JOURNAL OF CHROMATOGRAPHY A
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2019
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IF 3.858
Yong Zhang,Hongyu Jing,Bo Meng,Xiaohong Qian,Wantao Ying
The facile enrichment of glycopeptides or glycoproteins poses great challenges for glycoproteomic research. In this study, a novel hydrophilic material, named zwitterionic hydrophilic L-cysteine derivatized straticulate-C 3 N 4 composites (LCAC), were synthesized and evaluated for the enrichment of N-glycopeptides. LCAC exhibited good biocompatibility, excellent hydrophilicity and selectivity, by virtue of the large surface of C 3 N 4 and the zwitterionic property offered by cysteine. LCAC demonstrated excellent performance for N-glycopeptide enrichment with the sensitivity of 0.033 fmol/µL, selectivity of 1:100, and high recovery rate (∼85%). The performance of LCAC was demonstrated by the identification of 35 N-glycopeptides from IgG, as well as capturing 1809 human urine N-glycopeptides corresponding to 876 N-glycoproteins. Comparing the LCAC with our developed phenylboronic acid functionalized material showed a certain complementary due to the different binding mechanism. The simple production and enhanced hydrophilic properties make the material a promising choice for glycoproteomics researches.
研究领域:
蛋白质组学
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分析化学
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产品关联
DOI
PubMed
高影响因子
SYNTHETIC METALS
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2022
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IF 4
Afzal Ali,Tahir Raza,Adeel Ahmed,Muhammad Safdar Ali,Changbao Liu,Dong Li,Chunhu Li
The intentional discharge of polycyclic aromatic hydrocarbons (PAHs) into the aquatic system from different industrial units has posed a serious threat to human health. To address the concerns associated with PAHs misuse, an efficient approach for developing affordable photocatalyst materials for PAHs degradation is much needed. In this study, we have explored co-precipitation and hydrothermal methods to synthesize Fe 3 O 4 /GO/g-C 3 N 4 ternary composites and utilized them as photocatalyst materials for the degradation of naphthalene. Fe 3 O 4 /GO/g-C 3 N 4 nanocomposite demonstrated superior degradation performance, with 87.56% naphthalene degradation achieved in 140 min under visible light irradiation, far outperforming Fe 3 O 4 /GO (77.42%) and Fe 3 O 4 (69.42%). The enhanced degradation of naphthalene by the Fe 3 O 4 /GO/g-C 3 N 4 composite was credited to the effective charge carrier separation and increased visible-light absorption induced by GO and g-C 3 N 4 . The impact of operating parameters on the catalytic efficiency of the Fe 3 O 4 /GO/g-C 3 N 4 catalyst was also examined. The findings of this study revealed that lower naphthalene concentration (10 mg/L), higher catalyst dosage (40 mg), and moderate pH conditions (pH 5 to pH 9) were favorable for photocatalytic activity. The degradation of naphthalene followed pseudo-first-order kinetics with a rate constant value of 0.0137 min −1 . The generation of radicals ( • OH and O 2 •− ) liable for the degradation of naphthalene was corroborated through electron paramagnetic resonance analysis and quenching experiments. Furthermore, the Fe 3 O 4 /GO/g-C 3 N 4 photocatalyst exhibited promising reusability in five consecutive cyclic runs, validating its excellent stability.
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
高影响因子
DIAMOND AND RELATED MATERIALS
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2024
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IF 4.3
Yuqi Cao,Yingpei Liu,Chenchen Ding,Tingting Ma,Huimin Ye,Weiwei Zhong,Wei He
In this study, four cobalt ferrite@carbon nitride (CoFe 2 O 4 @g-C 3 N 4 ) composites were prepared by co-precipitation method to achieve chemo-photodynamic synergistic cancer therapy. The effect of the morphology of g-C 3 N 4 on the chemotherapy and photodynamic therapy of CoFe 2 O 4 @g-C 3 N 4 (CFO@g-C 3 N 4 ) was investigated in detail. CFO@PMCN with porous structures and CFO@CNT with a reticulated structure displayed high loading efficiencies of doxorubicin (DOX), exhibiting a pH-responsive release property and facilitating the delivery of DOX into cancer cells for chemotherapy. CFO@CNT possessed a higher photothermal performance for photothermal agents in cancer treatment compared with other CoFe 2 O 4 @g-C 3 N 4 composites. In addition, more reactive oxygen species (ROS) was generated in the assistance of CFO@CNT under the irradiation condition for photodynamic therapy (PDT) treatment. Based on the synergistic effect of chemotherapy and photodynamic therapy, the obtained CFO@CNT-DOX exhibited an excellent therapeutic effect and significant pH-responsive release characteristics confirmed by dimethylthiazol diphenyltetrazolium bromide (MTT) assay and dual staining fluorescence imaging analysis.
研究领域:
纳米医学
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肿瘤学
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2024
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IF 3.2
Congtian Liu,Xiaoya Zhu,Ling Wang,Chujun Feng,Jian Rong,Zhongyu Li,Song Xu
Tetracycline antibiotics as one of the most widely used antibiotics at present, are difficult to degrade in the environment, which poses a serious threat to the ecosystem and human health. In this work, NiTiO 3 /g-C 3 N 4 composites were successfully constructed by calcination method using nickel acetate tetrahydrate as nickel source and tetrabutyl titanate as titanium source. The photocatalytic degradation efficiency of the 5 wt% NiTiO 3 /g-C 3 N 4 composite of TC can reach 88.2 % within 150 min, which was 1.4 and 2.2 times higher than that of pure g-C 3 N 4 (63 %) and NiTiO 3 (40 %), respectively. The 5 wt% NiTiO 3 /g-C 3 N 4 composite can still maintain good stability after four cycles. The experimental results showed that the construction of Z-scheme heterojunction can effectively improve the photocatalytic activity of the catalysts and maintain good redox properties at the same time. Furthermore, a possible mechanism of photocatalytic degradation of NiTiO 3 /g-C 3 N 4 heterojunction has been suggested.
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
高影响因子
ACS Applied Materials & Interfaces
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2016
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IF 7.145
RongQin Ye,HuaBin Fang,Yan-Zhen Zheng,Nan Li,Yuan Wang,Xia Tao
A novel direct Z-scheme CoTiO3/g-C3N4 (CT-U) photocatalytic system with different weight percentage of CoTiO3 was synthesized using a facile in situ growth method for H2 evolution from water splitting. The as-prepared CT-U composites composed of 1D CoTiO3 microrod and 2D g-C3N4 nanosheet were characterized by various techniques including XRD, SEM, TEM, XPS, FTIR, and UV–vis. Results demonstrate that the CT-U composite photocatalysts were successfully fabricated, with intimate interfacial contact and heterojunction interaction between g-C3N4 and CoTiO3 which can significantly boost the photocatalytic activity compared with prinstine g-C3N4 and CoTiO3. The most enhanced H2-evolution rate of 858 μmol h–1 g–1 and high quantum efficiency (38.4% at 365 nm, 3.23% at 420 ± 20 nm) are achieved at an optimal 0.15% CT-U. Meanwhile, the 0.15% CT-U sample exhibits good photocatalytic stability in recycling H2 evolution. Accordingly, direct Z-scheme mechanism capable of leading efficient charge carrier separation and strong reduction ability for enhanced H2 production was proposed, and further evidenced by PL, photoelectrochemical analysis, and ESR assay.
研究领域:
材料科学
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光催化化学
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产品关联
DOI
PubMed
高影响因子
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
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2023
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IF 6.8
Wei Liu,Jin Zhang,Qun Kang,Hongbing Chen,Ru Feng
Environmental pollution by organic pollutants poses a great threat to the ecosystem and human development. Solar-powered catalytic oxidation technology can solve the existing energy and pollution crisis. Hence, in this work, cubic nano-In 2 O 3 modified g-C 3 N 4 composite was synthesized by in situ calcination, then it was coupled with hydrogen peroxide for the degradation of antibiotic under visible light. The results of SEM and XPS showed that In 2 O 3 and g-C 3 N 4 were closely combined. The catalytic oxidation efficiency of the antibiotic doxycycline was greatly improved when the as-prepared compound was coupled with hydrogen peroxide, and 88.2% of doxycycline was degraded within 80 min. By designing the active species inhibition test, it was found that a large number of hydroxyl radicals were generated in the system after adding hydrogen peroxide, which accelerated the degradation of the target. Hydrogen peroxide not only acts as a source of hydroxyl radical, but also as an active electron acceptor, which promotes the separation of photogenerated electron-hole pairs in the composite photocatalyst. Therefore, the double oxidation system formed by In 2 O 3 /g-C 3 N 4 coupled with hydrogen peroxide can degrade the target at a higher rate. This work provided a research basis for the synthesis of In 2 O 3 with regular morphology and simplified synthesis of In 2 O 3 /g-C 3 N 4 , and explored the practicability of the coupling method of double advanced oxidation for pollutant degradation.
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
MATERIALS RESEARCH BULLETIN
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2019
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IF 3.355
Bo Yu,Fanming Meng,Muhammad Wasim Khan,Rui Qin,Xingbin Liu
Herein, TiO 2 /g-C 3 N 4 /Ag (TCA) composites were successfully fabricated by a simple two-step method and wet chemical reduction. Titanium isopropoxide and melamine were used as precursors to prepare TiO 2 /g-C 3 N 4 heterojunction composites by simple stirring and calcining. Then, different mass fractions of AgNPs were decorated on the surface of the above composites by wet chemical reduction to obtain a sequence of TiO 2 /g-C 3 N 4 /Ag (TCA) composites. TCA composites were analyzed by XRD, TEM, HRTEM, EDS, XPS, BET, Raman spectroscopy, PL spectrum and UV–vis diffuse reflectance spectrum. The results showed that TCA composites had remarkable enhancement in the separation of photogenerated carriers and the utilization of light, which was as result of the coordination of the three components. For photodegradation of RhB or phenol under simulated sunlight, TCA-1 samples revealed the best photocatalytic degradation performance, and the corresponding degradation rates were 91.4% at 60 min and 90.0% at 120 min, respectively. Moreover, TCA-1 composites maintained superior degradation performance after reusability tests, indicating that TCA-1 composites had excellent photochemical stability. For experimental results, a possible photodegradation mechanism of TCA composites was also proposed.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2017
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IF 9.446
Tingting Xiao,Zheng Tang,Yong Yang,Lanqin Tang,Yong Zhou,Zhigang Zou
Elegant Z-scheme WO 3 /g-C 3 N 4 composite hollow microspheres (CHMs) were constructed through precisely controlled in situ hydrolysis and a polymerization process consecutively. The formation of intact and well-defined hollow microspheres can be realized through optimizing the ratio of precursors for WO 3 and g-C 3 N 4 . The shell of these hollow microspheres consist of well-distributed WO 3 and g-C 3 N 4 nanoparticles, and excellent heterojunctions with numerous interfaces and highly exposed oxidation-reduction active sites have thus been built. By virtue of this special architecture, more incident photons are expected to be trapped in the hollow cavities, which contribute to more electrons and holes available for photocatalytic reactions. Moreover, these photoinduced hole-electron pairs could be effectively separated, and the lifetime of charge carriers reaches 2.23 ns, which is obviously prolonged compared with the WO 3 . WO 3 /g-C 3 N 4 CHMs as an optimized Z-scheme system retains the original oxidation and reduction abilities for the components without change of the oxidation and reduction potential. Combined with the long survival time of holes and electrons, this photocatalyst showed enhanced degradation rates towards tetracycline hydrochloride (TC-HCl) and ceftiofur sodium (CFS).
研究领域:
材料科学
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环境科学
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光催化
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Longqu Xiao,Shiyang Zhang,Boqi Chen,Panpan Wu,Ningdong Feng,Feng Deng,Zhi Wang
Herein, a new type of photocatalyst, that is biochar/g-C 3 N 4 (BC/CN) composite, was successfully prepared from melamine and waste crawfish shells by a simple thermal condensation process and used to degrade enrofloxacin (ENR) wastewater under visible light. The structure and photoelectrochemical properties of the composites were thoroughly characterized. Results showed that there are obvious synergistic effects between BC and CN present in the composite. When the ratio of BC to CN is 2%, the catalyst (BC/CN-2%) has the best visible-light photocatalytic performance. The •O 2 − radicals were the main oxidation free radicals responsible for ENR removal and the radicals first attacked the piperazine moiety of the ENR, and further, the whole photocatalytic degradation pathway was proposed. This study provided a promising strategy for the synthesis of photocatalyst materials from waste crawfish shells and their application in the treatment of antibiotic wastewater.
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
高影响因子
OPTICAL MATERIALS
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2023
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IF 3.9
Xiaoxia Ou,Pu Chen,Ke Zhao,Cunjie Xia
A novel ternary photocatalyst with a Z-scheme heterojunction was successfully synthesized through the deposition of Ag nanoparticles onto the surface of a ZnO/g-C 3 N 4 composite. The prepared photocatalysts were characterized by XRD , FT-IR, XPS , HRSEM, TEM , DRS, PL, EIS, TPC , and M-S. The photocatalytic performance of the as-synthesized photocatalysts was systematically investigated through the photodegradation of norfloxacin (NOR) and rhodamine B (RhB) under visible light irradiation. The photodegradation efficiency of 5% Ag/ZnO/g-C 3 N 4 (5AZCN) composite photocatalyst reached 86.7% (480 min) and 98.0% (60 min) for NOR and RhB, respectively. Moreover, the apparent rate constants of the 5AZCN composite photocatalysts for NOR and RhB were found to be 3.4 and 22.2 times higher than that of the ZCN composite photocatalysts, respectively. The significantly enhanced photocatalytic performance was ascribed to the widened range of visible light response and the efficient separation and migration of carriers facilitated by the introduction of Ag nanoparticles that functioned as electron transfer mediators. Based on the free radicals quenching experiment and electron spin resonance (ESR) spectroscopy characterization, superoxide radicals (·O 2 − ) were the main reactive species in the photodegradation process. Furthermore, the charge transfer process was proved to be a Z-scheme transfer mechanism. This work provides a promising approach to simply constructing novel efficient Z-scheme photocatalysts for the elimination of environmental pollutants.
研究领域:
环境科学
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材料科学
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光催化技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE CHEMISTRY
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2023
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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.
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
APPLIED SURFACE SCIENCE
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2019
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IF 5.155
Yangqing He,Zhengrui Huang,Zhanying Ma,Binghua Yao,Haiyang Liu,Linlin Hu,Qing Zhao,Qian Yang,Dongjie Liu,Deguo Du
In this study, zinc (II) 1, 8(11),15(18),22(25) - tetrakis (4-carboxylphenoxy) phthalocyanine (α-ZnTcPc) was synthesized as sensitizer to construct a novel photocatalyst α-ZnTcPc/g-C 3 N 4 by a polycondensation strategy. The FT-IR and XPS spectra demonstrated that the α-ZnTcPc molecules were covalently coupled on g-C 3 N 4 . The 10%α-ZnTcPc/g-C 3 N 4 composites exhibit excellent extended spectral response with intense broad near-infrared absorption at 695 nm and with significantly fascinated charge carrier separation. As expected, the 10%α-ZnTcPc/g-C 3 N 4 displayed a remarkable improved photocatalytic performance in decomposition of methylene blue (MB) and antibiotic tetracycline with degradation rates of 94.49% and 91.43% under visible light irradiation, respectively. The hydroxyl radicals (·OH) were observed as the main reactive oxidizing species in tetracycline decomposition. Moreover, the possible mechanism for enhanced visible light photocatalytic capability might be ascribed to the synergetic effect between α-ZnTcPc and g-C 3 N 4 , which creates large surface areas, decreases the recombination rate of photogenerated charge carries, as well as improves the visible light harvesting significantly. This work not only presents a practical method to conquer the drawback of pure g-C 3 N 4 , but also provides useful insights to construct other g-C 3 N 4 -based composites to take full advantage of solar light towards practical applications for eliminating recalcitrant organic pollutants.
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
危险品化学品经营许可证（带存储）