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学者姓名：郑丹丹
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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 stability, providing a CO yielding rate of 17 mu mol 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.
Keyword ：
Carbon nitride Carbon nitride CO2 reduction CO2 reduction Nanosheets Nanosheets Nitrogen defects Nitrogen defects Photocatalysis Photocatalysis
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| GB/T 7714 | Zhou, Ziruo , Guo, Wenyu , Yang, Tingyu et al. Defect and nanostructure engineering of polymeric carbon nitride for visible-light-driven CO2 reduction [J]. | CHINESE JOURNAL OF STRUCTURAL CHEMISTRY , 2024 , 43 (3) . |
| MLA | Zhou, Ziruo et al. "Defect and nanostructure engineering of polymeric carbon nitride for visible-light-driven CO2 reduction" . | CHINESE JOURNAL OF STRUCTURAL CHEMISTRY 43 . 3 (2024) . |
| APA | Zhou, Ziruo , Guo, Wenyu , Yang, Tingyu , Zheng, Dandan , Fang, Yuanxing , Lin, Xiahui et al. Defect and nanostructure engineering of polymeric carbon nitride for visible-light-driven CO2 reduction . | CHINESE JOURNAL OF STRUCTURAL CHEMISTRY , 2024 , 43 (3) . |
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Hydrogen peroxide (H2O2) plays a crucial role in various applications, such as green oxidation processes and the production of high-quality fuels. Currently, H2O2 is primarily manufactured using the indirect anthraquinone method, known for its significant energy consumption and the generation of intensive by-products. Extensive research has been conducted on the photocatalytic production of H(2)O(2)via oxygen reduction reaction (ORR), with polymeric carbon nitride (PCN) emerging as a promising catalyst for this conversion. This review article is organized around two approaches. The first part main consists of the chemical optimization of the PCN structure, while the second focuses on the physical integration of PCN with other functional materials. The objective is to clarify the correlation between the physicochemical properties of PCN photocatalysts and their effectiveness in H2O2 production. Through a thorough review and analysis of the findings, this article seeks to stimulate new insights and achievements, not only in the domain of H2O2 production via ORR but also in other redox reactions.
Keyword ：
H2O2 H2O2 Hybrid structure Hybrid structure Oxygen reduction reaction Oxygen reduction reaction Photocatalysis Photocatalysis Polymeric carbon nitride Polymeric carbon nitride
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| GB/T 7714 | Zheng, Dandan , Wu, Yahan , Yang, Xintuo et al. Developing Polymeric Carbon Nitrides for Photocatalytic H2O2 Production [J]. | CHEMSUSCHEM , 2024 , 17 (20) . |
| MLA | Zheng, Dandan et al. "Developing Polymeric Carbon Nitrides for Photocatalytic H2O2 Production" . | CHEMSUSCHEM 17 . 20 (2024) . |
| APA | Zheng, Dandan , Wu, Yahan , Yang, Xintuo , Wang, Sibo , Fang, Yuanxing . Developing Polymeric Carbon Nitrides for Photocatalytic H2O2 Production . | CHEMSUSCHEM , 2024 , 17 (20) . |
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| GB/T 7714 | Zheng, Dandan , Wang, Qian , Pan, Zhiming et al. Poly(triazine imide) nanospheres with spatially exposed prismatic facets for photocatalytic overall water splitting [J]. | SCIENCE CHINA-MATERIALS , 2024 , 67 (6) : 1900-1906 . |
| MLA | Zheng, Dandan et al. "Poly(triazine imide) nanospheres with spatially exposed prismatic facets for photocatalytic overall water splitting" . | SCIENCE CHINA-MATERIALS 67 . 6 (2024) : 1900-1906 . |
| APA | Zheng, Dandan , Wang, Qian , Pan, Zhiming , Wang, Sibo , Hou, Yidong , Zhang, Guigang . Poly(triazine imide) nanospheres with spatially exposed prismatic facets for photocatalytic overall water splitting . | SCIENCE CHINA-MATERIALS , 2024 , 67 (6) , 1900-1906 . |
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Diabetes remains a significant chronic disease, with its prevalence projected to exceed 700 million by 2045. Monitoring glucose levels through conventional methods is crucial for mitigating the associated health risks. In this study, NiTiO3 films are loaded on TiO2 nanorods to create photoanodes, which are applied for glucose detection using near-infrared (NIR) light illumination. This approach achieved a detection limit of 0.01 mM with selectivity reaching up to 95%. Additionally, the long-term stability was confirmed for at least 16 weeks. This study demonstrates the potential of using NiTiO3-based nanomaterials as an NIR-driven sensor for glucose detection.
Keyword ：
glucose detector glucose detector infrared infrared nickel titanate nickel titanate oxidation reaction oxidation reaction photoanode photoanode TiO2 nanorods TiO2 nanorods
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| GB/T 7714 | Wu, Yahan , Zhang, Jiaqi , Zhao, Shun et al. Integration of NiTiO3 Films onto TiO2 Nanorods as Photoanodes for Glucose Detection with Near-Infrared Light [J]. | ACS APPLIED NANO MATERIALS , 2024 , 7 (19) : 22684-22693 . |
| MLA | Wu, Yahan et al. "Integration of NiTiO3 Films onto TiO2 Nanorods as Photoanodes for Glucose Detection with Near-Infrared Light" . | ACS APPLIED NANO MATERIALS 7 . 19 (2024) : 22684-22693 . |
| APA | Wu, Yahan , Zhang, Jiaqi , Zhao, Shun , Li, Yueping , Cai, Pingru , Zheng, Dandan et al. Integration of NiTiO3 Films onto TiO2 Nanorods as Photoanodes for Glucose Detection with Near-Infrared Light . | ACS APPLIED NANO MATERIALS , 2024 , 7 (19) , 22684-22693 . |
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Poly (heptazine imide) (PHI), a classic 2D polymeric photocatalyst, represents a promising organic semiconductor for photocatalytic overall water splitting (POWS). However, since the key bottleneck in POWS of PHI remains unclear, its quantum efficiency of POWS is extremely restrained. To identify the key obstacle in POWS on the PHI, a series of PHI with different stacking modes is synthesized by tuning interlayer cations. The structural characterizations revealed that tuning the interlayer cations of PHI can induce rearrangements in interlayer stacking modes. Additionally, charge carriers dynamics uncover that optimizing the interlayer stacking modes of PHI can promote exciton diffusion and prolong the photoexcited electron lifetimes, thus improving the concentration of surface-reaching charge. More importantly, this confirms that the POWS activity of PHI is closely correlated with the interlayer stacking modes. This work offers new insight into structural regulation for governing charge-transport dynamics and the activity of 2D polymeric photocatalysts.
Keyword ：
charge transport charge transport interlayer stacking modes interlayer stacking modes overall water splitting overall water splitting photocatalysis photocatalysis poly (heptazine imide) poly (heptazine imide)
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| GB/T 7714 | Pan, Zhiming , Zhang, Guigang , Zhang, Xirui et al. Unveiling the Key Obstacle in Photocatalytic Overall Water Splitting Reaction on Poly (heptazine imide) Semiconductors [J]. | SMALL , 2024 , 21 (1) . |
| MLA | Pan, Zhiming et al. "Unveiling the Key Obstacle in Photocatalytic Overall Water Splitting Reaction on Poly (heptazine imide) Semiconductors" . | SMALL 21 . 1 (2024) . |
| APA | Pan, Zhiming , Zhang, Guigang , Zhang, Xirui , Xing, Wandong , Zheng, Dandan , Wang, Sibo et al. Unveiling the Key Obstacle in Photocatalytic Overall Water Splitting Reaction on Poly (heptazine imide) Semiconductors . | SMALL , 2024 , 21 (1) . |
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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
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| 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 . |
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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.
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| 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 . |
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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
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| 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 . |
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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
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| 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 . |
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Hydrogen sulfide (H2S) is considered to be a broad-spectrum toxicant, and it is crucial to address this problem due to its serious health and climate change impacts. Photocatalysis can be effectively applied for the reduction of H2S molecules to S and other products. We synthesized sandwich-structured composite materials with internally immobilized SiO2 nanospheres and externally wrapped COF layers co-modified with iron oxide nanoparticles. Furthermore, originally looked at the efficiency of photocatalysis in reducing hydrogen sulfide to sulfur. In this paper, a sandwich structure of core-shell composite photocatalysts based on SiO2 was prepared by a multi-step method including Sto center dot ber and double ligand-regulated solvent heat, and these sandwich core-shell structures exhibited high hydrogen sulfide reduction and stability in applications. In addition, characterization, degradation studies, active substance trapping studies, and energy band structure analysis showed that S-type heterojunctions could effectively increase photo-generated carrier separation. This research advanced knowledge of photocatalytic hydrogen sulfide reduction and offered a novel approach for catalysts in COF sandwich cor-e-shell structures.
Keyword ：
Core-shell Core-shell Covalent organic framework Covalent organic framework Nanocomposite shells Nanocomposite shells Sandwich structure Sandwich structure
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| GB/T 7714 | Pan, Yimin , Huang, Zhongcheng , Zheng, Dandan et al. Interface engineering of sandwich SiO2@alpha-Fe2O3@COF core-shell S-scheme heterojunctions for efficient photocatalytic oxidation of gas-phase H2S [J]. | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2023 , 644 : 19-28 . |
| MLA | Pan, Yimin et al. "Interface engineering of sandwich SiO2@alpha-Fe2O3@COF core-shell S-scheme heterojunctions for efficient photocatalytic oxidation of gas-phase H2S" . | JOURNAL OF COLLOID AND INTERFACE SCIENCE 644 (2023) : 19-28 . |
| APA | Pan, Yimin , Huang, Zhongcheng , Zheng, Dandan , Yang, Can . Interface engineering of sandwich SiO2@alpha-Fe2O3@COF core-shell S-scheme heterojunctions for efficient photocatalytic oxidation of gas-phase H2S . | JOURNAL OF COLLOID AND INTERFACE SCIENCE , 2023 , 644 , 19-28 . |
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