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学者姓名：李湘祁
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Abstract ：
Excellent photocatalytic performance and recyclability are crucial for the long-term use of the photocatalyst. In this study, 5 mol% Fe doped zinc oxide (ZF5), was freeze-dried with bacterial cellulose (BC)/sodium alginate (SA) solution to fabricate a novel composite aerogel capable of degrading methylene blue (MB) under visible light. Ca2+ crosslinking and hydrophobic modifications were adopted to strengthen the aerogel skeleton and enhance the cycling photocatalytic activity, meanwhile, making the aerogel floatable persistently. The influences of pH, ZF5 dosage, and initial solution concentration on MB degradation were investigated. Benefiting from the synergy between the components and the combined modification, the optimum composite aerogel exhibits photocatalytic efficiency of up to 97.4% at an initial MB concentration of 20 mg/L within an irradiation time of 80 min. In addition, it exhibits a degradation efficiency of 79.7% even after 8 cycles, showing great potential in visible-light-driven degradation of MB.
Keyword ：
Bacteria cellulose-based composite aerogel Bacteria cellulose-based composite aerogel Fe-doped ZnO Fe-doped ZnO Hydrophobic modification Hydrophobic modification Methylene blue Methylene blue Photocatalysis Photocatalysis
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| GB/T 7714 | Zhang, Xutao , Chen, Weiliang , Li, Xiangqi . Efficiently Recyclable Fe-Doped ZnO/Bacterial Cellulose-Based Composite Aerogel for Photocatalytic Degradation of Methylene Blue Under Visible Light [J]. | JOURNAL OF POLYMERS AND THE ENVIRONMENT , 2024 , 32 (9) : 4315-4329 . |
| MLA | Zhang, Xutao 等. "Efficiently Recyclable Fe-Doped ZnO/Bacterial Cellulose-Based Composite Aerogel for Photocatalytic Degradation of Methylene Blue Under Visible Light" . | JOURNAL OF POLYMERS AND THE ENVIRONMENT 32 . 9 (2024) : 4315-4329 . |
| APA | Zhang, Xutao , Chen, Weiliang , Li, Xiangqi . Efficiently Recyclable Fe-Doped ZnO/Bacterial Cellulose-Based Composite Aerogel for Photocatalytic Degradation of Methylene Blue Under Visible Light . | JOURNAL OF POLYMERS AND THE ENVIRONMENT , 2024 , 32 (9) , 4315-4329 . |
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The decaying photocatalytic rate caused by carrier recombination is a thorny problem that has not been properly solved. Improvement of photocatalysis can be achieved through structural innovation, diversification of catalytic modes, or a combination of both. Herein, effective separation of photo-generated carriers in Bi0·5Na0·5TiO3/ZnO composites was achieved by heterojunction construction for energy band regulation and synchronously mechanical energy harvesting from piezoelectric effect. The formation of heterojunctions between Bi0·5Na0·5TiO3 and ZnO was confirmed by electron microscopy and analysis of X-ray photoelectron spectroscopy spectra. The degradation performance of Rhodamine B, a representative industrial dye contaminant, was optimized through the formation of Bi0·5Na0·5TiO3/ZnO heterojunctions and ultrasonic vibration harvesting. Their band structures were described in detail and electrochemical tests were performed to substantiate a novel Z-scheme heterostructure that can explain the carrier separation and transfer processes in catalysis. The piezoelectric polarization field generated by the piezoelectric effect of both Bi0·5Na0·5TiO3 and ZnO coordinates perfectly with the photocatalysis, enabling the piezo-photocatalysis. Our research opens a promising avenue in alleviating charge carrier complexation through heterojunction construction and mechanical strain for future pollutants degradation via catalysis. © 2023 Elsevier Ltd
Keyword ：
Carriers transfer Carriers transfer Degradation Degradation Energy band configurations Energy band configurations Heterojunction Heterojunction Piezo-photocatalysis Piezo-photocatalysis
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| GB/T 7714 | Wang, P. , Cai, W. , Yu, F. et al. Bi0·5Na0·5TiO3/ZnO Z-scheme heterojunction for piezo-photocatalytic water remediation: Mechanical energy harvesting and energy band configuration [J]. | Chemosphere , 2023 , 338 . |
| MLA | Wang, P. et al. "Bi0·5Na0·5TiO3/ZnO Z-scheme heterojunction for piezo-photocatalytic water remediation: Mechanical energy harvesting and energy band configuration" . | Chemosphere 338 (2023) . |
| APA | Wang, P. , Cai, W. , Yu, F. , Zhou, P. , Lin, M. , Lin, C. et al. Bi0·5Na0·5TiO3/ZnO Z-scheme heterojunction for piezo-photocatalytic water remediation: Mechanical energy harvesting and energy band configuration . | Chemosphere , 2023 , 338 . |
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本发明公开了一种抗菌超疏水复合涂层及其制备方法，其是以二水乙酸锌、硝酸银和氢氧化钠为原料，采用简单的沉淀法，制备了掺Ag的ZnO粉体，然后使用硅烷改性剂对所得粉体进行疏水改性并原位生成(NH4)2C2O4，得到了疏水的(NH4)2C2O4/Ag‑ZnO复合粉体，再将其加入到环氧树脂和聚二甲基硅氧烷组成的混合胶液中，经喷涂获得所述抗菌超疏水复合涂层。本发明制备工艺简单，成本低廉，适合大规模生产，且制得的超疏水复合涂层具有优异的抗菌性、超疏水性和耐磨性，有着很好的应用前景。
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| GB/T 7714 | 李湘祁 , 逯丙尧 . 一种抗菌超疏水复合涂层及其制备方法 : CN202310032056.4[P]. | 2023-01-10 00:00:00 . |
| MLA | 李湘祁 et al. "一种抗菌超疏水复合涂层及其制备方法" : CN202310032056.4. | 2023-01-10 00:00:00 . |
| APA | 李湘祁 , 逯丙尧 . 一种抗菌超疏水复合涂层及其制备方法 : CN202310032056.4. | 2023-01-10 00:00:00 . |
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Bacterial cellulose (BC) aerogel has great potential in treating oil spill and organic pollutant. However, its inherent hydrophilicity and poor rigidity limit its practical application and recyclability. In this study, elastically compressible and high oil-absorbing aerogels were developed by freeze-drying aqueous suspensions with appropriate BC concentrations, followed by a chemical vapor deposition of methyltrimethoxysilane with ammonia as catalyst. The modified aerogel shows high water contact angle of 142 degrees and enhanced compression resistance. The effect of BC concentration on the absorption capacity and recyclability of aerogel has been investigated. The results show that the aerogel prepared with 0.3 wt% BC exhibits simultaneously high absorption capacity (121.8-284.1 g/g) and excellent recyclability. Futhermore, the aerogel could also separate chloroform-water mixture by gravity-driven filtration, giving the separation efficiency of 96.7%. Therefore, this economical green aerogel provides a feasible strategy for solving oil leakage in industry.
Keyword ：
Bacterial cellulose aerogel Bacterial cellulose aerogel Low cellulose concentration Low cellulose concentration Oil-water separation Oil-water separation Recyclable Recyclable
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| GB/T 7714 | Yan, Zhuofeng , Zhu, Kaixiao , Li, Xiangqi et al. Recyclable Bacterial Cellulose Aerogel for Oil and Water Separation [J]. | JOURNAL OF POLYMERS AND THE ENVIRONMENT , 2022 , 30 (7) : 2774-2784 . |
| MLA | Yan, Zhuofeng et al. "Recyclable Bacterial Cellulose Aerogel for Oil and Water Separation" . | JOURNAL OF POLYMERS AND THE ENVIRONMENT 30 . 7 (2022) : 2774-2784 . |
| APA | Yan, Zhuofeng , Zhu, Kaixiao , Li, Xiangqi , Wu, Xiao . Recyclable Bacterial Cellulose Aerogel for Oil and Water Separation . | JOURNAL OF POLYMERS AND THE ENVIRONMENT , 2022 , 30 (7) , 2774-2784 . |
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The synergistic piezo-photocatalysis with enhanced efficiency for degrading obstinate pollutants in wastewater is considered as an advanced way to ameliorate the global water contamination. In this work, we report a facile route to construct the Bi0.5Na0.5TiO3@Ag composite by photoreduction of AgNO3 to obtain Ag on Bi0.5Na0.5TiO3 nanoparticles. And the composite was used to degrade three representative pollutants, i.e. ciprofloxacin, methyl orange and mitoxantrone hydrochloride. Remarkably, for methyl orange solution with the initial concentration of 10 mg/L, the degradation rate constant of the composite reached 0.051 min(-1). H+ and center dot O-2(-) play a major role in this degradation process, verified by the radical quenching experiments. The absorption platform of Bi0.5Na0.5TiO3 was located in the UV region, after introducing Ag in the composite, the absorption region broadened to both UV and visible light, greatly promoting the response to light. Simultaneously, the induced piezo-potential by mechanical energy in Bi0.5Na0.5TiO3 hindered the carrier recombination, resulting in high -efficiency synergistic piezo-photocatalytic process. This work provides a paradigm to innovate both material and catalytic way for degrading multiple organic pollutants.
Keyword ：
BNT@Ag composite BNT@Ag composite Degradation Degradation Free radicals Free radicals Piezo-photocatalysis Piezo-photocatalysis Pollutants Pollutants
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| GB/T 7714 | Wang, Peng , Yu, Fangyuan , Chi, Yuan et al. Enhanced piezo-photocatalysis in Bi0.5Na0.5TiO3@Ag composite to efficiently degrade multiple organic pollutants [J]. | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2022 , 323 . |
| MLA | Wang, Peng et al. "Enhanced piezo-photocatalysis in Bi0.5Na0.5TiO3@Ag composite to efficiently degrade multiple organic pollutants" . | JOURNAL OF ENVIRONMENTAL MANAGEMENT 323 (2022) . |
| APA | Wang, Peng , Yu, Fangyuan , Chi, Yuan , Wu, Xiao , Lin, Mei , Lin, Cong et al. Enhanced piezo-photocatalysis in Bi0.5Na0.5TiO3@Ag composite to efficiently degrade multiple organic pollutants . | JOURNAL OF ENVIRONMENTAL MANAGEMENT , 2022 , 323 . |
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Recently, the lead-free piezoelectric material Bi0.5Na0.5TiO3 (BNT) has been adopted for piezo-catalysis and synergistic catalysis, such as piezo-photocatalysis. Nonetheless, the catalytic effect of single BNT is too weak to degrade multifarious contaminants. Here, BNT and multi-walled carbon nanotubes (MWCNTs) composite were prepared and the catalytic performance of BNT was prominently boosted by introducing MWCNTs as the electron capturer. Particularly, the degradation rate of Rhodamine B (RhB, a typical contaminant) could reach 90% within 30 min, with a high rate constant of 0.0805 min-1. The specific degradation pathway of RhB was analyzed. The formation of oxygen vacancies was confirmed by XPS analysis, and the vital role of oxygen vacancies in the separation of photo-generated carriers was elucidated. Meanwhile, the BNT/MWCNTs composites manifested stronger transient current response compared to single BNT under the action of light irradiation and ultrasonic vibration, respectively. According to impedance analysis, the composites exhibited lower carrier transport resistance. Eventually, the mechanism of enhanced piezo-photocatalysis was explained in detail. This study provides an effective route to break the shackle of carrier recombination and speed up the carrier transport in piezo-photocatalytic materials.
Keyword ：
BNT BNT Carriers Carriers Degradation Degradation MWCNTs MWCNTs Piezo-photocatalysis Piezo-photocatalysis
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| GB/T 7714 | Wang, Peng , Zhong, Shiqi , Lin, Mei et al. Signally enhanced piezo-photocatalysis of Bi0.5Na0.5TiO3/MWCNTs composite for degradation of rhodamine B [J]. | CHEMOSPHERE , 2022 , 308 . |
| MLA | Wang, Peng et al. "Signally enhanced piezo-photocatalysis of Bi0.5Na0.5TiO3/MWCNTs composite for degradation of rhodamine B" . | CHEMOSPHERE 308 (2022) . |
| APA | Wang, Peng , Zhong, Shiqi , Lin, Mei , Lin, Cong , Lin, Tengfei , Gao, Min et al. Signally enhanced piezo-photocatalysis of Bi0.5Na0.5TiO3/MWCNTs composite for degradation of rhodamine B . | CHEMOSPHERE , 2022 , 308 . |
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Composite phase change materials (CPCMs) play a key role in solar energy conversion and storage. However, it is difficult to efficiently utilize solar energy due to their inherent low thermal conductivity, low light absorption and the usual competitive nature between thermal conductivity and latent heat. In this work, novel CPCMs were developed by using TiO2 -TiC-C loaded expanded vermiculite (EVT) as a supporting matrix and lauric-myristicstearic eutectic mixture (LA-MA-SA) as a PCM. The EVT was further acidized (EVTa) to enhance its PCM absorbability. Owing to the high thermal conductive and light absorption nature of TiO2 -TiC-C nanocomposite, the prepared CPCMs exhibit efficient light-thermal energy conversion. The thermal conductivities of LA-MA-SA/EVT and LA-MA-SA/EVTa were 0.694 and 0.676 W/(m K), respectively. And the PCM content in LA-MA-SA/EVT and LA-MA-SA/EVTa were 64.5 and 70.6 wt%, respectively. Moreover, the feasibility of CPCM being a water heating source was experimentally confirmed. These novel CPCMs have good application prospect in low temperature solar-thermal installations, such as temperature adaptable greenhouse and water heating system.
Keyword ：
Expanded vermiculite Expanded vermiculite Form-stable composite PCMs Form-stable composite PCMs Light-thermal conversion Light-thermal conversion Thermal conductivity Thermal conductivity
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| GB/T 7714 | Zhang, Jiasheng , Wang, Zongming , Li, Xiangqi et al. Novel composite phase change materials with enhancement of light-thermal conversion, thermal conductivity and thermal storage capacity [J]. | SOLAR ENERGY , 2020 , 196 : 419-426 . |
| MLA | Zhang, Jiasheng et al. "Novel composite phase change materials with enhancement of light-thermal conversion, thermal conductivity and thermal storage capacity" . | SOLAR ENERGY 196 (2020) : 419-426 . |
| APA | Zhang, Jiasheng , Wang, Zongming , Li, Xiangqi , Wu, Xiao . Novel composite phase change materials with enhancement of light-thermal conversion, thermal conductivity and thermal storage capacity . | SOLAR ENERGY , 2020 , 196 , 419-426 . |
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Lauric acid (LA)/SiO2 shape-stabilized phase change materials (PCMs) were fabricated by a facile one-pot method involving co-hydrolysis and co-condensation process of tetraethylorthosilicate (TEOS) and methyltriethoxysilane (MTES). With increasing the volume ratio of MTES to TEOS, the surface of LA/SiO2 PCMs changed from hydrophilic to highly hydrophobic, and the melting latent heats decreased from 93.8 J/g to 60.3 J/g. These composite PCMs exhibited high thermal stability and effective storage of the latent heat, demonstrating suitable for applications in regulation and maintenance of temperature.
Keyword ：
Hydrophobic Hydrophobic Lauric acid Lauric acid Phase change materials Phase change materials Shape-stabilized Shape-stabilized Silica Silica
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| GB/T 7714 | Zhang, Ying , Zhang, Jiasheng , Li, Xiangqi et al. Preparation of hydrophobic lauric acid/SiO2 shape-stabilized phase change materials for thermal energy storage [J]. | JOURNAL OF ENERGY STORAGE , 2019 , 21 : 611-617 . |
| MLA | Zhang, Ying et al. "Preparation of hydrophobic lauric acid/SiO2 shape-stabilized phase change materials for thermal energy storage" . | JOURNAL OF ENERGY STORAGE 21 (2019) : 611-617 . |
| APA | Zhang, Ying , Zhang, Jiasheng , Li, Xiangqi , Wu, Xiao . Preparation of hydrophobic lauric acid/SiO2 shape-stabilized phase change materials for thermal energy storage . | JOURNAL OF ENERGY STORAGE , 2019 , 21 , 611-617 . |
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It is a practical route for taking advantage of the high binding force of epoxy resin to fabricate mechanically robust superhydrophobic surfaces. However, this kind of superhydrophobic surfaces is hard to be endowed with high transparency. Here, we developed transparent and durable superhydrophobic bilayer coatings containing hydrophobic silica particles on top and an epoxy resin bonding layer at the base via a simple approach with common apparatus and reagents. The transmittance of the coated glass at 550 nm is as high as 90.3%, close to the transmittance of 91.8% for the bare glass. The stabilities of these coatings were tested by sandpaper abrasion tests, simulated seawater immersion and heat treatment experiments. The results demonstrate the as-prepared superhydrophobic coatings have excellent self-cleaning ability, good mechanical strength, high chemical and thermal stabilities. Additionally, the method presented here can effectively reach a proper balance between high transparency and excellent durability. The self-cleaning superhydrophobic coatings are independent of the nature of the substrates and have great application potential in industry and real-life.
Keyword ：
Durable Durable Epoxy resin Epoxy resin Silica nanoparticles Silica nanoparticles Superhydrophobic Superhydrophobic Transparent Transparent
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| GB/T 7714 | Zhong, Minzhen , Zhang, Ying , Li, Xiangqi et al. Facile fabrication of durable superhydrophobic silica/epoxy resin coatings with compatible transparency and stability [J]. | SURFACE & COATINGS TECHNOLOGY , 2018 , 347 : 191-198 . |
| MLA | Zhong, Minzhen et al. "Facile fabrication of durable superhydrophobic silica/epoxy resin coatings with compatible transparency and stability" . | SURFACE & COATINGS TECHNOLOGY 347 (2018) : 191-198 . |
| APA | Zhong, Minzhen , Zhang, Ying , Li, Xiangqi , Wu, Xiao . Facile fabrication of durable superhydrophobic silica/epoxy resin coatings with compatible transparency and stability . | SURFACE & COATINGS TECHNOLOGY , 2018 , 347 , 191-198 . |
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A series of emission-tunable Ca3SiO4Cl2:Bi3+, Li+, Eun+(n =2, 3) (CSC:Bi3+, Li+, Eun+) phosphors have been synthesized via sol-gel method. The X-ray diffraction results indicate that the as-synthesized phosphors crystallize in a low temperature phase with the space group of P21/c. Energy transfer from Bi3+ to Eu3+/Eu2+ exists in CSC:Bi3+, Eu2+ phosphors. Under the excitation of 327 or 365 nm, the Ca2.98-ySiO4Cl2:0.01Bi(3+), 0.01Li(+), yEu(n+)(y=0.0001-0.002) phosphors show an intense green emission band around 505 nm, while under the excitation of 264 nm, three emission bands centered around 396 nm (Bi3+), 505 nm (Eu2+) and 614 nm (Eu3+) are observed and tunable colors from blue-violet to green or white are achieved in these phosphors by varying the content of Eu. White-light emission with the color coordinate(0.312, 0.328) is obtained in Ca2.978SiO4Cl2:0.01Bi(3+), 0.01Li+, 0.002Eu(2+)(n =2, 3). Based on these results, the as-prepared CSC:Bi3+, Eu2+, Eu3+ phosphors can act as color-tunable and single-phase white emission phosphors for potential applications in UV-excited white LEDs.
Keyword ：
Bi3+ Bi3+ Ca3SiO4Cl2 Ca3SiO4Cl2 Eun+ Eun+ Sensitization Sensitization Sol-gel process Sol-gel process
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| GB/T 7714 | Xie, Xiuzhen , Zhong, Minzhen , Li, Xiangqi et al. Red, green and blue-violet emission coexistence in white-light-emitting Ca3SiO4Cl2:Bi3+, Li+, Eu2+, Eu3+ phosphor [J]. | CERAMICS INTERNATIONAL , 2017 , 43 (2) : 1937-1942 . |
| MLA | Xie, Xiuzhen et al. "Red, green and blue-violet emission coexistence in white-light-emitting Ca3SiO4Cl2:Bi3+, Li+, Eu2+, Eu3+ phosphor" . | CERAMICS INTERNATIONAL 43 . 2 (2017) : 1937-1942 . |
| APA | Xie, Xiuzhen , Zhong, Minzhen , Li, Xiangqi , Wu, Xiao , Wei, Haiting . Red, green and blue-violet emission coexistence in white-light-emitting Ca3SiO4Cl2:Bi3+, Li+, Eu2+, Eu3+ phosphor . | CERAMICS INTERNATIONAL , 2017 , 43 (2) , 1937-1942 . |
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