng
With the increasing environmental pollution caused by oily wastewater and oil spill accidents, many superwettable materials have been prepared and applied for the separation of oil-water mixtures. However, the fabrication of superwettable materials for multifunctional water purification including oil-in-water and water-in-oil emulsion separation, dyes degradation and heavy metal ions removal still remains challenging. Herein, we propose a facile method to fabricate a superwettable Janus nylon membrane through in situ generation of silver (Ag) particles immobilized by polydopamine and asymmetric chemical modification with dodecanethiol (NDM) and l -cysteine (L-cys) on the positive and negative surfaces, respectively. The positive surface modified by NDM exhibited superhydrophobicity and superoleophilicity, and the negative surface chemically bonded with L-cys possessed opposite wettability with superhydrophilicity and underwater superoleophobicity. The positive and negative surfaces of the Janus membrane were respectively applied for the separations of water-in-oil emulsions and oil-in-water emulsions, and the separation efficiencies all reached above 99%, also demonstrating great reusability and wide adaptability. In addition, the Janus membrane presented not only outstanding performance of degrading methylene blue (MB) with high efficiency above 97.3%, but also excellent capability of absorbing heavy metal ions in the process of emulsion separation. The fabrication processes are facile, mild, and no special equipment is involved, and our findings conceivably provided a new strategy to fabricate superwettable Janus membrane for multifunctional emulsion separation and wastewater purification.
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
高影响因子
危险品化学品经营许可证（带存储）