JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Shanshan Song,Miao Yang,Fei He,Xiao Zhang,Yijun Gao,Baichao An,He Ding,Shili Gai,Piaoping Yang
Nanozyme-based synergistic catalytic therapies for tumors have attracted extensive research attention. However, the unsatisfactory efficiency and negative impact of the tumor microenvironment (TME) hinder its clinical applications. In this study, we provide an easy method to prepare transition metals loaded onto pyrrolic nitrogen-rich g-C 3 N 4 (PN-g-C 3 N 4 ) for forming metal-N4 sites. This N-rich material effectively transfers electrons from g-C 3 N 4 to metal-N4 sites, promotes the oxidation–reduction reaction of metals with different valence states, and improves material reusability. Under TME conditions, copper ions loaded onto PN-g-C 3 N 4 (Cu-PN-g-C 3 N 4 , CPC) can produce ·OH through a Fenton-like reaction for tumor inhibition. This Fenton-like reaction and tumor cell inhibition can be improved further by a photodynamic effect caused by light irradiation. We introduced upconversion nanoparticles (UCNPs) into CPC to obtain nano-enzymes (UCNPs@Cu-PN-g-C 3 N 4 , UCPC) for effectively penetrating the tissue, which emits light corresponding to the UV absorption region of CPC when excited with 980 nm near-infrared (NIR) light. The nanoplatform can reduce H 2 O 2 concentration upon exposure to NIR light; this induces an increase in dissolved oxygen content and produces a higher supply of reactive oxygen species (ROS) for destroying tumor cells. Owing to the narrow bandgap (1.92 eV) of UCPC under 980 light irradiation, even under the condition of hypoxia, the excited electrons in the conduction band can reduce insoluble O 2 through a single electron transfer process, thus effectively generating O 2 •– . Nanoenzyme materials with catalase properties produce three types of ROS (·OH, O 2 •– and 1 O 2 ) when realizing chemodynamic and photodynamic therapies. An excellent therapeutic effect was established by killing cells in vitro and the tumor-inhibiting effect in vivo , proving that the prepared nanoenzymes have an effective therapeutic effect and that the endogenous synergistic treatment of multiple treatment technologies can be realized.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Yangyang Dai,Zhenhua Niu,Tian Fang,Yuanyuan Wang,Suyue Zhong,Peng Mu,Jian Li
The structural advantages of the membrane material itself are critical to the membrane separation performance. Two-dimensional (2D) graphitic carbon nitride (g-C 3 N 4 ) nanosheets can achieve minimal mass-transfer barrier and high gas sieving performance due to their ultra-thin thickness, inherent surface porosity and abundance of amine groups. However, the 2D g-C 3 N 4 nanosheets are prone to stacking during the self-assembly process, which reduces the membrane permeability. Based on this line, herein, we proposed a concept of construction of 1D-2D intercalated network supported ionic liquid membrane composed by one-dimensional (1D) carboxymethylcellulose ( CMC ) and g-C 3 N 4 nanosheets to overcome the low permeability of 2D graphitic carbon nitride membrane in separating CO 2 /N 2 and CO 2 /CH 4 . The as-prepared 1D-2D intercalated network supported ionic liquid gas separation membrane exhibits superior CO 2 permeance of 953.96 GPU, CO 2 /N 2 selectivity of 55.46 in separation of CO 2 /N 2 , and CO 2 permeance of 854.00 GPU, CO 2 /CH 4 selectivity of 50.62 in separation of CO 2 /CH 4 . In addition, the resulting CMC@g-C 3 N 4 /IL membrane has excellent durability. After 120 h of testing, it still has outstanding separation performance. In short, this concept in this study provides an effective modulation of molecular sieving of g-C 3 N 4 membrane for high-efficiency CO 2 capture by combination of the advantages of the 1D (CMC) and 2D (g-C 3 N 4 ) materials.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF NANOPARTICLE RESEARCH
·
2023
·Vol. 25
·期 8
·1-13
·
IF 2.5
Zhu Jiantao,Wen He,Han Wei,Ma Jiantai,Zhang Feng,Liu Chaowei
The growing concern about the environmental consequences of anthropogenic CO 2 emissions significantly stimulated the research of low-cost, efficient, and recyclable solid adsorbents of CO 2 capture. Metal–organic frameworks (MOFs) are a promising porous material for CO 2 adsorption. Hybrid materials consisting in copper benzene-1,3,5-tricarboxylate (Cu-BTC) and Cu doped graphitic-carbon nitride (Cu-g-C 3 N 4 ) were prepared through solvothermal method as CO 2 adsorbent. The size range of Cu-BTC@1.8%Cu-g-C 3 N 4 was 9.0 ~ 19.4 μm, which was lower than the size range of Cu-BTC (14.6 ~ 29.6 μm). The hybrid adsorbents had lower Brunauer–Emmett–Teller (BET) surface areas and pole volume due to the combination with Cu-g-C 3 N 4 . The CO 2 adsorption capacity of Cu-BTC@1.8%Cu-g-C 3 N 4 increased by 49.5% compared with that of pure Cu-BTC because of more adsorption sites including unsaturated metal centers and N atoms. Moreover, the Cu-BTC@1.8%Cu-g-C 3 N 4 had good stability in CO 2 adsorption capacity after multiple adsorption cycles. Graphical abstract
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Juan Liu,Bing Liu,Cheng Chao Hu,Qing Wei Zhou,Kai Xin Song
(1– x )BaV 2 O 6 - x LiF ( x = 0.025, 0.05, 0.10, 0.15) ceramics with an ultra-low sintering temperature of 475 °C were synthesized using the standard solid-state reaction method. The ceramics demonstrated a remarkable enhancement in the quality factor ( Qf ), reaching a maximum value of 16,800 GHz at x = 0.10, which is 5.6 times higher than that of pure BaV 2 O 6 ceramics obtained in this work. A near-zero temperature coefficient of resonant frequency ( τ f = 1.44 ppm/°C) was simultaneously achieved, together with a dielectric constant ε r of 11.54. Additionally, the chemical compatibility between the present ceramics and the Al electrode was confirmed. Moreover, a millimeter-wave antenna with an excellent S 11 value of −50.3 dB, and a large bandwidth of 3.44 GHz was fabricated using the 0.9BaV 2 O 6 -0.1LiF ceramic as the dielectric resonator . These results highlight the potential application prospects of (1– x )BaV 2 O 6 - x LiF ceramics in the ultra-low temperature co-fired ceramic technology and 5 G millimeter-wave antennas.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Siao Li,Weisong Yan,Changyi Yang,Yanshu Zhu,Ying Liu,Yaohua Gu,Zhiqiang Wu,Keren Shi,Huiqin Yao
Acridine , as a nitrogen heterocyclic pollutant, poses a huge ecological and human health hazard, and its efficient degradation is one of the top tasks. A novel photo-enzyme-coupled catalytic system was constructed by coupling horseradish peroxidase (HRP) with graphite carbon nitride (g-C 3 N 4 ) through a simple inorganic hybridization process. The obtained g-C 3 N 4 /HRP nanoflowers not only increase the enzyme loading capacity and enzyme activity , but also promote the efficient separation of carriers. More importantly, the H 2 O 2 generated by g-C 3 N 4 directly participates in the redox cycle reaction of HRP, inducing photo-enzyme synergistic catalysis. Therefore, compared to HRP nanoflowers and g-C 3 N 4 nanoflowers, g-C 3 N 4 /HRP nanoflowers exhibited higher catalytic efficiency for the degradation of acridine. Thus, the photo-enzyme coupled catalyst proposed in this study provides a promising platform for the degradation of acridine pollutants by combining enzymes with photocatalysts through inorganic hybridization.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
·
2023
·
IF 3.3
Gang Liu,Sheng Xu,Wenting Li,Zhenxi Wang,Meng Cao,Jinlong Cui,Xinde Jiang,Zhengqiu Li
In order to improve the visible light catalytic activity of TiO 2 , the TiO 2 @g-C 3 N 4 (TCN) composite catalysts with three-dimensional porous structure and rich active sites were prepared by hydrothermal method and calcination method orderly. The synthesized TCN composites microstructures were thoroughly characterized and their performance for the photocatalytic degradation of organic dyes was investigated. The results show that the prepared composites formed the heterojunctions with a core-shell structure, which can effectively broaden the absorption spectrum of TiO 2 to visible light region. In the degradation experiments, the TCN composites exhibited excellent photocatalytic degradation effect on organic dyes, which can reach 99.65% under visible light irradiation for 2 h. The strong acid condition was benefit to the catalytic process. After five cycles of testing, the degradation efficiency of organic dyes can still maintain at 95.62% level, which indicate that the TCN composites had excellent visible light catalytic activity and reusability.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Peng Chai,Chunjia Luo,Jincui Gu,Fan Yu,Min Chao,Xi Chen,Luke Yan
Integrating photocatalytic degradation and membrane separation is a crucial approach to water purification . Here, inspired by Euplectella aspergillum, we presented an electrospinning fibrous membrane containing polyacrylonitrile (PAN), graphitic carbon nitride (g-C 3 N 4 ) particles, and polyvinylpyrrolidone (PVP). The g-C 3 N 4 particles undertook the task of photocatalytic degradation for various contaminants. The PVP molecules assumed the role of pore-forming agent for providing additional channels for high-throughput wastewater purification. Furthermore, the micro/nano porous structure of the PPAN@g-C 3 N 4 fibers promoted the exposure of the photocatalytic active center of the g-C 3 N 4 particles, improving the light absorption capacity and enhancing photocatalytic performance. Hence, the prepared PPAN@g-C 3 N 4 fibrous membrane possessed excellent separation properties for the oil/water mixture (53,555 ± 3241 L m −2 h −1 bar −1 ) and oil-in-water emulsion (103,689 ± 13,286 L m −2 h −1 bar −1 ), and maintained its initial separation performance after cyclic separation. Moreover, the membrane showed excellent photocatalytic performance for different pollutants, among which the photocatalytic efficiency of RhB , MB , and MG was about 100 %. After 7 consecutive photocatalytic degradation of RhB, the efficiency remained above 95 %. Meanwhile, the antibacterial efficiency was more than 87 %. The combination of high-throughput separation performance and excellent catalytic performance exemplifies its potential attractiveness for practical wastewater purification.
✓ 已验证
产品关联
DOI
高影响因子
Nanomaterials
·
2022
·Vol. 12
·期 18
·3108
·
IF 5.719
Yongsheng Yu,Jinghan Wang,Zhaoli Yan,Qiangshan Jing,Peng Liu,Bing Xu
To construct a highly active g-C3N4(CN)/silica hybrid nanosystem, the supramolecular precursor strategy of introducing melamine–cyanuric acid (MCA) by synergistically using micromolecular melamine (m) and urea (u) for CN nanostructure construction on the silica nanosheets (SiNSs) surface was researched. The results showed that the introduction of MCA supramolecular aggregates promoted the generation of ordered CN nanostructures attached to SiNSs, and the morphology of the CN nanostructure could be regulated through the m/u mass ratio. When the ratio is equal to 1/30, a typical g-C3N4/silica hybrid nanosheet (mu-CN/SiNSs-3) was successfully prepared, which showed the ultra-high photocatalytic activity for Rhodamine B dye degradation within 25 min with an apparent rate constant of 0.186 min−1, owing to the large surface area of highly dispersed and ordered CN nanosheets, a strong interaction between CN and SiNSs, high photogenerated carriers separation efficiency, and the more negative conduction band potential offering more active species of1O2and•O2−. Unexpectedly, the mu-CN/SiNSs-2 composite (m/u = 1/10) exhibited the highest activity for tetracycline antibiotic degradation, mainly due to the morphological advantage of a certain number of nanotubes generated on the CN/SiNSs hybrid nanosheets. It indicates that the supramolecular precursor strategy by synergistically using melamine and urea is highly efficient for the nanostructure construction of the CN/SiNSs hybrid system, enabling an appropriate nanostructure for the photodegradation of various pollutants.Keywords:g-C3N4;supramolecular precursor;silica;hybrid nanosheets;photocatalysis
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL TECHNOLOGY
·
2022
·
IF 3.475
Kang-Ping Cui,Ting-Ting Yang,Yi-Han Chen,Rohan Weerasooriya,Guang-Hong Li,Kai Zhou,Xing Chen
Antibiotic pollution of water resources is a global problem, and the development of new treatments for destroying antibiotics in water is a priority research. We successfully manufactured recyclable magnetic Fe3O4/g-C3N4 through the electrostatic self-assembly method. Selecting tetracycline (TC) as the target pollutant, using Fe3O4/g-C3N4 and H2O2 developed a heterogeneous optical Fenton system to remove TC under visible light. Fe3O4/g-C3N4 was systematically characterized by SEM, TEM, XRD, FTIR, XPS, DRS, and electrochemical methods. The removal efficiency of 7% Fe3O4/g-C3N4 at pH = 3, H2O2 = 5 mM, and catalyst dosage of 1.0 g/L can reach 99.8%. After magnetic separation, the Fe3O4/g-C3N4 photocatalyst can be recycled five times with minimal efficiency loss. The excellent degradation performance of the prepared catalyst may be attributed to the proper coupling interface between Fe3O4 and g-C3N4 which promotes the separation and transfer of photogenerated electrons. Photogenerated electrons can also accelerate the conversion of Fe3+ to Fe2+, thereby producing more ˙OH. The new Fe3O4/g-C3N4 can be used as a raw material for advanced oxidation of water contaminated by refractory antibiotics.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2022
·Vol. 13
·期 1
·1-20
·
IF 17.694
Tian Yuyao,Wang Wuming,Lautrup Sofie,Zhao Hui,Li Xiang,Law Patrick Wai Nok,Dinh Ngoc-Duy,Fang Evandro Fei,Cheung Hoi Hung,Chan Wai-Yee
Werner Syndrome (WS) is an autosomal recessive disorder characterized by premature aging due to mutations of the WRN gene. A classical sign in WS patients is short stature, but the underlying mechanisms are not well understood. Here we report that WRN is indispensable for chondrogenesis, which is the engine driving the elongation of bones and determines height. Zebrafish lacking wrn exhibit impairment of bone growth and have shorter body stature. We pinpoint the function of WRN to its helicase domain. We identify short-stature homeobox (SHOX) as a crucial and direct target of WRN and find that the WRN helicase core regulates the transcriptional expression of SHOX via unwinding G-quadruplexes. Consistent with this, shox −/− zebrafish exhibit impaired bone growth, while genetic overexpression of SHOX or shox expression rescues the bone developmental deficiency induced in WRN / wrn -null mutants both in vitro and in vivo. Collectively, we have identified a previously unknown function of WRN in regulating bone development and growth through the transcriptional regulation of SHOX via the WRN helicase domain, thus illuminating a possible approach for new therapeutic strategies.
✓ 已验证
DOI
PubMed
高影响因子
FOOD CHEMISTRY
·
2022
·
IF 9.231
Zhengzheng Zhao,Zhifang Wu,Xueling Lin,Fangjie Han,Zhishan Liang,Likun Huang,Mengjiao Dai,Dongxue Han,Lipeng Han,Li Niu
A simple low-cost label-free photoelectrochemical (PEC) biosensing platform based on red blood cell shaped BiVO 4 modified g-C 3 N 4 was designed for tetracycline detection under room temperature. The prepared g-C 3 N 4 /BiVO 4 heterojunction not only demonstrated a high surface area, excellent physicochemical stability and favorable PEC activity, but also can be employed as nanostructure support for aptamers to construct a visible-light-driven PEC aptasensor due to rich π-π accumulation sites. More importantly, the proposed PEC aptasensor showed a favorable linear toward tetracycline in the range from 5 × 10 -9 to 2 × 10 -7 M with a detection limit of 1.6 nM, which well covered the Food Standards Testing requirements. Practical food sample analysis further revealed the accuracy and feasibility of the g-C 3 N 4 /BiVO 4 heterostructure based PEC platform. It is expected that such a label-free and cost-effective PEC strategy should act as a promising candidate for tetracycline determination in food quality control and supervision.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 50
·32480-32487
·
IF 4.036
Jingzhe Li,Yue Chen,Liezhen Zhu,Linfa Liao,Xinmao Wang,Xun Xu,Lingfang Qiu,Jiangbo Xi,Ping Li,Shuwang Duo
In this study, a novel g-C3N4-based ternary heterojunction was rationally designed and constructed by the in situ growth of ZnIn2S4 nanosheets and CdS nanoparticles onto the g-C3N4 nanosheets using a facile two-step oil-bath method. Through optimizing the proportion of ZnIn2S4 and CdS component, g-C3N4 nanosheets coupled with ZnIn2S4 nanosheets and CdS nanoparticles (denoted as CdS/ZnIn2S4/g-C3N4) exhibited obviously higher photocatalytic properties for RhB removal than the single-component and dual-component systems. Among the as-obtained ternary photocatalysts, it was found that the ternary CdS/ZnIn2S4/g-C3N4-0.2 photocatalyst displayed the optimum photocatalytic property (96%) within a short time (30 min), which was almost 27.42 and 1.17 times higher than that of pure g-C3N4 and binary ZnIn2S4/g-C3N4-0.7 composite. The excellent activity of the ternary CdS/ZnIn2S4/g-C3N4 heterostructure is assigned to the synergetic effects of CdS nanoparticles, ZnIn2S4 nanosheets and g-C3N4 nanosheets, which not only broaden the visible-light absorption range, but also improve the charge mobility and separation rate, thus boosting the visible-light-driven photocatalytic property of g-C3N4.
✓ 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）