CARBON
·
2025
·
IF 11.6
Xinyan Huang,Qingchen Bai,Jian Jiang,Fengyu Qu,Huiming Lin
With various physiological effects, nitric oxide (NO) holds significant promise in anticancer. Because their functions are concentration-dependent, the controllable NO supplement and high release capacity are vital to realize the multifaceted capabilities. Here, C 3 N 4 nanosheet was prepared as new NO donor, revealing the specific release profile to tumor microenvironment (TME, weak acidity and high expressed H 2 O 2 ). The NO release is initiated with the protonation of N (high electronegativity) and the subsequent oxidation of active -NH x species. Unlike the organic NO donors, inorganic C 3 N 4 nanosheets don’t need extra carriers, which is associated with high N atom ratio to grant the great release capacity. Furthermore, the as-synthesized C 3 N 4 nanosheet exhibits piezoelectric feature, enabling reactive oxygen species (ROS) generation under ultrasound (US) treatment for sonopiezoelectric therapy (SPT). The sufficient ROS allows for the amplification of NO release triggered by US. The intracellular NO bubbles also enhance the contrast for ultrasonic imaging, guarantying real-time monitoring of the therapeutic effect. Additionally, NO can capture ROS in situ to generate peroxynitrite anion (·ONOO - ) with stronger oxidability to damage mitochondria and DNA seriously. Without US, C 3 N 4 nanosheet still can produce the moderate amount of NO triggered by TME to downregulate immune checkpoints (PD-L1), normalize vascular, and relieve hypoxia, all of which contributes to the overall anticancer efficacy. The synergic therapy (NO+SPT) also could enhance immunogenic cell death (ICD), thereby stimulating anticancer immune response for the inhibition of metastasis and recurrence, efficiently.
研究领域:
生物医学工程
·
癌症治疗
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Zijie Zhang,Qiao Yin,Linlin Xu,Jiaming Zhai,Chun Guo,Yongqiang Niu,Liwei Zhang,Mingliang Li,Hailong Wang,Li Guan,Rui Zhang,Hongxia Lu
The construction of new semiconductor photocatalysts toward the enhancement of photocatalytic activity under visible-light is crucial for a sustainable and clean future. In this paper, cation doping and heterojunction construction were synergistically used to synthesize g-C 3 N 4 matrix composite with a narrow band gap and low recombination rate of photogenerated electron-hole pairs. Potassium-doped-C 3 N 4 (KCN) was used as the matrix to construct semiconductor heterojunction with Cd 0.5 Zn 0.5 S (CZS) by hydrothermal method . The resulting composites were characterized through X-ray diffraction, infrared radiation, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, and ultraviolet–visible diffuse reflectance spectroscopy techniques to examine its phase structure, morphological, valance state and optical properties respectively. The photocatalytic performance of the samples evaluated by H 2 evolution and degrading the Rhodamine B (RhB) aqueous solution. After 12 h hydrothermal reaction at 140 °C, CZS particles uniformly distributed on the KCN matrix. The photocatalytic hydrogen production rate (HPR) of the sample loaded 24 wt% CZS (KCN/CZS 24 wt%) reaches 1.83 mmol/g·h which is 5.6 times of pristine g-C 3 N 4 . The degradation rate constant on RhB of KCN/CZS 24 wt% is ( k = 0.041 min −1 ) 7.9 times higher than g-C 3 N 4 . The enhanced photocatalytic activity can be attributed to the well-matched energy level of KCN and CZS as well as the extended light absorption of the composites.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2017
·
IF 3.387
Xinzhou Ma,Jingtao Zhang,Biao Wang,Qiuguo Li,Sheng Chu
Solar photoelectrochemical (PEC) hydrogen production is a promising way for solving energy and environment problems. Earth-abundant Cu 2 O is a potential light absorber for PEC hydrogen production. In this article, hierarchical porous Cu 2 O foams are prepared by thermal oxidation of the electrochemically deposited Cu foams. PEC performances of the Cu 2 O foams are systematically studied and discussed. Benefiting from their higher light harvesting and more efficient charge separation, the Cu 2 O foams demonstrate significantly enhanced photocurrents and photostability compared to their film counterparts. Moreover, by integrating g-C 3 N 4 , hierarchical Cu 2 O foam/g-C 3 N 4 composites are prepared with further improved photocurrent and photostability, appearing to be potential photocathodes for solar PEC hydrogen production. This study may provide a new and useful insight for the development of Cu 2 O-based photocathodes for PEC hydrogen production.
研究领域:
材料科学
·
可再生能源
✓ 已验证
DOI
高影响因子
Inorganics
·
2025
·Vol. 13
·期 3
·77
·
IF 3
Jinghang Li,Qi Shi,Chaoyu Song,Chenxi Shi,Yuguang Lv
To address challenges in antibiotic wastewater treatment, we synthesized a series of graphitic carbon nitride (g-C3N4)-based photocatalysts (BCN, PCN, TCN, BTCN, and TCNE-modified PTCN) via defect engineering. TCNE modification disrupted the triazine ring-bridging amino network in PTCN, forming a porous structure with enhanced specific surface area validated by SEM/TEM while retaining the graphene-like framework confirmed by XRD/FTIR. Photoluminescence (PL) analysis revealed prolonged photogenerated carrier lifetime and improved separation efficiency in PTCN, achieving 89.10% degradation of chlortetracycline hydrochloride under visible light—1.65-fold higher than pristine g-C3N4. Mechanistic studies identified superoxide radicals (•O2−) as dominant active species, generated via O2activation at defect sites and efficient electron-hole utilization. Optimized conditions enabled PTCN to maintain high activity across a broad pH range and retain 82.59% efficiency after five cycles. This work advances defect-engineered photocatalyst design for adaptable, high-performance antibiotic degradation, offering practical insights for wastewater remediation.
研究领域:
环境科学
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材料科学
·
生物学
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 2
·493
·
IF 4.2
Ligang Ma,Chao Lin,Wenjun Jiang,Shun Yan,Huilin Jiang,Xiang Song,Xiaoqian Ai,Xiaoxiao Cao,Yihuan Ding
Selective supported catalysts have emerged as a promising approach to enhance carrier separation, particularly in the realm of photocatalytic hydrogen production. Herein, a pioneering exploration involves the loading of PdS and Pt catalyst onto g-C3N4nanosheets to construct g-C3N4@PdS@Pt nanocomposites. The photocatalytic activity of nanocomposites was evaluated under visible light and full spectrum irradiation. The results show that g-C3N4@PdS@Pt nanocomposites exhibit excellent properties. Under visible light irradiation, these nanocomposites exhibit a remarkable production rate of 1289 μmol·g−1·h−1, marking a staggering 60-fold increase compared to g-C3N4@Pt (20.9 μmol·g−1·h−1). Furthermore, when subjected to full spectrum irradiation, the hydrogen production efficiency of g-C3N4@PdS@Pt-3 nanocomposites reaches an impressive 11,438 μmol·g−1·h−1, representing an eightfold enhancement compared to g-C3N4@Pt (1452 μmol·g−1·h−1) under identical conditions. Detailed investigations into the microstructure and optical properties of g-C3N4@PdS catalysts were conducted, shedding light on the mechanisms governing photocatalytic hydrogen production. This study offers valuable insights into the potential of these nanocomposites and their pivotal role in advancing photocatalysis.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ChemCatChem
·
2019
·Vol. 11
·期 24
·6372-6383
·
IF 4.495
Wenhua Ye,Jisong Hu,Xiaofeng Hu,Wenhua Zhang,Xinguo Ma,Huihu Wang
Graphical Photocatalysis : The traditional p–n junction charges transfer mode at the interface of CuInS 2 /g-C 3 N 4 can be switched to Z-scheme mode in CuInS 2 /Au/g-C 3 N 4 heterostructure through Au integration by weakening the built-in electric field and improving the interfacial bonding. Two dimensional (2D) heterojunction based on g-C 3 N 4 and CuInS 2 (CIS) nanosheets has been successfully constructed with the assistance of biomolecules L-cysteine. We demonstrated that a typical p–n junction charges transfer mode of CIS/PCN (protonated g-C 3 N 4 ) can be switched to Z-scheme transfer mode through the integration of Au by weakening the role of built-in electric field. The morphology of CIS/Au/PCN can be well adjusted through the formation of Au−S covalent bond and the electrostatic adsorption between Au and PCN during the hydrothermal process. Furthermore, the intimate interface contact inside CIS/Au/PCN heterojunction was indeed constructed, which may promote the charges separation and transfer process at the interface as evidenced by ESR spectra and time-resolved PL spectra. Under visible light illumination, the CIS/Au/PCN exhibited an enhanced CO (19.46 μmol/g) and CH 4 (1.18 μmol/g) yield in CO 2 reduction, which was about 5.04 times and 2.03 times higher than pure PCN. The composite heterojunction also showed excellent photocatalytic activity for tetracycline degradation with a 87 % degradation efficiency in 1 hour, which was 2.07 times higher than pure PCN. The experimental and theoretical calculation results demonstrated that an all-solid-state Z-scheme heterojunction was formed in the CIS/Au/PCN system, which was different from the typical p–n junction charges transfer mechanism in CIS/PCN.
研究领域:
材料科学
·
环境科学
·
化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2021
·
IF 6.707
Xin Li,Jingru Guan,Haopeng Jiang,Xianghai Song,Pengwei Huo,Huiqin Wang
Construction of multi-interface contact step-scheme (S-scheme) photocatalyst is a promising pathway to achieve high-electron transfer efficiency for photocatalytic CO 2 reduction. In this paper, g-C 3 N 4 nanosheets were selected as the main photocatalyst, rod-like CeO 2 (R-CeO 2 ) with unique Ce 4+ →Ce 3+ conversion property and rGO were loaded on the g-C 3 N 4 surface to construct 2D-1D-2D sandwich photocatalyst. The yields of CO and CH 4 were about 63.18 and 32.67 μmol/g after 4 h when the rGO/R-CeO 2 /g-C 3 N 4 was used as catalyst, which were about 4 and 6 times higher than that of pure CN, respectively. Cyclic experiments proved that the composite had excellent photocatalytic and material stability. Photoelectrochemical tests showed that the construction of S-scheme electron transfer model and the introduction of rGO can great enhance the electron transmission and separation of photogenerated electron-hole pairs. CO 2 adsorption test identified that the loading of R-CeO 2 and rGO obviously enhanced the CO 2 adsorption ability of pure g-C 3 N 4 . Density functional theory (DFT) calculations used to analyze the electron transfer path and the formation of the build-in electric field at the semiconductor interface. In-situ FTIR and 13 CO 2 element-tracer detection carried out to research the process of CO 2 photoreduction. A possible multi-interface contact S-scheme electron transfer mechanism for enhanced CO 2 photoreduction activity has been discussed.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
DALTON TRANSACTIONS
·
2013
·Vol. 43
·期 3
·982-989
·
IF 3.806
Bo Chai,Xiang Liao,Fakun Song,Huan Zhou
Fullerene modified C3N4 (C60/C3N4) composites with efficient photocatalytic activity under visible light irradiation were fabricated by a simple adsorption approach. The as-prepared C60/C3N4 composites were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), UV-vis diffuse reflectance absorption spectra (DRS), Fourier transform infrared spectroscopy (FTIR) and photoluminescence spectra (PL). The photocatalytic degradation of rhodamine B (RhB) by the C60/C3N4 composites was investigated and optimized, suggesting that the optimal amount of C60 in the composites was 1 wt%. The significantly enhanced photocatalytic activity could be attributed to the efficient separation of photogenerated electrons and holes in the C60/C3N4 composites. A possible mechanism of C60/C3N4 composites as photocatalysts was proposed.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
Catalysts
·
2024
·Vol. 14
·期 11
·756
·
IF 3.8
Xuekai Shan,Guolin Zhang,Ying Zhang,Shuobo Zhang,Fang Guo,Qi Xu
Selective CO2hydrogenation faces significant technical challenges, although many efforts have been made in this regard. Herein, a Ni-doped In2O3catalyst supported by g-C3N4was prepared using the co-precipitation method, and its composition, morphology, specific surface area, and band gap were characterized using TEM, XPS, BET, XRD, CO2-TPD, H2-TPR, UV-Vis, etc. The catalytic hydrogenation reduction of CO2to produce methanol was tested. Under low-photothermal conditions (1.0 MPa), the hydrogenation of carbon dioxide to methanol is stable, effective, and highly selective, with a spatiotemporal yield of 86.0 gMeOHh−1kgcat−1, which is 30.9% higher than that of Ni-In2O3without g-C3N4loading under the same conditions.
研究领域:
催化化学
·
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2024
·
IF 11.2
Songyu Yang,Kailin Wang,Zhen Wu,Yan Wu
Quantum dots/two-dimensional (0D/2D) semiconductor photocatalysts demonstrate wide solar light absorption region and high charge transfer efficiency. However, the relation between the interfacial electric field and the charge transfer during the photocatalytic hydrogen production process is still unclear. Here, we construct NiCo 2 O 4 quantum dots (QDs) and NiCo 2 O 4 nanoparticles (NPs) anchored with 2D g-C 3 N 4 (CN) to form NiCo 2 O 4 -QDs/CN and NiCo 2 O 4 -NPs/CN heterojunctions. The hydrogen production rate of CN loaded with NiCo 2 O 4 QDs is about 3 times higher than that of CN loaded with NiCo 2 O 4 NPs. The electric field intensity at the NiCo 2 O 4 -QDs/CN interface is calculated to be about 15,600 V cm −2 , about 9 times higher than that of NiCo 2 O 4 -NPs/CN, which could effectively drive the electrons of CN to flow toward NiCo 2 O 4 QDs, promoting photocarriers separation and hence greatly improving the photocatalytic performance. This work provides a method to understand the relationship between interfacial electric field strength and photogenerated charges of heterostructure photocatalysts.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
AUSTRALIAN JOURNAL OF CHEMISTRY
·
2016
·Vol. 70
·期 3
·271-279
·
IF 1.427
Pengfei Xing,Rongxiang Zhao,Xiuping Li,Xiaohan Gao
The ultra-deep desulfurization of fuel oil has become inevitable for environmental protection. Here, CoWO4/g-C3N4 was used as a catalyst, H2O2 as an oxidant, and 1-ethyl-3-methylimidazolium ethylsulfate ([EMIM][EtSO4], IL) as an extractant for the oxidative desulfurization of model oil. Scanning electron microscopy, FT-IR spectroscopy, N2 adsorption isotherms, and X-ray diffraction were used to confirm the morphology, structure, and properties of the catalysts. The influence of calcination temperature, loading dose of cobalt, amount of H2O2, reaction temperature, and other parameters were investigated. The removal rate of sulfide in model oil could reach 92.9 % at 80°C in 180 min under the optimal operation conditions (V(oil) = 5 mL, T = 80°C, m(catalyst) = 0.03 g, V(H2O2) = 0.4 mL, t = 180 min, V(IL) = 1.0 mL). In addition, the catalyst was reused five times with no significant reduction in the catalytic activity.
研究领域:
环境科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Environmental Chemical Engineering
·
2021
·
IF 5.909
Mengyang Xu,Xiaoxue Zhao,Haopeng Jiang,Songtao Chen,Pengwei Huo
Converting carbon dioxide into valuable chemicals is seen as a promising strategy for slowing global warming while enriching energy supplies. Photocatalysts derived from Metal-Organic Frameworks (MOFs) can not only overcome the problem of poor stability of MOFs, but also inherit the advantages of MOFs to some extent. Herein, carbon doped In 2 O 3 (C-In 2 O 3 ) hollow tubular is synthesized by calcination of MIL-68(In) as sacrificial template. Then C-In 2 O 3 and g-C 3 N 4 are hydrothermal to obtain C-In 2 O 3 /g-C 3 N 4 heterojunction . The unique hollow tubular structure, carbon doping and type-II heterojunction of C-In 2 O 3 /g-C 3 N 4 expand the light absorption capacity and promote the separation of photogenerated electron-hole pairs, thus significantly improve the activity of photocatalytic reduction of CO 2 . Among them, C-In 2 O 3 /g-C 3 N 4 -5 shows the highest CO 2 reduction activity towards CO (153.42 μmol/g/h) and CH 4 (110.31 μmol/g/h).
研究领域:
材料科学
·
环境科学
✓ 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）