JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2023
·Vol. 106
·期 8
·4785-4793
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IF 3.9
Dafeng Zhang,Ruiqi Zhang,Junchang Liu,Xipeng Pu,Peiqing Cai
Photocatalytic H 2 evolution technique has been proved to be one of the promising approaches to overcome the present energy and environmental issues caused by the combustion of fossil fuel. Constructing heterojunction can realize the efficient separation and migration of charges and thus achieve enhanced H 2 evolution performance. Herein, we designed and prepared a ZnIn 2 S 4 /BiFeO 3 heterojunction photocatalyst with a 3D/2D structure via an ultrasonic self-assembly process. The typical 3D/2D structure with intimate interface was obtained, which not only provided more active sites but also boosted the migration of photogenerated charges. The optimal mass ratio of BiFeO 3 in ZnIn 2 S 4 /BiFeO 3 was determined to be 10%, and a 10.5-fold increase in H 2 evolution rate in comparison with of pure ZnIn 2 S 4 was achieved. Furthermore, the ZnIn 2 S 4 /BiFeO 3 composite exhibited excellent recyclability and structural stability based on cycling experiment. A S-scheme heterojunction mechanism was revealed according to the experimental results of photocatalytic H 2 evolution and electrochemical tests.
研究领域:
材料科学
·
能源与环境科学
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DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2015
·Vol. 26
·期 9
·6563-6571
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IF 1.569
Lu Tianxing,You Jing,Zhao Dan,Wang Hua,Miao Yanqin,Liu Xicheng,Xiao Yin,Li Xianggao,Wang Shirong
Three s -triazine/carbazole based bipolar molecules: 9,9′,9″-(1,3,5-triazine-2,4,6-triyl)tris(3,6-di- tert -butyl-carbazole) (TazTCz), 9,9′-(6-phenyl-1,3,5-triazine-2,4-diyl)bis(3,6-di- tert -butyl-carbazole) (PhTazDCz) and 9-(4,6-diphenyl-1,3,5-triazine-2-yl)-3,6-di- tert -butyl-carbazole (DPhTazCz) were synthesized and applied as host materials for blue phosphorescent organic light-emitting diodes (PHOLEDs). The triplet state energy levels are ~2.86 eV for these compounds, ensured their application in blue PHOLEDs. X-ray single crystal structural analysis revealed a non-planar structure of TazTCz, which prevented the intermolecular close-packing in the solid state. X-ray diffraction spectra also confirmed that TazTCz and PhTazDCz could form amorphous films with spin-coating method. The bipolar characteristics of as-synthesized compounds were confirmed by carrier mobility measurement. The device parameters of blue PHOLEDs based on these compounds as host materials exhibit that the balance of electron and hole mobilities is benefit for reducing turn-on voltage and efficiency roll-off at high current density.
研究领域:
材料科学
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有机电子学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2022
·Vol. 10
·期 47
·25279-25294
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IF 14.511
Linlin Sun,Xiaoshuo Liu,Xiaohan Jiang,Yibing Feng,Xunlei Ding,Nan Jiang,Jigang Wang
Inadequate accessible active sites and inhibited electron separation efficiency are always burning issues. This work successfully solves the above problems by constructing a novel S-scheme heterojunction with S–C bonds bridging composed of hierarchical g-C3N4 (3DA-CN) coupled with sulfur vacancies (Sv) ZnIn2S4 (Sv-ZIS/CN). The special structure provides more active sites for the photocatalytic reaction and maintains multiple light transmission channels, resulting in the improvement of the capture and conversion of solar energy. The interfacial electric field and S–C bonds as well as their effects benefiting the regulation of the efficiency of electrons transfer for efficient photocatalytic reactions are deeply investigated and comprehended. The tetracycline degradation efficiency of Sv-ZIS/CN reaches 96.36% and has the highest k value (0.03361 min−1), which is 7.55, 5.47 and 3.04 times that of 3DA-CN, Sv-ZIS and ZIS-S/CN (prepared by a mechanical approach), respectively. Meanwhile, H2O2 production experiments also verified that the photocatalytic activity of Sv-ZIS/CN was significantly improved compared with ZIS-S/CN. The mechanisms of tetracycline degradation and H2O2 production are discussed in depth. This work provides an unparalleled and impressive strategy to construct significantly efficient photocatalysts.
研究领域:
材料科学
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环境科学
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化学工程
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DOI
高影响因子
Processes
·
2022
·Vol. 10
·期 7
·1359
·
IF 3.352
Xiaoyu Huo,Chao Jia,Shanshan Shi,Tao Teng,Shaojie Zhou,Mingda Hua,Xiangdong Zhu,Shicheng Zhang,Qunjie Xu
Potassium thiocyanate (KSCN), a highly efficient “three birds with one stone” activator, might work with inorganic activators to produce excellent N/S co-doped porous carbon (NSC) materials for environmental remediation. However, the effects of inorganic activators on cooperative activation are unclear. As a result, the influence of inorganic activators on the synthesis of NSC materials was investigated further. This study shows that the surface areas of the NSC materials acquired through cooperative activation by potassium salts (KOH or K2CO3) were considerably higher than those acquired through KSCN activation alone (1403 m2/g). Furthermore, KSCN could cooperate with K2CO3to prepare samples with excellent specific surface area (2900 m2/g) or N/S content. The as-prepared NSC materials demonstrated higher adsorption capability for chloramphenicol (833 mg/g) and Pb2+(303 mg/g) (pore fitting, complexation). The research provides critical insights into the one-step synthesis of NSC materials with a vast application potential.Keywords:N/S co-doping;porous carbon;chloramphenicol adsorption;Pb2+removal
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
Petroleum Science
·
2024
·
IF 6
Wei-Peng Wu,Min Yang,Dong-Chen Ma,Ji-Rui Hou,Tuo Liang,Ming Qu,Tao Tan,Biao Yang,Guo-Rui Ma
In-depth profile control is a crucial technique employed to enhance oil recovery in fractured-vuggy carbonate reservoirs. However, it is a challenge to achieve in-depth profile control. In this paper, two types of organic gel systems, namely s-MPG and MSRG, tailored for fractured-vuggy reservoirs with 140 °C and 22 × 10 4 mg/L have been developed. FTIR was used to analyze the functional groups of s-MPG and MSRG. Additionally, the quality retention rates of s-MPG and MSRG were assessed using TG-DSC, yielding results of 92.85% and 92.65%, respectively. The dilution rates of s-MPG and MSRG are found to be 18.69% and 26.69%, respectively, demonstrating excellent compatibility and adaptability. The enhancement performance depends on the synergistic effect that the anti-dilution s-MPG effectively separates bottom water, while high-strength MSRG separates the oil layer. Moreover, the EOR performances of s-MPG synergy with MSRG in various types of fractured-vuggy carbonate models were also evaluated. The highest oil recovery of 12% is achieved in fracture network model. Laboratory results indicate that the synergistic combination of s-MPG and MSRG for water plugging in fractured-vuggy carbonate reservoirs results in a more effective enhancement of oil recovery compared to using a single gel system for plugging. Finally, the s-MPG synergy with MSRG has been applied in actual fractured-vuggy carbonate reservoirs. As expected, the water cut of typical well is reduced from 100% to 30% and the increased oil production is 1142 t totally. Therefore, this study presents a novel approach to achieving in-depth profile control by leveraging the synergistic effect of s-MPG with MSRG in fractured-vuggy carbonate reservoirs.
研究领域:
石油工程
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化学工程
✓ 已验证
DOI
高影响因子
RSC Advances
·
2025
·Vol. 15
·期 11
·8541-8552
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IF 4.6
Hui Zhang,Yi Hui Sun,Sheng Li An,Rui Hua Guo,Rui Fen Wang,Yu Wei Ma
S-type heterojunction photocatalysts (CeCux-BTC/CN) of cerium-copper bimetallic organic framework (CeCux-BTC) and graphitic carbon nitride (g-C3N4) were constructed by a simple solvothermal method using cerium nitrate, copper nitrate, and urea as the raw materials, and 1,3,5-benzene-tricarboxylic acid as the ligand for the photocatalytic CO2 reduction to CO and CH4. The results show that the built-in electric field constructed by Fermi energy level flattening transfers the electrons in an S-type manner, which not only preserves the strong reducing properties of the electrons in the material but also provides the maximum redox capacity and enables the composite samples to obtain higher visible-light trapping capacity and improve the separation efficiency of the carriers while refining the crystal particles. With the addition of only 1 mL of H2O as the proton supply source, CeCu0.05-BTC/CN exhibits the optimal photocatalytic performance. The CO and CH4 yields were 64.44 and 0.5575 μmol g−1, which were 7.56 and 2.42 times higher than those of g-C3N4, respectively, and the catalytic performances were basically stable after cycling tests.
研究领域:
材料科学
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环境科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Huarui Han,Songbai Zhang,Shushan Song,Weijie Zhang,Dandan Liu,Ziheng Song,Qianyu Wang,Changchang Ma,Sheng Feng,Xuemei Duan
In this study, a new type of 2D/2D Bi 2 O 3−x /NiAl-LDH (BO/NA-LDH) S-scheme photocatalyst was prepared by combining NiAl-LDH with Bi 2 O 3−x by wet chemical deposition for obtaining efficient photothermal-assisted photocatalytic reduction of CO 2 under simulated sunlight irradiation. In particular, the as-prepared optimal 50-BO/NA-LDH sample exhibited the CO production yield of 83.55 ± 2.76 μmol/g/h, which was 9 and 27 times that of BO (9.32 ± 0.62 μmol/g/h) and NA-LDH (3.09 ± 0.38 μmol/g/h), respectively. The enhancement of photothermal-assisted activity over the 50-BO/NA-LDH system was mainly attributed to the coupling of the photothermal conversion performance of Bi 2 O 3−x and improving the migration efficiency of interface carriers of S-scheme heterojunction and 2D/2D structure. This study presents a promising strategy for the development of high-efficient photothermal-assisted photocatalysts.
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
npj Science of Food
·
2025
·Vol. 9
·期 1
·1-9
·
IF 7.8
Liu Kai,Lian Yinyin,Xie Xingyun,Gao Yuyang,Song Jiajia,Suo Huayi,Zhang Yu
This study investigates the impact of O. oeni on the quality of blueberry wine, employing various analytical methods to determine parameters such as alcohol content, antioxidant capacity, organic acids, amino acids, and volatile components. The results demonstrated that co-inoculation with O. oeni significantly decreased the titratable acidity of blueberry wine. Among the organic acids, the malic acid content of ST and SE groups decreased by (26.24 ± 1.24)% and (35.75 ± 4.02)%, respectively. The main consumed amino acids were aspartate, lysine, and arginine after co-inoculation with O. oeni . Additionally, co-inoculation with O. oeni significantly increased the content of medium-chain fatty acid ethyl esters, especially isoamyl acetate content. The antioxidant capacity of blueberry wine was significantly enhanced by co-inoculation with O. oeni , particularly in terms of measurement of 1,1-diphenyl-2-picryl-hydrazyl (DPPH) clearance. The findings of this study provide a solid basis for improving the quality of blueberry wine and promoting the growth of blueberry wine industry.
研究领域:
食品科学
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微生物学
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产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 44
·21065-21077
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IF 3.925
Zhenlu Liu,Jing Xu,Jiandong Wu,Ye Liu,Lijun Ma,Linying Hu
Photocatalysis is one of the most promising methods to solve the problems of solar energy conversion and sustainable fuel production. Among them, the semiconductor electronic transition to produce hydrogen is the most critical research topic in the field of photocatalysis. ZnS and Ag2Mo2O7 monomers were prepared by the hydrothermal method. The S-scheme heterojunction was formed by electrostatic adsorption of the two materials. The S-scheme heterojunction can improve the separation rate of photogenerated carriers through the built-in electric field so that the hydrogen production rate of the system can reach a maximum of 871.9 μmol g−1 h−1. The system showed a good photoelectric response according to UV-Vis DRS and electrochemistry studies and excellent hydrogen evolution performance. In this study a DFT simulation of the heterojunction interface formed by the system was also carried out, and the relative size of the surface work function indicated the transfer direction and path of electrons.
研究领域:
材料科学
·
能源科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Hongxia Liu,Minggang Zhang,Zhipeng Jin,Hui Mei,Gangqiang Zhu,Longkai Pan,Laifei Cheng,Litong Zhang
Photocatalysis is recognized as one of the most promising techniques for environment purification. However, the inconvenient recovery of powder photocatalysts significantly impeded their practical applications. Immobilization of the photocatalysts on supports to form monolithic photocatalysts is an effective method to solve this problem. Herein, a monolithic photocatalyst Bi 12 TiO 20 /Bi 4 Ti 3 O 12 /SiOC is fabricated by growing optimal Bi 12 TiO 20 /Bi 4 Ti 3 O 12 S-scheme heterojunction onto 3D-printed porous SiOC support. On one side, S-scheme heterojunction facilitates the separation of photoinduced electrons and holes while retaining their strong redox ability. On the other side, the porous structure favors mass transport and improves light harvesting by reflecting the light several times. Under simulated solar light irradiation, the NO removal efficiency of the monolithic photocatalyst Bi 12 TiO 20 /Bi 4 Ti 3 O 12 /SiOC is 16.4 %. Furthermore, the composite has good stability and reusability, suggesting its great potential in practical application. The possible photocatalytic mechanism is proposed according to systematic experiments and density functional theory (DFT). This work provides a rational reference for constructing efficient photocatalysts for environmental purification.
研究领域:
环境科学
·
材料科学
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产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2023
·Vol. 13
·期 24
·7046-7058
·
IF 5
Wei Jin,Dekang Liu,Liyuan Zhang,Qian Sun,Yishan Wang,Enzhou Liu,Xiaoyun Hu,Hui Miao
Titanium dioxide (TiO2), a conventional n-type semiconductor, was widely used in photocatalysis, electrocatalysis and photoelectrocatalysis due to its good UV absorption and stable physical and chemical properties. However, its wide band gap and low oxygen reaction (OER) activity limited its application in photoelectrochemical (PEC) water splitting. In this work, we successfully constructed type-II Sb2(S,Se)3@TiO2 core–shell heterojunctions. Antimony sulfide selenide (Sb2(S,Se)3) was a quasi-one-dimensional light-absorbing material with an adjustable band gap (1.1–1.8 eV), which broadened the TiO2 light absorption range and effectively promoted the photogenerated carrier separation, transportation and utilization. Of particular note, novel Sb2(S,Se)3 nanospheres (NSPs) (ca. 69 nm) were in situ grown inside the tubes attributed to the unique space-confinement effect of TiO2 nanotubes (NTs). The IPCE value for Sb2(S,Se)3@TiO2 at 734 nm was 10.808% compared to 0.030% for TiO2. The separation efficiency and injection efficiency increased from 2.48% and 31.62% to 4.90% and 36.48%, respectively. The onset potential was moved negatively by 60 mV, and the maximum photocurrent density of 1.53 mA cm−2 at 1.23 V vs. RHE was 13.9 times higher than that of TiO2 (0.11 mA cm−2). This work provided a new idea for the application of TiO2 in the field of PEC water splitting.
研究领域:
材料科学
·
能源科学
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产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2024
·Vol. 53
·期 7
·3215-3223
·
IF 3.5
Yue-Chen Chen,Yi-Ming Di,Shu-Quan Zhang,Mei-Jin Lin
As an emerging class of hybrid complexes, donor–acceptor (D–A) hybrid heterostructures, which combine the advantages of both organic and inorganic photoactive components, provide excellent platforms for the fabrication of photochromic materials with enhanced photo-responsive performances. Herein, four novel hybrid heterostructures, namely H3TPT·(PW12O40)·2NMP (1), (H1.5TPT)2·(PW12O40) (2), (H3TPT)2·(SiW12O40)·2Cl·2MeCN (3), and H3TPT·(HPMo12O40)·Cl·3NMP (4) (TPT is tri(4-pyridyl)-s-triazine, NMP is N-methylpyrrolidone), have been synthesized and characterized. Benefitting from the strong interactions (anion–π interactions) and matching electron energy levels between the donors and acceptors, some of them exhibited ultrafast photochromic behaviour even up to 1 second. Furthermore, based on experimental and theoretical calculations, the plausible PIET process and structure–activity relationship have been discussed in detail.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）