JOURNAL OF SOLID STATE CHEMISTRY
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2022
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IF 3.656
Meng Chen,Chao Wang,Lei Wang,Jixiang Xu
In this work, carbon quantum dots@In 2 S 3 hollow tube (CQDs@In 2 S 3 ) with sheet-like hierarchical structure was synthesized by sulfidation CQDs@In-MIL-68. The CQDs@In 2 S 3 -2 exhibited the optimal Cr(VI) reductive ratio of nearly 100% after 45 min light irradiation in solution with pH of 4. The enhanced Cr(VI) reduction activity was ascribed to the efficient separation of electrons and holes after coupling of CQDs. The ·O 2 − was the dominant active specie to reduce Cr(VI), and possible mechanism was proposed. This work provides thought for design of high-performance photocatalysts by loading electron-collecting species to remove environmental pollutants .
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
Journal of Materials Chemistry B
·
2019
·Vol. 7
·期 16
·2688-2695
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IF 5.047
Qi Wang,Yan Wang,Baoyan Guo,Shuibin Shao,Yueqi Yu,Xiaotan Zhu,Mimi Wan,Bo Zhao,Chi Bo,Chun Mao
Based on the concept of the active drug delivery of micro- and nanomotors and the longer cycle time in the blood for drug-loaded tubular particles, it is important to develop novel tubular micromotors that could increase drug loading and achieve more effective treatments in the biomedical field. Here, a novel kind of mesoporous tubular micromotor used to load heparin (Hep) and formed via template-assisted electrochemical deposition is presented. Firstly, the mesoporous tubular micromotors were composed of poly(3,4-ethylenedioxythiophene) (PEDOT), mesoporous silica (MS) and manganese dioxide (MnO2), and were simply fabricated via template-assisted electrochemical growth. Then, the drug Hep was loaded into PEDOT/MS/MnO2via a simple soaking process. Finally, the release process, cytotoxicity, and blood compatibility tests and motion study for these mesoporous tubular micromotors of PEDOT/MS/MnO2-Hep were performed. Results indicated that the micromotors we prepared showed good controlled release of Hep, anticoagulant effects, non-cytotoxicity and autonomous motion ability. The new drug carrier and motion mode will give rise to more potential applications of Hep in the biomedical field.
研究领域:
生物医学工程
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材料科学
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药学
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DOI
PubMed
高影响因子
APPLIED PHYSICS LETTERS
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2023
·Vol. 122
·期 12
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IF 4
Zhu Guozhen,Yang Qihao,Che Renchao
Co 3 O 4 /NiO@C (CNOT@C) microspheres were synthesized via a facile solvothermal method and annealing treatment under an argon atmosphere. A high initial reversible specific capacity of 1469.7 mA h g −1 of CNOT@C was attained due to its high specific surface area from its unique triangular hollow tube morphology. These triangular hollow tubes relieved volume expansion from repeated cycling processes, with CNOT@C attaining a high reversible specific capacity of 694.9 mA h g −1 after 1000 cycles at 6000 mA g −1 . Furthermore, excellent rate performance of CNOT@C was achieved due to its carbon layer coating, exhibiting a reversible specific capacity of 429.8 mA h g −1 at 10 000 mA g −1 .
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Yunchao Wu,Yige Qi,Guoxi Zhou,Hou Wang,Zhiyong Yan,Yan Wu
A good approach to addressing global warming and the energy crisis is to use semiconductor photocatalysts for water splitting to produce valuable fuels such as hydrogen. In this study, different photocatalysts (ZIS1, ZIS2, ZIS3 and ZIS4) derived from different degrees of sulfidation of In-MOFs were made via the hydrothermal method . Among them, ZIS2 owned the best photocatalytic hydrogen production performance (3.45 mmol h −1 g −1 ). Additionally, this study also investigated the photocatalytic hydrogen production performance of ZIS2 in tetracycline (TC) wastewater systems. In 10 mg L −1 of TC wastewater, the H 2 generation rate reached 98.34 μmol g −1 , and 95.27 % of the TC was removed after 4 h. Characterization techniques revealed that the hollow tubular structure in ZIS2 sample played a crucial role in internal charge transport, thereby influencing the photochemical reaction of photogenerated particles. The research on the structure-properties of the ZIS2 hollow tubular was expanded in the field of photocatalytic application, and its possible use in the area of solar fuel transition was also expanded.
研究领域:
材料科学
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环境科学
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能源科学
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产品关联
DOI
高影响因子
Materials
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2023
·Vol. 16
·期 20
·6665
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IF 3.4
Manying Sun,Chuanwei Zhu,Su Wei,Liuyun Chen,Hongbing Ji,Tongming Su,Zuzeng Qin
Photocatalytic CO2reduction is a tactic for solving the environmental pollution caused by greenhouse gases. Herein, NH4H2PO4was added as a phosphorus source in the process of the hydrothermal treatment of melamine for the first time, and phosphorus-doped hollow tubular g-C3N4(x-P-HCN) was fabricated and used for photocatalytic CO2reduction. Here, 1.0-P-HCN exhibited the largest CO production rate of 9.00 μmol·g−1·h−1, which was 10.22 times higher than that of bulk g-C3N4. After doping with phosphorus, the light absorption range, the CO2adsorption capacity, and the specific surface area of the 1.0-P-HCN sample were greatly improved. In addition, the separation of photogenerated electron–hole pairs was enhanced. Furthermore, the phosphorus-doped g-C3N4effectively activated the CO2adsorbed on the surface of phosphorus-doped g-C3N4photocatalysts, which greatly enhanced the CO production rate of photocatalytic CO2reduction over that of g-C3N4.
研究领域:
环境科学
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材料科学
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2022
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IF 7.392
Jia Wang,Xuan Zhao,Hongqiang Qu,Jianzhong Xu,Jing Ma
The property of the substrate takes a critical role in the separation performance of the thin-film composite (TFC) membrane. While, regulating the properties of the substrate by introducing metal–organic framework with tunable shapes for optimal TFC membrane has not been studied in-depth. In this work, a rationally regulated polyethersulfone substrate was designed by embedding ZIF-8 with three different shapes (spherical, hollow tube and flowerlike). Then, the TFC membranes were obtained by synthesising polyamide layer on the modified substrates. The results show that the modified substrates have positive effect on the water treatment performance, which was highly related to the addition amount and shapes of ZIF-8. Specifically, the hollow tube ZIF-8 modified TFC membrane exhibits the best water permeance of 2.22 L m -2 h −1 bar −1 (LMH bar −1 ) and excellent rejections (94.2 %, 99.7 %, 99.8 %, 99.9 % for NaCl, AO, MO and DR, respectively), which mainly derived from the increased channels and surface roughness. The findings provide a comprehensive insight of the shape-controlled substrate in the separation performance of the TFC membranes.
研究领域:
材料科学
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化学工程
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环境工程
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DOI
高影响因子
RARE METALS
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2023
·Vol. 42
·期 6
·1836-1846
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IF 8.8
Zhang Yu,Teng Xue-Ai,Ma Ze-Qun,Wang Rong-Ming,Lau Woon-Ming,Shan Ai-Xian
For catalytic materials, the characteristics of one-dimension and hollowness are the promotion factors for their full presentation of catalytic activity, and through a template-assisted method, both above superiorities can be fused simultaneously. Here, we proposed a novel strategy inspired by Pearson’s principle with Cu 2 O wires as templates, and prepared FeOOH hollow tubes, which covered by FeOOH scales. When applied as oxygen evolution reaction (OER) catalyst, the FeOOH scaly hollow tubes (FeOOH SHTs) showed outstanding catalytic activity with a low overpotential of 245 mV to drive a current density of 10 mA·cm −2 , excellent kinetics manifesting as a low Tafel slope of 46.9 mV·dec −1 , and robust stability. This work provides a new synthesis strategy for an ideal OER catalyst, FeOOH, with high inherent activity and enhances the feasibility to broaden the design ideas of transition metal-based catalysts. Graphical abstract
研究领域:
材料科学
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电化学
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催化
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Chen Chen,Jianhao Qiu,Guanglu Xia,Lu Zhang,Yixin Li,Biyao Fang,Meng Liu,Jianfeng Yao
Utilizing metal–organic frameworks as templates to synthesize photocatalysts has garnered increasing attention thanks to their substantial advantages. In this study, Cu-doped ZnIn 2 S 4 with hollow tubular structures was ingeniously synthesized using MIL-68-NH 2 as a template for photocatalytic H 2 O 2 production in ambient air and pure water under visible light. The hollow tubular structures promote light penetration and reflection, furnish substantial accessible reactive sites and accelerate the diffusion of reactants and products. Cu doping notably varies the band configuration of ZnIn 2 S 4 , resulting in a narrower bandgap and a lower conduction band potential. Their cooperative effects enable a respectable H 2 O 2 production from oxygen reduction reactions. The hollow tubular ZnIn 2 S 4 and corresponding Cu-doped counterpart achieved high H 2 O 2 yields of 1153 and 1616 μmol·L −1 , respectively, 3.6 and 5.1 times-increase compared with that of ordinary ZnIn 2 S 4 prepared without MIL-68-NH 2 . This work would provide a new perspective on ZnIn 2 S 4 -based photocatalysts and provoke the study on the green synthesis of H 2 O 2 .
研究领域:
光催化
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纳米材料
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环境化学
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材料科学
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绿色化学
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产品关联
DOI
PubMed
高影响因子
Progress in Natural Science-Materials International
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2022
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IF 4.269
Yu Zhang,Xueai Teng,Zequn Ma,Rongming Wang,Woon-Ming Lau,Aixian Shan
Cu 2 O is an ideal template material for the preparation of transition metal hydroxide/oxyhydroxides with oxygen evolution reaction (OER) enhanced catalytic performance. Here, inspired by Pearson's principle, Cu 2 O wires were prepared and used as a sacrificial template to prepare Ni(OH) 2 ·0.75H 2 O hollow tubes (Ni(OH) 2 HTs) with highly improved surface roughness. Benefiting from unique structural advantages, the Ni(OH) 2 HTs showed excellent catalytic activity, rapid kinetics and a long-term stability as the OER catalyst, where an overpotential of only 207 mV was required to drive a current density of 10 mA cm −2 , an ideal kinetics with a Tafel slope as 79.8 mV dec −1 was calculated, and no obvious attenuation in chronoamperometry was discovered after operation for 24 h. This paper provides a novel template-assisted strategy to prepare high-performance transition metal-based OER catalysts possessing hollow and tubular structures.
研究领域:
材料科学
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电化学
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催化
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2018
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IF 6.14
Dong Yang,Yishan Zhang,Hongjian Zou,Shaohua Zhang,Yizhou Wu,Ziyi Cai,Jiafu Shi,Zhongyi Jiang
Nicotinamide cofactors (e.g., NADH) are essential hydrogen sources for the majority of enzyme reduction reactions. Currently, highly efficient and in situ cofactor regeneration is urgently required but remains challenging. In this study, red phosphorus quantum dots were decorated onto graphitic carbon nitride hollow tubes to prepare high-performance heterojunction photocatalyst (g-C3N4-HTs@rP-QDs) for visible-light-driven NADH regeneration. Energy band analysis combined with photoelectrochemical measurements demonstrates rP-QDs not only act as additional photosensitizers for charge generation but also constitute a type II heterojunction with g-C3N4-HTs for charge transfer, facilitating enrichment of electrons on the g-C3N4-HTs surface. Such enrichment of electrons for g-C3N4-HTs@rP-QDs offers ∼5 times higher reducing active sites than bulk g-C3N4 to trigger the NADH regeneration reaction under visible-light (LED, 405 nm) illumination, thus acquiring superior NADH regeneration efficiency with an initial reaction rate (2 min) of 0.247 ± 0.012 mmol g–1 min–1. In the concerned experimental range, higher g-C3N4-HTs/rP-QDs mass ratios or light intensities that are beneficial for the electron enrichment could result in enhanced regeneration efficiency. The bioactivity of NADH toward enzyme catalysis is further demonstrated by alcohol dehydrogenase-catalyzed hydrogenation of formaldehyde, which enables the sustainable production of methanol.
研究领域:
材料科学
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化学工程
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光化学
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生物催化
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
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2020
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IF 3.306
Sarenqiqige Bao,Haiou Liang,Chunping Li,Jie Bai
A high-efficiency BiOCl/TiO 2 heterostructure hollow-tube (BTHTs) with type-II was successfully synthesized by simple electrospinning technology and solvothermal process loaded with BiOCl nanosheets on TiO 2 hollow-tubes (THTs). The results of morphology show that, the surface of THTs was covered by flaky BiOCl like pieces of flower. Optical and photo-electrochemical characterizations show that the composite catalyst has visible light absorption and high photo-generated electron-hole separation ability. Comparing with THTs and powder BiOCl, the BTHTs composites exhibited highest adsorption capacity and photocatalytic activity in the photodegradation of Tetracycline (TC), in visible light (λ ≥ 420 nm). The composites could also degrade Chlortetracycline, Demeclocycline, Doxycycline and Oxytetracycline efficaciously. Additionally, trapping experiments were carried out, and the possible photocatalytic degradation mechanism was proposed.
研究领域:
材料科学
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环境科学
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纳米技术
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光化学
✓ 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）