CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Qibin Zhu,Long Chen,Yun Da
The Calcium looping thermochemical reaction directly driven by solar energy effectively addresses the problem of efficient energy storage of concentrated solar power plants (CSP) by shortening the energy conversion path. But new requirements are put forward for energy storage materials, including high solar radiation absorption, high cycling stability and fast kinetics. To meet these challenges, we have designed porous microsphere structures for the purpose of enhancing mass transfer and the capture of solar radiation. Additionally, Zr and Mn oxides with elevated Tammann temperatures were incorporated to stabilize the morphology and prevent sintering. The synthesized porous microspheres retained abundant mesoporous channels on the surface even after undergoing 20 cycles. The addition of Mn oxide significantly enhances solar spectral absorptivity, achieving an impressive 82.88 % absorbance. The incorporation of Mn and Zr oxides increased the sintering resistance, specific surface area and porosity of CaO/CaCO 3 , especially in the 10–100 nm range, which accelerated the CO 2 transport during carbonation. These enhancements significantly improve the chemical control stage of the carbonation reaction, as further supported by kinetic models. After 50 cycle experiments at 800 °C, the energy storage density of the sample remains at 1074 kJ/kg, which is 1.86 times that of the undoped CaCO 3 . This study provides a new way to design CaCO 3 materials suitable for CSP applications.
研究领域:
材料科学
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可再生能源
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Rongrong Du,Hongyang Zhu,Shuo Wang,Hongyao Zhao,Mengting Liu,Yanyun Wang,Yiyan Song,Fu Yang
Photothermal nanomaterials have showed great potential for development in simultaneous pollutant purification and freshwater recovery. In this study, a novel composite composed of hollow N-doping SiC porous hybrid network with the integration of CoCu bimetal species was constructed by a simple self-assembly and temperature-modulated approach. Such a hollow porous hybrid nanoreactor is endowed with abundant synergetic CuCo bimetallic reactive sites and polar pyrrolic N sites, which improves the enrichment of pollutants and intermetallic redox pairs. Ultrafine nanocrystals corresponding to Co 2 SiO 4 over the hybrid framework can be evidenced by HRTEM technique. The experimental results showed that the optimal CoSiCu-6 degraded norfloxacin (NFX) by 90.7% in 10 min with a pseudo-first-order rate constant of 0.493 min −1 , which was about 6.49 folds enhancement compared to Cu-free CoSi-6 counterparts, achieving a low reaction activation energy (18.02 kJ mol −1 ) during the reaction. Control experiments including anion interference and broad applicability for pollutants degradation were further explored, emphasizing the excellent performance of CoSiCu-6 in the practical contaminant removal. The mechanism study showed that, single linear oxygen ( 1 O 2 ) coupled with electron-transfer process work as the main activation routes dominating the degradation process. In addition, Co 3+ /Co 2+ /Cu 2+ redox pairs and oxygen vacancies (O v ) play a key role in the PMS activation process. The obtained optimal catalyst was further explored for solar-driven photothermal interfacial water evaporation, showing a rational cleanwater recovery efficiency (∼1.3 kg m −2 h −1 ) from the polluted wastewater. In addition, monolith floatable evaporator was constructed by anchoring CoSiCu-6 onto a tailored melamine sponge foam via a calcium ion-triggered sodium alginate cross-linking strategy, affording an excellent evaporation performance (2.16 kg m −2 h −1 ) and coupled norfloxacin degradation efficiency (93.6%, within 5 min). This innovative monolithic evaporator made of CoCu integrated SiC hybrid nanosphere has a powerful dual function of rapidly degrading pollutants and facilitating solar-powered regeneration of contaminated wastewater due to its unique hollow porous structure and the CoCu bimetallic synergistic action that provides a rich set of reaction sites, which is promising for the treatment of complicated wastewater.
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
ACS ES&T Engineering
·
2025
·
IF 6.7
Shuai Peng,Longqian Xu,Shihai Deng,Chengsi Hou,Yue Wang,Zuofeng Chen,Zhendong Lei,Deli Wu
Flexible water management textiles can achieve effective liquid-thermal evaporation by harvesting exogenous heat. However, existing textiles exhibit limited evaporation capacity and cooling efficiency due to undesirable water-heat transport structures. Inspired by the human skin’s efficient heat dissipation mechanism through sweat evaporation, we propose an integrated multiheat source evaporation module concept. The interpenetrating structure of disperse fibers and porous conductive pores endows this material with synergistically enhanced radial water diffusion rate and thermal energy transmission efficiency, as validated by the infrared droplet diffusion tests and solute diffusion models. Compared to traditional nonwoven fabric, the integrated evaporation module-3 exhibits stable and lower “rebound low temperature values” in 120 consecutive evaporation cycles, with a peak temperature difference of 5.43 °C. The performance efficiency per unit of water evaporation is increased by over 100%, and the thermal diffusion coefficient along the thickness gradient is increased by 20 times. By integrating reduced graphene oxide photothermal conversion media, the device is entirely driven by solar thermal energy, achieving an evaporation rate of ∼1.45 kg m–2 h–1. Notably, dynamic temperature difference tracking tests validate the potential of this integrated structure in solar-driven multistage passive evaporation systems and its flexibility for deployment on complex heater surfaces (such as human skin). We anticipate that the integrated module concept will provide promising design guidelines for next-generation high-efficiency multiheat source management components.
CAS / MDL:
研究领域:
材料科学
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热能工程
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纺织科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Renjie Ding,Jinhua Xiong,Qian Yan,Pengyang Li,Xu Zhao,Zhong Chen,Zonglin Liu,Huanxin Lian,Zhigong Tang,Shanyi Du,Qingyu Peng,Xiaodong He
Solar-driven water purification has become a promising way to overcome the freshwater crisis because of its environmentally-friendly features. Improving the evaporation rate and evaporation efficiency are eternal topics. In this work, we redesign the solar-driven vapor generation (SVG) device and a unique in-plane temperature gradient is established due to the oriented water transportation. The input energy is maximized and the superb evaporation rate of 6.40 kg m −2 h −1 with an efficiency of 243.8 % is achieved. By investigating the hydration state in NaCl solution and aqueous acid, the interaction mechanism between hydrated ions and non-woven fabrics is developed. Owing to the increased intermediate water proportion, the evaporation rate of the SVG device in 5 wt% NaCl solution can reach 6.38 kg m −2 h −1 , which is almost the same as that in DI water. Moreover, the unique reversible doping properties make the non-woven fabrics a reusable and stable volatile acid purifier. The evaporation rate in pH = 4.0 aqueous acid can be enhanced to 6.75 kg m −2 h −1 , while the generated water maintains a pH higher than 6.5. Our work provides a new perspective for designing high-efficiency and multifunctional SVG devices.
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
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
·
IF 9.4
Xin Xiong,Naila Arshad,Junyang Tao,Najah Alwadie,Gang Liu,Liangyou Lin,M.A.K Yousaf Shah,Muhammad Sultan Irshad,Jingwen Qian,Xianbao Wang
Desalination processes frequently require a lot of energy to generate freshwater and energy, which depletes resources. Their reliance on each other creates tension between these two vital resources. Herein, hierarchical MXene nanosheets and bismuth vanadate (Ti 3 C 2 /BiVO 4 )-derived microcapsules were synthesized for a photothermal-induced photoredox reaction for twofold applications, namely, solar-driven water evaporation and hydrogen (H 2 ) production. For this purpose, flexible aerogels were fabricated by introducing Ti 3 C 2 /BiVO 4 microcapsules in the polymeric network of natural rubber latex (NRL-Ti 3 C 2 /BiVO 4 ), and a high evaporation rate of 2.01 kg m −2 h −1 was achieved under 1-kW m −2 solar intensity. The excellent performance is attributed to the presence of Ti 3 C 2 /BiVO 4 microcapsules in the polymeric network, which provides balanced hydrophilicity and broadband sun absorption (96 %) and is aimed at plasmonic heating with microscale thermal confinement tailored by heat transfer simulations. Notably, localized plasmonic heating at the catalyst active sites of the Ti 3 C 2 /BiVO 4 heterostructure promotes enhanced photocatalytic H 2 production evolved after 4 h of reaction is 9.39 μmol, which is highly efficient than pure BiVO 4 and Ti 3 C 2 . This method turns the issue of water–fuel crisis into a collaborative connection, presenting avenues to collectively address the anticipated demand rather than fostering competition.
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
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Yue Hu,Zhou Fang,Xinyi Wan,Xu Ma,Shilin Wang,Shuaikang Fan,Mengyang Dong,Zhizhen Ye,Xinsheng Peng
High equilibrium uptake capacity and rapid adsorption/desorption kinetics are essential to achieve efficient atmospheric water harvesting. In this work, carbon nanotubes decorated hollow MIL-101(Cr) particles (HMC-2) are prepared and utilized for solar-driven atmospheric water harvesting with nice water adsorption capacity and fast kinetics. The hierarchical porous hollow MIL-101(Cr) particles formed by post-etching show highly active defect sites and low mass transfer resistance, which promotes the adsorption and diffusion of water molecules. The resulted HMC-2 demonstrates a maximum water uptake of 1.074 g/g at 25 °C, 90% RH. Notably, the water adsorption capacity of HMC-2 in low humidity (40% RH) are increased by 113% and 202.6% compared to pure MIL-101(Cr) and carbon nanotubes decorated MIL-101(Cr). Due to the synergistic effect of CNTs and hollow MIL-101(Cr), the HMC-2 composites generate sufficient solar thermal heat and improve the desorption kinetics. The maximum adsorbed water of HMC-2 can be completely desorbed within 90 min under one sunlight. A single cycle of sorption–desorption of HMC-2 can be achieved within 210 min. This means that if the water harvesting cycle is performed three times daily, it is possible to harvest 3.22 L of water per kilogram of adsorbent at the area with high humidity. The water uptake and release rates of HMC-2 are competitive with even superior to most those reported. This may demonstrate a promising potential for atmospheric water generators.
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
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2021
·
IF 3.995
Zhiyu Liu,Jianhe Tang,Congcong Piao,Xing Zhang,Xiaochen Qi,Ying Tian,Dawei Fang,Jun Wang
A novel Z-scheme CaF 2 :Yb 3+ ,Er 3+ @ZnTiO 3 /Au/CdS photocatalyst has been prepared. In this system, an excellent up-conversion luminescent agent, CaF 2 :Yb 3+ ,Er 3+ , is introduced to broaden the light response range. The Au surface plasmon resonance effect endows the system with highly efficient charge transfer. The photocatalytic activity of the Z-scheme CaF 2 :Yb 3+ ,Er 3+ @ZnTiO 3 /Au/CdS photocatalyst has been evaluated in the degradation of norfloxacin (NOR) with simultaneous hydrogen production . Some influencing factors, such as solar light irradiation time, sacrificial agent concentration, and number of reuse cycles, are discussed. The emission spectrum and energy conversion mechanism of CaF 2 :Yb 3+ ,Er 3+ have also been studied. The prepared photocatalyst facilitated a significant degree of degradation (92.05%) of NOR and considerable hydrogen production (513.39 μmol/g) under solar light irradiation for 5.0 h. Moreover, it showed high stability in photocatalytic NOR degradation with simultaneous hydrogen production over five cycles. A possible mechanism for photocatalytic degradation of NOR with simultaneous hydrogen production promoted by the Z-scheme CaF 2 :Yb 3+ ,Er 3+ @ZnTiO 3 /Au/CdS photocatalyst is proposed.
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
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 32
·期 15
·2110636
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IF 18.808
Xiao-Peng Li,Xiaofeng Li,Heguo Li,Yue Zhao,Jing Wu,Shouke Yan,Zhong-Zhen Yu
Although many solar-driven water evaporators are developed for solar steam generation, most solarthermal energy conversion materials cannot be used repeatedly for constructing solarthermal water evaporators with variable shapes and patternable surfaces. Herein, reshapable Ti 3 C 2 T x MXene/graphene oxide (GO)/polyaniline (PANI) (MGP) hybrids with variable shapes and patternable surfaces are fabricated by PANI-assisted assembly of GO and MXene for efficient solar-driven purifications of both seawater and wastewater. The variable shapes, patternable surfaces, and reusability of the plastic MGP hybrids are attributed to the strong interactions of PANI with both GO and MXene. Benefiting from the excellent solarthermal energy conversion of hydrophilic GO and MXene, the variable shapes and patternable surfaces of the MGP, and the reduced water vaporization enthalpy, the patternable MGP evaporators with flat and concave pyramid surfaces exhibit average water evaporation rates of as high as 2.89 and 3.30 kg m −2 h −1 under 1-sun irradiation, respectively. When the plastic MGP is molded to a flower-shaped evaporator, an outstanding evaporation rate of ≈3.94 kg m −2 h −1 with an exceptional evaporation efficiency of ≈135.6% is achieved under 1-sun irradiation. The reusable MGP evaporators are highly efficient in generating clean water from both seawater and wastewater with satisfactory ion rejection rates of nearly 100%.
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
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Ming-Hong Sun,Changjun Li,Ji Liu,Peng Min,Zhong-Zhen Yu,Xiaofeng Li
Although significant advances have been achieved in developing solar-driven water evaporators for seawater desalination, there is still room for simultaneously enhancing water evaporation efficiency, salt resistance, and utilization of solar energy. Herein, for the first time, we demonstrate a highly efficient three-dimensional (3D) mirror-assisted and concave pyramid-shaped solar–thermal water evaporation system for high-yield and long-term desalination of seawater and brine water, which consists of a 3D concave pyramid-shaped solar–thermal architecture on the basis of polypyrrole-coated nonwoven fabrics (PCNFs), a 3D mirror array, a self-floating polystyrene foam layer, and a tail-like PCNF for upward transport of water. The 3D concave pyramid-shaped solar–thermal architecture enables multiple solar light reflections to absorb more solar energy, while the 3D mirror-assisted solar light enhancement design can activate the solar–thermal energy conversion of the back side of the concave pyramid-shaped PCNF architecture to improve the solar–thermal energy conversion efficiency. Crucially, selective accumulation of the precipitated salts on the back side of the concave pyramid-shaped architecture is realized, ensuring a favorable salt-resistant feature. The 3D mirror-assisted and concave pyramid-shaped solar-driven water evaporation system achieves a record high water evaporation rate of 4.75 kg m–2 h–1 under 1-sun irradiation only and exhibits long-term desalination stability even when evaporating high-salinity brine waters, demonstrating its great applicability and reliability for high-yield solar-driven desalination of seawater and high-salinity brine water.
研究领域:
能源科学
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环境工程
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Jiacheng Yu,Changqian Cao,Yongxin Pan
Membrane separation techniques are promising methods for effectively treating hazardous emulsified oily wastewater, but membrane fouling remains a serious challenge because the high viscosity and complex composition of crude oil make it easy to adhere to membranes and difficult to be removed by conventional physical or chemical cleaning means. Herein, a two-stage solar-driven (photo-Fenton degradation/evaporation) strategy was proposed to realize the self-cleaning of membranes fouled by viscous crude oil (>60,000 mPa s), wherein the photo-Fenton process helped to degrade the heavy components into light components, and all light components removed during the solar-driven evaporation process. A 1D/2D heterostructure membrane with photo-Fenton activity and anti-crude-oil-fouling performance was prepared via a facile self-assembly vacuum-assist method. The addition of rod-like g-C 3 N 4 (RCN) increased the interlayer distance of α-FeOOH/porous g-C 3 N 4 (FPCN) nanosheets , resulting in a high permeation flux. The FPCN–RCN membrane exhibited both high permeation flux of 779 ± 19 L m –2 h –1 bar –1 and a separation efficiency of 99.4% for highly viscous crude oil-in-water emulsion. Importantly, the viscous crude oil fouled on the membrane was completely removed by the photo-Fenton degradation/solar-driven evaporation strategy, and the flux recovery rate of the membrane was ∼100%. Therefore, the FPCN–RCN membrane combined with the novel self-cleaning strategy exhibits great potential for practical emulsified oily wastewater treatment .
研究领域:
环境科学
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Xiang Xue,Di Gu,Yuwei Qin,Xue Lin,Qi Cui,Zixuan Li,Rui Mu,Hong Jiang,Tingting Jiang,Hongjun Wu,Baohui Wang
Herein, a solar-driven, CO 2 -fed rechargeable molten salt carbon battery is reported, which has the characteristics of capacity-tunable and noble metal catalyst-free, and continuously captures CO 2 and converts it into fuel (CO). The battery uses mixed molten carbonate as the electrolyte, which has excellent reversible electrode kinetics and superior ionic conductivity , providing the rechargeable molten salt battery excellent storage capacity and power capability. The battery is capable of continuously absorbing CO 2 from the atmosphere and converting it into carbon and carbon monoxide when it is charged. The carbon accumulates at the cathode and is used to discharge, thus producing carbon monoxide, constituting a battery capable of continuously converting carbon dioxide into carbon monoxide and storing electrical energy. The battery is perfectly matched to solar thermal and solar electricity and can be used as a novel method of storing solar energy. This paper investigates the battery performance under four electrolyte conditions. The results show that the battery has the most superior discharge performance when using a Li-Na-K-Cs-Li 2 O mixed electrolyte, maintaining ultra-high faradaic efficiency (100%) for 20 cycles. This work provides a new horizon for CO 2 conversion and solar energy utilization.
研究领域:
能源科学
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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
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Xingzhen Zhang,Shouyong Zhou,Zhigang Wang,Xian Wei,Shenxiang Zhang,Jian Jin
Hydrogel-based evaporators are a promising strategy to obtain freshwater from seawater and sewage. However, the time-consuming and energy-consuming methods used in hydrogel preparation, as well as their limited scalability, are major factors that hinder the development of a hydrogel-based evaporator. Herein, a facile and scalable strategy was designed to prepare a hydrogel-coated evaporator to realize efficient solar-driven water evaporation. The hydrogel coating layer is composed of a robust 3D network formed by tannic acid (TA) and poly(vinyl alcohol) (PVA) through a hydrogen bond. With the assistance of TA surface modifier, carbon black (CB) is uniformly distributed within the hydrogel matrix, endowing the coating with remarkable photothermal properties. In addition, Fe3+ is deposited on the surface of the hydrogel coating through metal coordination with TA, further improving the light absorption of the coating. Due to the synergistic effect of CB and Fe3+, the hydrogel-coated foam exhibited excellent photothermal properties. The water evaporation rate reached 3.64 kg m–2 h–1 under 1 sun irradiation. Because of the hydration ability of PVA hydrogel and the large porous structure of the foam, the hydrogel-coated foam demonstrated excellent antifouling performance and salt resistance. This study provides a facile method for designing and manufacturing high-performance solar-driven water evaporation materials.
研究领域:
材料科学
·
环境科学
✓ 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）