Query：
学者姓名：张贵刚
Refining：
Year
Type
Indexed by
Source
Complex
Former Name
Co-
Language
Clean All
Abstract ：
Polymeric carbon nitrides (PCNs), usually the melon phase, have been extensively applied as photocatalysts for CO2 reduction; however, their performance is still unsatisfactory. The condensed allotrope, namely, poly(triazine imide) (PTI) with extended conjugation and a crystallized structure, indeed holds more favorable compositional and structural advantages for photocatalytic CO(2)reduction but remains to be fully exploited. Herein, hexagonal prism-shaped PTI crystals were synthesized and developed as a high-performance photocatalyst for CO2 reduction. With Co(bpy)(3) (2+) as a cocatalyst, the PTI crystals exhibit a CO evolution rate of 44 mu mol h(-1) (i.e., 1467 mu mol g(-1) h(-1)) with 93% selectivity, markedly superior to that of the melon counterpart. Moreover, PTI crystals manifest an apparent quantum efficiency of 12.9% at 365 nm, representing the state-of-the-art value by PCN photocatalysts for CO2-to-CO reduction without using noble metals. The surface pyridine N species of PTI are exposed as active sites to dominate CO2 activation and conversion, which, together with the high crystallinity to facilitate charge separation and transport, endows high CO2 reduction efficiency. In situ diffuse reflectance infrared Fourier transform spectroscopy determines the key intermediates during the CO2 reduction reaction and, consequently, constructs the possible reaction mechanism.
Keyword ：
active sites active sites carbon nitride carbon nitride CO2 reduction CO2 reduction photocatalysis photocatalysis poly(triazineimide) poly(triazineimide) pyridine nitrogen pyridine nitrogen
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Liu, Feng , Deng, Jing , Su, Bo et al. Poly(triazine imide) Crystals for Efficient CO2 Photoreduction: Surface Pyridine Nitrogen Dominates the Performance [J]. | ACS CATALYSIS , 2025 , 15 (2) : 1018-1026 . |
| MLA | Liu, Feng et al. "Poly(triazine imide) Crystals for Efficient CO2 Photoreduction: Surface Pyridine Nitrogen Dominates the Performance" . | ACS CATALYSIS 15 . 2 (2025) : 1018-1026 . |
| APA | Liu, Feng , Deng, Jing , Su, Bo , Peng, Kang-Shun , Liu, Kunlong , Lin, Xiahui et al. Poly(triazine imide) Crystals for Efficient CO2 Photoreduction: Surface Pyridine Nitrogen Dominates the Performance . | ACS CATALYSIS , 2025 , 15 (2) , 1018-1026 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The integration of electron donor (D) and acceptor (A) units into covalent organic frameworks (COFs) has received increasing interest due to its potential for efficient photocatalytic hydrogen (H2) evolution from water. Nevertheless, the advancement of D–A COFs is still constrained by the limited investigations on acceptor engineering, which enables the highly effective charge transfer pathways in COFs to deliver photoexcited electrons in a preferential orientation to enhance photocatalytic performance. Herein, two systems with D–A and D–A–A configurations based on the acceptor molecular engineering strategy are proposed to construct three distinct COFs. Specifically, TAPPy-DBTDP-COF merging one pyrene-based donor and two benzothiadiazole acceptors realized an average H2 evolution rate of 12.7 mmol h−1 g−1 under visible light, among the highest ever reported for typical D–A-type COF systems. The combination of experimental and theoretical analysis signifies the crucial role of the dual-acceptor arrangement in promoting exciton dissociation and carrier migration. These findings underscore the significant potential of D–A–A structural design, which is conducive to the efficient separation of photoexcited electrons and holes resulting in superior photocatalytic activities. © 2024 Wiley-VCH GmbH.
Keyword ：
covalent organic frameworks covalent organic frameworks donor-acceptor COFs donor-acceptor COFs H2 evolution H2 evolution photocatalysis photocatalysis
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Liu, N. , Xie, S. , Huang, Y. et al. Dual–Acceptor Engineering in Pyrene-Based Covalent Organic Frameworks for Boosting Photocatalytic Hydrogen Evolution [J]. | Advanced Energy Materials , 2024 , 14 (40) . |
| MLA | Liu, N. et al. "Dual–Acceptor Engineering in Pyrene-Based Covalent Organic Frameworks for Boosting Photocatalytic Hydrogen Evolution" . | Advanced Energy Materials 14 . 40 (2024) . |
| APA | Liu, N. , Xie, S. , Huang, Y. , Lu, J. , Shi, H. , Xu, S. et al. Dual–Acceptor Engineering in Pyrene-Based Covalent Organic Frameworks for Boosting Photocatalytic Hydrogen Evolution . | Advanced Energy Materials , 2024 , 14 (40) . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The development of effective, low-cost, and stable photocatalysts for visible-light-driven hydrogen production is desired but challenging. Herein, in the presence of a ternary eutectic salt mixture, poly(heptazine imide) with a crystalline-amorphous interface, is synthesized, which endows improved transfer of charge carriers and enhanced photocatalytic activity for hydrogen production. © 2024 American Chemical Society.
Keyword ：
charge separation charge separation hydrogen production hydrogen production photocatalysis photocatalysis poly(heptazine imide) poly(heptazine imide) water splitting water splitting
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wang, Q. , Li, S. , Zheng, D. et al. Prompt Charge Separation at Crystalline-Amorphous Interfaces of Poly(heptazine imides) for Photocatalytic Hydrogen Evolution [J]. | ACS Applied Energy Materials , 2024 , 7 (15) : 6090-6095 . |
| MLA | Wang, Q. et al. "Prompt Charge Separation at Crystalline-Amorphous Interfaces of Poly(heptazine imides) for Photocatalytic Hydrogen Evolution" . | ACS Applied Energy Materials 7 . 15 (2024) : 6090-6095 . |
| APA | Wang, Q. , Li, S. , Zheng, D. , Wang, S. , Hou, Y. , Zhang, G. . Prompt Charge Separation at Crystalline-Amorphous Interfaces of Poly(heptazine imides) for Photocatalytic Hydrogen Evolution . | ACS Applied Energy Materials , 2024 , 7 (15) , 6090-6095 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Sunlight-induced photocatalytic carbon dioxide(CO2)reduction to energy-rich chemicals by metal-free polymeric carbon nitride(CN)semiconductor is a promising tactic for sustained solar fuel production.However,the reaction efficiency of CO2 photoreduction is restrained seriously by the rapid recombination of photogenerated carriers on CN polymer.Herein,we incorporate 2-aminopyridine molecule with strong electron-withdrawing group into the skeleton edge of CN layers through a facile one-pot thermal polymerization strategy using urea as the precursor,which renders a modified carbon nitride(ACN)with extended optical harvesting,abundant nitrogen defects and ultrathin nanosheet structure.Consequently,the ACN photocatalyst with desirable structural features attains enhanced separation and migration of photoexcited charge carriers.Under visible light irradiation with Co(bpy)32+as a cocatalyst,the optimized ACN sample manifests a high CO2 deoxygnative reduction activity and high sta-bility,providing a CO yielding rate of 17 μmol h-1,which is significantly higher than that of pristine CN.The key intermediates engaged in CO2 photoreduction reaction are determined by the in situ diffuse reflectance infrared Fourier transform spectroscopy,which sponsors the construction of the possible photocatalytic CO2 reduction mechanism on ACN nanosheets.
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Ziruo Zhou , Wenyu Guo , Tingyu Yang et al. Defect and nanostructure engineering of polymeric carbon nitride for visible-light-driven CO2 reduction [J]. | 结构化学 , 2024 , 43 (3) : 10-18 . |
| MLA | Ziruo Zhou et al. "Defect and nanostructure engineering of polymeric carbon nitride for visible-light-driven CO2 reduction" . | 结构化学 43 . 3 (2024) : 10-18 . |
| APA | Ziruo Zhou , Wenyu Guo , Tingyu Yang , Dandan Zheng , Yuanxing Fang , Xiahui Lin et al. Defect and nanostructure engineering of polymeric carbon nitride for visible-light-driven CO2 reduction . | 结构化学 , 2024 , 43 (3) , 10-18 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
The development of effective, low-cost, and stable photocatalysts for visible-light-driven hydrogen production is desired but challenging. Herein, in the presence of a ternary eutectic salt mixture, poly(heptazine imide) with a crystalline-amorphous interface, is synthesized, which endows improved transfer of charge carriers and enhanced photocatalytic activity for hydrogen production.
Keyword ：
charge separation charge separation hydrogen production hydrogen production photocatalysis photocatalysis poly(heptazineimide) poly(heptazineimide) water splitting water splitting
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Wang, Qian , Li, Shiyao , Zheng, Dandan et al. Prompt Charge Separation at Crystalline-Amorphous Interfaces of Poly(heptazine imides) for Photocatalytic Hydrogen Evolution [J]. | ACS APPLIED ENERGY MATERIALS , 2024 , 7 (15) : 6090-6095 . |
| MLA | Wang, Qian et al. "Prompt Charge Separation at Crystalline-Amorphous Interfaces of Poly(heptazine imides) for Photocatalytic Hydrogen Evolution" . | ACS APPLIED ENERGY MATERIALS 7 . 15 (2024) : 6090-6095 . |
| APA | Wang, Qian , Li, Shiyao , Zheng, Dandan , Wang, Sibo , Hou, Yidong , Zhang, Guigang . Prompt Charge Separation at Crystalline-Amorphous Interfaces of Poly(heptazine imides) for Photocatalytic Hydrogen Evolution . | ACS APPLIED ENERGY MATERIALS , 2024 , 7 (15) , 6090-6095 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Polymeric carbon nitride has been widely developed as a promising photocatalyst for solar hydrogen production via photocatalytic water splitting. However, pristine carbon nitride prepared by traditional solid-state polymerization usually encounters issues such as rapid carrier recombination and insufficient absorption of visible light below 460 nm. Herein, poly(heptazine imide) with a distinctive nanoplate structure was synthesized in a binary molten salt of NaCl-CaCl2. The salt template allows the formation of the thin nanoplate structure, which promotes the charge separation and migration. Besides, the intercalation of Ca2+ ions between the conjugated layers endows the activation of n-pi* electron transition due to the distortion of in-plane heptazine layers. Accordingly, the optimized poly(heptazine imide) nanoplates achieve an apparent quantum efficiency of up to 17.3% at 500 nm for photocatalytic hydrogen production from water. This work shares new idea for rational control of the optical absorption and charge carrier dynamics of poly(heptazine imide).
Keyword ：
hydrogen production hydrogen production ion intercalation ion intercalation nanoplates nanoplates photocatalysis photocatalysis poly heptazine imide poly heptazine imide
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zou, Yanmin , Li, Shiyao , Zheng, Dandan et al. Extended light absorption and accelerated charge migration in ultrathin twisted carbon nitride nanoplates for efficient solar hydrogen production [J]. | SCIENCE CHINA-CHEMISTRY , 2024 , 67 (7) : 2215-2223 . |
| MLA | Zou, Yanmin et al. "Extended light absorption and accelerated charge migration in ultrathin twisted carbon nitride nanoplates for efficient solar hydrogen production" . | SCIENCE CHINA-CHEMISTRY 67 . 7 (2024) : 2215-2223 . |
| APA | Zou, Yanmin , Li, Shiyao , Zheng, Dandan , Feng, Jianyong , Wang, Sibo , Hou, Yidong et al. Extended light absorption and accelerated charge migration in ultrathin twisted carbon nitride nanoplates for efficient solar hydrogen production . | SCIENCE CHINA-CHEMISTRY , 2024 , 67 (7) , 2215-2223 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Surface functionalization has been considered as an effective strategy to manipulate charge separation of carbon nitride and therefore to largely improve the photocatalytic H 2 evolution efficiency. Poly heptazine imide (PHI) is a new class of crystalline carbon nitride frameworks that exhibits remarkable photocatalytic performance for hydrogen evolution. To further improve the H 2 evolution performance of PHI and explore the reaction mechanism, ammonium thiocyanate was used as a precursor for the synthesis of poly heptazine imide at elevated temperatures under molten salt conditions. The optimized PHI with an abundance of surface cyano groups shows a significantly enhanced photocatalytic performance for H 2 evolution, which is 4.3 times that on pristine PCN. Most importantly, the surface cyano group adjusts the electron intensity of the polymeric framework, enhances the light absorbance, reduces the bandgap, and improves the charge separation efficiency. The synthetic technique also could be applied to other sulfur -containing precursors for the synthesis of PHI frameworks with excellent hydrogen evolution production performance.
Keyword ：
Ammonium thiocyanate Ammonium thiocyanate Cyano group Cyano group Hydrogen evolution Hydrogen evolution Photocatalysis Photocatalysis Poly heptazine imide Poly heptazine imide
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zhang, Yuhan , Yang, Zhenchun , Zheng, Dandan et al. Surface cyano groups optimize the charge transfer of poly heptazine imide for enhanced photocatalytic H 2 evolution [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2024 , 69 : 372-380 . |
| MLA | Zhang, Yuhan et al. "Surface cyano groups optimize the charge transfer of poly heptazine imide for enhanced photocatalytic H 2 evolution" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 69 (2024) : 372-380 . |
| APA | Zhang, Yuhan , Yang, Zhenchun , Zheng, Dandan , Wang, Sibo , Hou, Yidong , Anpo, Masakazu et al. Surface cyano groups optimize the charge transfer of poly heptazine imide for enhanced photocatalytic H 2 evolution . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2024 , 69 , 372-380 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Solar-driven photocatalytic overall water splitting represents a sustainable strategy to produce green hydrogen using metal-free polymeric carbon nitride. However, conventional thermal polymerization with a single precursor for the synthesis of poly (triazine imide) faces challenges such as slow deamination rates and mass transfer, resulting in the formation of undesired structural defects, which usually serve as charge recombination sites and decrease the photocatalytic performance. Herein, highly crystalline poly (triazine imide) by thermal copolymerization of binary precursors of melamine and cyanuric acid in the presence of molten salts is reported. The results reveal that melamine and cyanuric acid easily generate melam (intermediates of carbon nitride) and subsequently facilitate the polycondensation process. Solid characterizations revealed that crystalline poly (triazine imide) nanoplates with extended pi-conjugation degrees and reduced intensity of structural defects would be obtained, which largely promotes separation and migration of photogenerated carriers, and inhibits the undesirable charge recombination at the defect sites. Accordingly, after in situ photo-deposition of CoOx and Pt/Cr2O3 as O2 and H2 evolution co-catalysts, respectively, the optimized crystalline poly (triazine imide) nanoplates achieve an excellent solar-to-hydrogen conversion of 0.30% under simulated sunlight irradiation.
Keyword ：
charge transfer charge transfer hydrogen production hydrogen production photocatalytic overall water splitting photocatalytic overall water splitting polymeric carbon nitride polymeric carbon nitride poly (triazine imide) poly (triazine imide)
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Zou, Guirong , Wang, Qian , Ye, Gui et al. Copolymerization of Poly (Triazine Imide) Single Crystal Nanoplates with Enhanced Charge Transfer for Efficient Photocatalytic Overall Water Splitting [J]. | ADVANCED FUNCTIONAL MATERIALS , 2024 . |
| MLA | Zou, Guirong et al. "Copolymerization of Poly (Triazine Imide) Single Crystal Nanoplates with Enhanced Charge Transfer for Efficient Photocatalytic Overall Water Splitting" . | ADVANCED FUNCTIONAL MATERIALS (2024) . |
| APA | Zou, Guirong , Wang, Qian , Ye, Gui , Pan, Zhiming , Wang, Sibo , Anpo, Masakazu et al. Copolymerization of Poly (Triazine Imide) Single Crystal Nanoplates with Enhanced Charge Transfer for Efficient Photocatalytic Overall Water Splitting . | ADVANCED FUNCTIONAL MATERIALS , 2024 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
In this work, protonated poly(heptazine imide) (H-PHI) was obtained by adding acid to the suspension of potassium PHI (K-PHI) in ethanol. It was established that the obtained H-PHI demonstrates very high photocatalytic activity in the reaction of hydrogen formation from ethanol in the presence of Pt nanoparticles under visible light irradiation in comparison with K-PHI. This enhancement can be attributed to improved efficiency of photogenerated charge transfer to the photocatalyst's surface, where redox processes occur. Various factors influencing the system's activity were evaluated. Notably, it was discovered that the conditions of acid introduction into the system can significantly affect the size of Pt (cocatalyst metal) deposition on the H-PHI surface, thereby enhancing the photocatalytic system's stability in producing molecular hydrogen. It was established that the system can operate efficiently in the presence of air without additional components on the photocatalyst surface to block air access. Under optimal conditions, the apparent quantum yield of molecular hydrogen production at 410 nm is around 73%, the highest reported value for carbon nitride materials to date. The addition of acid not only increases the activity of the reduction part of the system but also leads to the formation of a value-added product from ethanol-1,1-diethoxyethane (acetal) with high selectivity.
Keyword ：
hydrogen evolution hydrogen evolution nanostructure nanostructure organic synthesis organic synthesis photocatalysis photocatalysis protonated poly(heptazine imide) protonated poly(heptazine imide) salt melt treatment salt melt treatment visible light visible light
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Shvalagin, Vitaliy , Tarakina, Nadezda , Badamdorj, Bolortuya et al. Simultaneous Photocatalytic Production of H2 and Acetal from Ethanol with Quantum Efficiency over 73% by Protonated Poly(heptazine imide) under Visible Light [J]. | ACS CATALYSIS , 2024 , 14 (19) : 14836-14854 . |
| MLA | Shvalagin, Vitaliy et al. "Simultaneous Photocatalytic Production of H2 and Acetal from Ethanol with Quantum Efficiency over 73% by Protonated Poly(heptazine imide) under Visible Light" . | ACS CATALYSIS 14 . 19 (2024) : 14836-14854 . |
| APA | Shvalagin, Vitaliy , Tarakina, Nadezda , Badamdorj, Bolortuya , Lahrsen, Inga-Marie , Bargiacchi, Eleonora , Bardow, Andre et al. Simultaneous Photocatalytic Production of H2 and Acetal from Ethanol with Quantum Efficiency over 73% by Protonated Poly(heptazine imide) under Visible Light . | ACS CATALYSIS , 2024 , 14 (19) , 14836-14854 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Abstract ：
Poly(heptazine imide) (PHI), a semicrystalline version of carbon nitride photocatalyst based on heptazine units, has gained significant attention for solar H2 production benefiting from its advantages including molecular synthetic versatility, excellent physicochemical stability and suitable energy band structure to capture visible photons. Typically, PHI is obtained in salt-melt synthesis in the presence of alkali metal chlorides. Herein, we examined the role of binary alkali metal bromides (LiBr/NaBr) with diverse compositions and melting points to rationally modulate the polymerization process, structure, and properties of PHI. Solid characterizations revealed that semicrystalline PHI with a condensed pi-conjugated system and rapid charge separation rates were obtained in the presence of LiBr/NaBr. Accordingly, the apparent quantum yield of hydrogen using the optimized PHI reaches up to 62.3% at 420 nm. The density functional theory calculation shows that the dehydrogenation of the ethylene glycol has a lower energy barrier than the dehydrogenation of the other alcohols from the thermodynamic point of view. This study holds great promise for rational modulation of the structure and properties of conjugated polymeric materials. A new poly(heptazine imide) was synthesized via salt-melt synthesis in binary alkali metal bromides with accelerated carrier transfer and decreased internal structural defects for photocatalytic hydrogen production. image
Keyword ：
crystallinity crystallinity hydrogen evolution hydrogen evolution photocatalysis photocatalysis poly(heptazine imide) poly(heptazine imide) salt-melt synthesis salt-melt synthesis
Cite：
Copy from the list or Export to your reference management。
| GB/T 7714 | Jin, Yaxuan , Zheng, Dandan , Fang, Zhongpu et al. Salt-melt synthesis of poly(heptazine imide) in binary alkali metal bromides for enhanced visible-light photocatalytic hydrogen production [J]. | INTERDISCIPLINARY MATERIALS , 2024 , 3 (3) : 389-399 . |
| MLA | Jin, Yaxuan et al. "Salt-melt synthesis of poly(heptazine imide) in binary alkali metal bromides for enhanced visible-light photocatalytic hydrogen production" . | INTERDISCIPLINARY MATERIALS 3 . 3 (2024) : 389-399 . |
| APA | Jin, Yaxuan , Zheng, Dandan , Fang, Zhongpu , Pan, Zhiming , Wang, Sibo , Hou, Yidong et al. Salt-melt synthesis of poly(heptazine imide) in binary alkali metal bromides for enhanced visible-light photocatalytic hydrogen production . | INTERDISCIPLINARY MATERIALS , 2024 , 3 (3) , 389-399 . |
| Export to | NoteExpress RIS BibTex |
Version ：
Export
| Results： |
Selected to |
| Format： |
