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学者姓名：孙再成
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Abstract ：
As a novel class of zero-dimensional carbon-based nanomaterials，carbon dots（CDs）have demonstrated broad application prospects in bioimaging，optoelectronic devices，and environmental sensing due to their tunable luminescence，low toxicity，and versatile functionality. However，the luminescence mechanisms of CDs remain a central research focus owing to diverse synthesis methods，varied raw material sources，and complex composition-structure characteristics. The elusive nature luminescence mechanism has hindered the rational design and application of CDs with superior fluorescence performance. This article systematically investigates the correlation between the structural characteristics and luminescence mechanisms of CDs，with focused analysis on the roles of five core mechanisms：quantum confinement effect，effective conjugate length，surface-edge states，molecular states，and cross-link enhanced emission effects. The comprehensive analysis aims to provide theoretical guidance for the controlled synthesis and functional applications of CDs with superior fluorescence performance. © 2025 Higher Education Press Limited Company. All rights reserved.
Keyword ：
Nanocomposites Nanocomposites Luminescence of organic solids Luminescence of organic solids Nanocrystalline materials Nanocrystalline materials Carbon nanotubes Carbon nanotubes Luminescence of inorganic solids Luminescence of inorganic solids Carbon clusters Carbon clusters Scintillation Scintillation Cyclization Cyclization Carbon Quantum Dots Carbon Quantum Dots
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| GB/T 7714 | Liu, Yize , Li, Pengfei , Sun, Zaicheng . Correlation Between the Photoluminescene Mechanism and Structure of Carbon Dots [J]. | Chemical Journal of Chinese Universities , 2025 , 46 (6) . |
| MLA | Liu, Yize 等. "Correlation Between the Photoluminescene Mechanism and Structure of Carbon Dots" . | Chemical Journal of Chinese Universities 46 . 6 (2025) . |
| APA | Liu, Yize , Li, Pengfei , Sun, Zaicheng . Correlation Between the Photoluminescene Mechanism and Structure of Carbon Dots . | Chemical Journal of Chinese Universities , 2025 , 46 (6) . |
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Abstract ：
Metal-oxide interfaces play a prominent role in heterogeneous catalysis. Tailoring the metal-oxide interfaces effectively enhance the catalytic activities and thermal stability of noble metal catalysts. In this work, polyvinyl alcohol-protected reduction and L-arginine induction methods are adopted to prepare Pd catalysts (Pd/Al2O3-xCeO2) that are selectively decorated by CeO2, which form core-shell-like structures and generate more Pd-CeO2 interfacial sites, so that the three-way catalytic activity of Pd/Al2O3-xCeO2 catalysts is obviously significantly enhanced due to more adsorption oxygen at the interface of Pd-CeO2 and good low-temperature reducibility. At the moment, the Pd/Al2O3-xCeO2 catalysts exhibit excellent thermal stability after being calcined at 900 degrees C for 5 h, owing to the Pd species being highly redispersed on CeO2 and part of the Pd species being incorporated into the lattice of CeO2. This is a major reason for the Pd/Al2O3-xCeO2 catalysts to maintain high catalytic activity after aging at high temperatures. It is concluded that the metal-oxide interfaces and the interaction between Pd NPs and CeO2 are responsible for the excellent catalytic performance and stability of Pd/Al2O3-xCeO2 catalysts in three-way reactions.
Keyword ：
metal-oxide interface metal-oxide interface three-way catalytic activity three-way catalytic activity selectively coating selectively coating thermal stability thermal stability
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| GB/T 7714 | Liu, Ziwen , Zhang, Guizhen , Niu, Lijuan et al. Tailoring Metal-Oxide Interfaces via Selectively CeO2-Decorated Pd Nanocatalysts with Enhanced Catalytic Performance [J]. | NANOMATERIALS , 2025 , 15 (3) . |
| MLA | Liu, Ziwen et al. "Tailoring Metal-Oxide Interfaces via Selectively CeO2-Decorated Pd Nanocatalysts with Enhanced Catalytic Performance" . | NANOMATERIALS 15 . 3 (2025) . |
| APA | Liu, Ziwen , Zhang, Guizhen , Niu, Lijuan , Sun, Zaicheng , Li, Zhenguo , He, Hong . Tailoring Metal-Oxide Interfaces via Selectively CeO2-Decorated Pd Nanocatalysts with Enhanced Catalytic Performance . | NANOMATERIALS , 2025 , 15 (3) . |
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Abstract ：
Dual-atom catalysts (DACs) are promising for various catalytic reactions. However, synthesis challenges have hindered their development. Herein, we propose a universal approach using photoinduced ligand exchange (PILE) to create DACs with high proportions of dual-atom pairs, fixed interatomic distances, and tunable metal ratios and types. By cocrystallizing two metal acetylacetonates on graphitic carbon nitride (CN) nanosheets, the metal types and ratios in DACs can be precisely controlled. Remarkably, over 90% of dual-atom pairs follow the metal atom distances of 2.4 and 7.3 & Aring;. During the photocatalytic H2 production, the heteronuclear DAC (Pt1Pd2/CN) delivers a performance of similar to 15.9 mmolg-1h-1 under AM1.5 light irradiation due to the electron synergistic effect, which overperforms not only the single-atom catalysts (Pt/CN and Pd/CN) but also the homonuclear DACs (PtPt/CN and PdPd/CN). X-ray photoelectron spectroscopy (XPS), X-ray absorption near-edge structure (XANES), and density functional theory (DFT) calculations reveal that Pt draws electrons from Pd, modulating its charge state, lowering the d-orbital center and approaching the more proper H adsorption free energy, thereby enhancing H2 production. As a pioneering strategy, PILE offers a straightforward and powerful route to synthesize both homonuclear and heteronuclear DACs, holding immense promise for revolutionizing a broad spectrum of catalytic applications.
Keyword ：
photocatalyst photocatalyst photoinduced ligand exchange photoinduced ligand exchange dual-atom catalyst dual-atom catalyst PtPd/carbon nitride PtPd/carbon nitride electron synergistic effect electron synergistic effect
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| GB/T 7714 | Pang, Yamei , Zhang, Xu , Li, Pengfei et al. Developing Dual-Atom Catalysts with Tunable Electron Synergistic Effect via Photoinduced Ligand Exchange Strategy [J]. | ACS CATALYSIS , 2025 , 15 (2) : 1061-1072 . |
| MLA | Pang, Yamei et al. "Developing Dual-Atom Catalysts with Tunable Electron Synergistic Effect via Photoinduced Ligand Exchange Strategy" . | ACS CATALYSIS 15 . 2 (2025) : 1061-1072 . |
| APA | Pang, Yamei , Zhang, Xu , Li, Pengfei , Xia, Guang-Jie , Zong, Xupeng , Liu, Yichang et al. Developing Dual-Atom Catalysts with Tunable Electron Synergistic Effect via Photoinduced Ligand Exchange Strategy . | ACS CATALYSIS , 2025 , 15 (2) , 1061-1072 . |
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Abstract ：
The production of freshwater from seawater via solar energy is currently a hot research topic. Nonetheless, the accumulation of salt on the evaporator's surface during the evaporation process significantly impedes both the rate and efficiency of water evaporation. Consequently, there is an urgent necessity to ingeniously design the evaporator structure in order to mitigate salt precipitation, marking a critical challenge in device engineering. This study presents a pioneering 3D micro-lattice structural hydrogel evaporator, meticulously crafted utilizing state-of-the-art 3D printing technology, tailored expressly for the solar desalination of highly saline waters. Its hierarchical porous architecture amplifies water transportation and light absorption capabilities, concurrently enabling swift relocation of salt ions away from the evaporative surface, thereby thwarting salt buildup. Remarkably, the hydrogel preserves its structural robustness amidst high-concentration brine environments and fosters proficient heat concentration at the air-water interface, yielding freshwater output rates surpassing 3.5 kg m- 2 h-1 even under stringent conditions of 20 wt% NaCl solutions, exhibiting unparalleled performance and durability across multiple operational cycles. This research paves the way for sustainable and efficient solar desalination systems, showcasing the potential of micro-lattice structures in hydrogels for enhanced salt rejection and improved water recovery rates in challenging environments.
Keyword ：
Hydrogel Hydrogel 3D printing 3D printing Salt resistance Salt resistance 3D micro lattice diamond cell 3D micro lattice diamond cell Solar evaporation device Solar evaporation device
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| GB/T 7714 | Li, Xiangqin , Liu, Wenning , Men, Geyang et al. 3D micro-lattice structural hydrogel evaporator with super salt resistance for solar desalination of high-salinity [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 502 . |
| MLA | Li, Xiangqin et al. "3D micro-lattice structural hydrogel evaporator with super salt resistance for solar desalination of high-salinity" . | CHEMICAL ENGINEERING JOURNAL 502 (2024) . |
| APA | Li, Xiangqin , Liu, Wenning , Men, Geyang , Liu, Yichang , An, Li , Qu, Dan et al. 3D micro-lattice structural hydrogel evaporator with super salt resistance for solar desalination of high-salinity . | CHEMICAL ENGINEERING JOURNAL , 2024 , 502 . |
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Abstract ：
Acetic acid (AA), a vital compound in chemical production and materials manufacturing, is conventionally synthesized by starting with coal or methane through multiple steps including high-temperature transformations. Here we present a new synthesis of AA from ethane through photocatalytic selective oxidation of ethane by H2O2 at 0-25 degrees C. The catalyst designed for this process comprises g-C3N4 with anchored Pd1 single-atom sites. In situ studies and computational simulation suggest the immobilized Pd1 atom becomes positively charged under photocatalytic condition. Under photoirradiation, the holes on the Pd1 single-atom of OH-Pd1 circle plus ${{}<^>{\oplus }}$ /g-C3N4 serves as a catalytic site for activating a C-H instead of C-C of C2H6 with a low activation barrier of 0.14 eV, through a concerted mechanism. Remarkably, the selectivity for synthesizing AA reaches 98.7 %, achieved under atmospheric pressure of ethane at 0 degrees C. By integrating photocatalysis with thermal catalysis, we introduce a highly selective, environmentally friendly, energy-efficient synthetic route for AA, starting from ethane, presenting a promising alternative for AA synthesis. This integration of photocatalysis in low-temperature oxidation demonstrates a new route of selective oxidation of light alkanes. Acetic acid, a key intermediate compound, is synthesized by oxidization of ethane with H2O2 at 0 degrees C at ambient pressure through an integrated thermal catalysis and photocatalysis. The selectivity for producing acetic acid reaches 98.7 %. The positively charged Pd1 atom with an adsorbed OH group is the site for activating the first C-H of C2H6 with an energy barrier of only 0.14 eV. image
Keyword ：
photocatalysis photocatalysis Ethane Ethane in situ/operando studies in situ/operando studies Single-atom catalysis Single-atom catalysis Acetic acid Acetic acid
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| GB/T 7714 | Zong, Xupeng , Chu, Yi-Chun , Tang, Yu et al. Highly Selective Photocatalytic Synthesis of Acetic Acid at 0-25 °C [J]. | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2024 , 63 (42) . |
| MLA | Zong, Xupeng et al. "Highly Selective Photocatalytic Synthesis of Acetic Acid at 0-25 °C" . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION 63 . 42 (2024) . |
| APA | Zong, Xupeng , Chu, Yi-Chun , Tang, Yu , Li, Yuting , Wu, Xin-Ping , Sun, Zaicheng et al. Highly Selective Photocatalytic Synthesis of Acetic Acid at 0-25 °C . | ANGEWANDTE CHEMIE-INTERNATIONAL EDITION , 2024 , 63 (42) . |
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Abstract ：
Understanding the valency and structural variations of metal centers during reactions is important for mechanistic studies of single-atom catalysis, which could be beneficial for optimizing reactions and designing new protocols. Herein, we precisely developed a single-atom Cu(I)-N4 site catalyst via a photoinduced ligand exchange (PILE) strategy. The low-valent and electron-rich copper species could catalyze hydrophosphinylation via a novel single-electron oxidative addition (OA) pathway under light irradiation, which could considerably decrease the energy barrier compared with the well-known hydrogen atom transfer (HAT) and single electron transfer (SET) processes. The Cu(I)-Cu(II)-Cu(I) catalytic cycle, via single-electron oxidative addition and photoreduction, has been proven by multiple in situ or operando techniques. This catalytic system demonstrates high efficiency and requires room temperature conditions and no additives, which improves the turnover frequency (TOF) to 1507 h-1. In particular, this unique mechanism has broken through the substrate limitation and shows a broad scope for different electronic effects of alkenes and alkynes.
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| GB/T 7714 | Wang, Guanglin , Liu, Yichang , Zhang, Xiangyu et al. Mechanistic Investigation into Single-Electron Oxidative Addition of Single-Atom Cu(I)-N4 Site: Revealing the Cu(I)-Cu(II)-Cu(I) Catalytic Cycle in Photochemical Hydrophosphinylation [J]. | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY , 2024 , 146 (12) : 8668-8676 . |
| MLA | Wang, Guanglin et al. "Mechanistic Investigation into Single-Electron Oxidative Addition of Single-Atom Cu(I)-N4 Site: Revealing the Cu(I)-Cu(II)-Cu(I) Catalytic Cycle in Photochemical Hydrophosphinylation" . | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 146 . 12 (2024) : 8668-8676 . |
| APA | Wang, Guanglin , Liu, Yichang , Zhang, Xiangyu , Zong, Xupeng , Zhang, Xu , Zheng, Kun et al. Mechanistic Investigation into Single-Electron Oxidative Addition of Single-Atom Cu(I)-N4 Site: Revealing the Cu(I)-Cu(II)-Cu(I) Catalytic Cycle in Photochemical Hydrophosphinylation . | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY , 2024 , 146 (12) , 8668-8676 . |
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Abstract ：
Carbon dots (CDs) have received considerable attention in many application areas owing to their unique optical properties and potential applications; however, the fluorescent mechanism is an obstacle to their applications. Herein, three-color emissive CDs are prepared from single o-phenylenediamine (oPD) by regulating the ratio of ethanol and dimethylformamide (DMF). Fluorescent mechanism of these CDs is proposed as molecular state fluorescence. Reaction intermediates are identified using liquid chromatrography-mass spectroscopy (LC-MS) and H-1 nuclear magnetic resonance (NMR) spectra. 1H-Benzo[d]imidazole (BI), 2,3-diaminophenazine (DAP), and 5,14-dihydroquinoxalino[2,3-b] phenazine (DHQP) are proposed to be the fluorophores of blue, green, and red emissive CDs by comparing their optical properties. As per the LC-MS and H-1-NMR analysis, DHQP with red emission tends to form from DAP and oPD in pure ethanol. By adding DMF, BI formation is enhanced and DHQP formation is suppressed. The prepared CDs exhibit green emission with DAP. When the DMF amount is >50%, BI formation is considerably promoted, resulting in DAP formation being suppressed. BI with blue emission then turns into the fluorophore of CDs. This result provides us an improved understanding of the fluorescent mechanism of oPD-based CDs, which guides us in designing the structure and optical properties of CDs.
Keyword ：
carbon dots carbon dots fluorophore fluorophore photoluminescence mechanism photoluminescence mechanism molecular state molecular state o-phenylenediamine o-phenylenediamine
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| GB/T 7714 | Li, Pengfei , Xue, Shanshan , Sun, Lu et al. Formation and Fluorescent Mechanism of Multiple Color Emissive Carbon Dots from o-Phenylenediamine [J]. | SMALL , 2024 , 20 (29) . |
| MLA | Li, Pengfei et al. "Formation and Fluorescent Mechanism of Multiple Color Emissive Carbon Dots from o-Phenylenediamine" . | SMALL 20 . 29 (2024) . |
| APA | Li, Pengfei , Xue, Shanshan , Sun, Lu , Ma, Xiaobao , Liu, Wenning , An, Li et al. Formation and Fluorescent Mechanism of Multiple Color Emissive Carbon Dots from o-Phenylenediamine . | SMALL , 2024 , 20 (29) . |
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Abstract ：
The rational design of inexpensive and highly efficient electrocatalysts for ethanol oxidation reaction (EOR) is crucial for direct ethanol fuel cells. In this study, a series of carbon -supported PtCu electrocatalysts with varying Pt/Cu ratios were synthesized using a microfluidic system. This system enabled the separation of heterogeneous nucleation and nanocrystal growth based on segmental thermal induction. Heterogeneous nucleation occurred at the low -temperature zone, which resulted in uniform loading, while the enhancement of solvent reducibility in the high -temperature region enabled the control of the PtCu nanoparticle composition. The synthesized PtCu/C electrocatalyst, with Cu content adjustable from 17% to 38%, exhibited high crystallinity and homogeneous dispersion, with an average particle size of 3.9 nm. These advantageous physical properties endowed the PtCu/C electrocatalysts with significantly enhanced electrocatalytic performance for EOR compared with commercial Pt/ C catalysts. The development of this method presents a novel approach for the controlled preparation of supported catalysts.
Keyword ：
Electrocatalysts Electrocatalysts Alloy Alloy Microfluidic synthesis Microfluidic synthesis Ethanol oxidation reaction Ethanol oxidation reaction
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| GB/T 7714 | Kang, Xueming , Zhang, Dongtang , An, Li et al. Microfluidic-enabled control of ethanol oxidation catalyst synthesis by separating heterogeneous nucleation and growth processes [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 982 . |
| MLA | Kang, Xueming et al. "Microfluidic-enabled control of ethanol oxidation catalyst synthesis by separating heterogeneous nucleation and growth processes" . | JOURNAL OF ALLOYS AND COMPOUNDS 982 (2024) . |
| APA | Kang, Xueming , Zhang, Dongtang , An, Li , Wang, Xiayan , Sun, Zaicheng , Guo, Guangsheng . Microfluidic-enabled control of ethanol oxidation catalyst synthesis by separating heterogeneous nucleation and growth processes . | JOURNAL OF ALLOYS AND COMPOUNDS , 2024 , 982 . |
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Abstract ：
一种镍单原子多相催化剂在芳基卤代物和胺类偶联反应中的应用涉及有机化学合成领域。所述应用中所述镍单原子多相催化剂由载体氮化碳‑碳复合材料以及负载在其上以单原子形式分散的镍组成，负载量为0.02～8wt.％.本发明提供的催化剂在可见光照的条件下高转化率、高选择性地实现芳基卤代物和胺类的偶联反应。使用该催化剂实现C‑N偶联反应时，具有反应条件温和、效率高、选择性好的特点，且具有较高的循环稳定性，可以经过简单的液固分离后回收循环再使用。
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| GB/T 7714 | 孙再成 , 王金明 . 一种镍单原子多相催化剂在芳基卤代物和胺类偶联反应中的应用 : CN202310202015.5[P]. | 2023-03-06 . |
| MLA | 孙再成 et al. "一种镍单原子多相催化剂在芳基卤代物和胺类偶联反应中的应用" : CN202310202015.5. | 2023-03-06 . |
| APA | 孙再成 , 王金明 . 一种镍单原子多相催化剂在芳基卤代物和胺类偶联反应中的应用 : CN202310202015.5. | 2023-03-06 . |
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Abstract ：
Ammonia is an important chemical raw material and non-carbon-based fuel. Photocatalytic ammonia production technology as a mild alternative to the traditional Harbor-Bosch route is carried out at the air, liquid, and solid three-phase interface. Promoting the activation of N-2, depressing hydrogen evolution reaction (HER), and increasing the local N-2 concentration around the catalyst surface are critical factors in achieving high conversion efficiency. In this paper, we proposed that defective TiO2 is surface-modified by alkyl acids with different carbon chain lengths (C-2, C-5, C-8, C-11, and C-14) to tune the catalyst surface properties. The defect sites greatly promote N-2 adsorption and activation. The wettability of the catalyst can be regulated from hydrophilic to hydrophobic by the length of the alkyl chain. The hydrophobic surface enhances the N-2 adsorption and increases the local N-2 concentration due to its aerophile. Meanwhile, it depresses the proton adsorption and HER. Overall, the nitrogen reduction reaction (NRR) is greatly promoted. Among the series of samples, they present a systematic change and have a maximal NRR performance for n-octanoic acid-defective TiO2 (C-8-Vo-TiO2; Vo = oxygen vacancy). The rate of ammonia production can be as high as 392 mu mol center dot g(-1)center dot h(-1). This work provides a new strategy for efficient ammonia synthesis at the three-phase interface using photocatalyst technology.
Keyword ：
alkyl acids alkyl acids aerophilic modification aerophilic modification photocatalytic ammonia synthesis photocatalytic ammonia synthesis defective TiO2 defective TiO2
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| GB/T 7714 | Guan, Renquan , Cheng, Xueying , Chen, Yunning et al. Wettability control of defective TiO2 with alkyl acid for highly efficient photocatalytic ammonia synthesis [J]. | NANO RESEARCH , 2023 , 16 (8) : 10770-10778 . |
| MLA | Guan, Renquan et al. "Wettability control of defective TiO2 with alkyl acid for highly efficient photocatalytic ammonia synthesis" . | NANO RESEARCH 16 . 8 (2023) : 10770-10778 . |
| APA | Guan, Renquan , Cheng, Xueying , Chen, Yunning , Wu, Zhengkai , Zhao, Zhao , Shang, Qingkun et al. Wettability control of defective TiO2 with alkyl acid for highly efficient photocatalytic ammonia synthesis . | NANO RESEARCH , 2023 , 16 (8) , 10770-10778 . |
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