Journal of Physical Chemistry C
·
2017
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IF 4.536
Qiang Wu,Haifeng Zhao,Fei Huang,Juan Hou,Haibin Cao,Zhiyong Liu,Shanglong Peng,Guozhong Cao
The introduction of various amounts of reduced graphene oxide (RGO) to CdS/CdSe quantum dots co-sensitized solar cells was investigated to enhance the light absorption and to promote the electron transfer. The characterization and comparison of optical and electrochemical properties as well as the performance of the resultant quantum dot-sensitized solar cells (QDSCs) with different amounts of RGO have been investigated systematically. The introduction of RGO demonstrated to enhance the light harvesting and consequently increase the short-circuit current density (Jsc). ZnS inserting between QDs and RGO can effectively block the charge recombination at the interface; however, the defects of RGO in the TiO2/QDs/ZnS/RGO photoanode still may accelerate the interface charge recombination in QDSCs and lead to a slight decrease of the open-circuit voltage (Voc). The balance between the light harvesting and charge recombination in RGO modified QDSCs is a key for achieving high power conversion efficiency (PCE). Finally, the CdS/CdSe/ZnS co-sensitized cell with modification RGO (3 min) achieved a high PCE of 5.28% (Jsc = 15.8 mA/cm2, Voc = 572 mV), more than 13% higher than that of 4.69% (Jsc = 13.7 mA/cm2, Voc = 602 mV) obtained for the cell without RGO.
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Colloid and Interface Science Communications
·
2025
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IF 4.7
Zhanglong Huang,Shiwei Ding,Lili Zhong,Chenxi Liu,Xiaofei Li,Dan He
Combination therapy holds great promise for enhancing antitumor efficacy by achieving tumor-targeted and sequentially synergistic cytotoxicity. We developed a tumor-targeted hybrid micellar nanoplatform that co-delivers the chemotherapeutic agent pemetrexed (PEM) and carbon monoxide (CO) for synergistic chemo-gas therapy. PEM and Fe₃(CO)₁₂ were covalently conjugated to D-α-tocopheryl polyethylene glycol succinate (TPGS), yielding two amphiphilic prodrugs—TPGS-PEM and TPGS-CO—which were co-assembled into hybrid micelles. The presence of PEM enabled folate receptor-mediated active targeting, resulting in efficient uptake by 4T1 breast cancer cells. Intracellular esterase-catalyzed cleavage of the ester bond released PEM, which elevated reactive oxygen species (ROS) levels. The increase in ROS triggered site-specific CO release from the Fe–CO complex. This sequential mechanism enabled a cascade of tumor-selective chemotherapy and gas therapy, leading to enhanced apoptosis and reduced tumor proliferation. The hybrid micelles exhibited superior tumor suppression, reduced systemic toxicity, and prolonged survival in tumor-bearing mice.
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POLYHEDRON
·
2025
·
IF 2.6
Xingru Liu,Huizhong Wu,Yingdi Zhang,Xicheng Deng,Haoyue Xu,WangYe,Yingxi Wang,Ling Li
A series of bimetallic Co/Ce-MOFs materials (Co/Ce-MOFs-NH 2 ) were synthesized via a solvothermal method, and their catalytic performance in peroxymonosulfate (PMS) activation for the degradation of Rhodamine B (RhB) was systematically investigated. The results demonstrate that the 3:1 Co/Ce-MOFs-NH 2 not only retains high catalytic activity but also exhibits significantly enhanced structural stability due to the introduction of Ce 3+ . Over 99 % of RhB was degraded within 3 min, and the material maintained 92.3 % of its initial activity after five consecutive cycles. Mechanistic studies revealed that · OH and singlet oxygen ( 1 O 2 ) serves as the dominant reactive oxygen species, while the synergistic redox cycles of Co 2+ /Co 3+ and Ce 3+ /Ce 4+ effectively promote the continuous activation of PMS. This study provides a novel strategy for designing highly efficient and stable bimetallic Metal-Organic Frameworks(MOFs) catalysts.
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Small
·
2025
·
IF 12.1
Lujia Chai,Zhaoen Liu,Yiwen Hu,Yiming Zheng,Yujuan Chen,Liang Zhang,Zihua Yang,Qingpeng Wang,Dong Sun,Kelei Zhuo
The inherent limitations of zinc anodes constrain the performance of zinc-ion batteries (ZIBs). Viable electrolyte additives offer a practical approach for stabilizing the zinc anode interfaces. This work systematically investigates the role of nitrogen/fluorine co-doped carbon dots (NF-CDs) as an electrolyte additive. Theoretical investigations indicate that the nitrogen and fluorine atoms on NF-CDs have stronger binding energies with Zn 2+ than water molecules and Zn 2+ , enabling NF-CDs to partially replace coordinated water within the Zn 2+ solvation sheath and reconstruct the Zn 2+ solvation structure. This mechanism is corroborated by nuclear magnetic resonance and Fourier transform infrared spectroscopy. The reconfigured solvation structure weakens the coordination between the bound water and Zn 2+ , inhibiting water-induced side reactions and enhancing the electrode's electrochemical stability. Concurrently, NF-CDs’ steric hindrance contributes to interfacial stabilization, facilitates the diffusion of solvated Zn 2+ , and mitigates zinc aggregation. Consequently, the zinc-symmetric cells incorporating NF-CDs achieve stable cycling for 1600 h at 1 mA cm −2 , while the zinc-copper cells maintain a 99.67% average coulombic efficiency over 900 cycles. The Zn||NVO (NaV 3 O 8 ·1.5H 2 O) full cell retains a specific capacity of 140 mAh g −1 after 1000 cycles at 5 A g −1 . The results demonstrate the NF-CDs’ potential as additives for enhancing the stability of ZIBs.
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Journal of Materials Chemistry A
·
2016
·Vol. 5
·期 3
·952-957
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IF 8.262
Kui Zhou,Bibimaryam Mousavi,Zhixiong Luo,Shophot Phatanasri,Somboon Chaemchuen,Francis Verpoort
A novel Zn/Co zeolitic imidazolate framework (ZIF) has been constructed by an easy and straightforward room temperature technique. Several characterization techniques such as SEM, TEM-EDX, single-crystal XRD and ICP have been applied to confirm that the structure formed is a sodalite (SOD) cage type structure. The Zn/Co-ZIF possesses a high nano-crystallinity and porosity with a large surface area. By tuning the amount of Co and Zn in the Zn/Co zeolitic imidazolate framework, the physical and chemical properties have been improved compared with those of the single metal frameworks (ZIF-8 and ZIF-67). Consequently, the Zn/Co-ZIF was investigated for two different applications; gas adsorption (CO2, CH4 and N2) and catalysis (CO2 conversion to cyclic carbonates) and the obtained results were compared with the performance of previously reported single metal frameworks (ZIF-8 and ZIF-67). Additionally, hydrolytic stability tests under ambient conditions and immersed in water at 75 °C were performed and pointed out that Zn/Co-ZIF exhibits a higher stability. Moreover, based on these results, the Zn/Co-ZIF demonstrates better properties compared with ZIF-8 and ZIF-67.
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JOURNAL OF CATALYSIS
·
2018
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IF 6.759
Somboon Chaemchuen,Xuan Xiao,Marzieh Ghadamyari,Bibimaryam Mousavi,Nikom Klomkliang,Ye Yuan,Francis Verpoort
A robust catalyst generated from the pyrolysis of bimetallic Zn/Co-ZIF comprising magnetic properties demonstrated to be an effective heterogeneous catalyst system for CO 2 conversion reaction without the need of co-catalyst and solvent. Controllable pyrolysis under various conditions resulted in a unique active structure composed of metallic particles stabilized in a nitrogen-doped carbon matrix. The metallic particles acting as acid sites are dispersed in a nitrogen-doped porous carbon-wall which provides the basic sites. These sites are created during the pyrolysis process of Zn/Co-ZIF used as a special template under a controlled atmosphere. The resulting material possessing both, acid and basic sites, showed an excellent catalytic performance for the cycloaddition of CO 2 into epoxides as these sites correspond to the active sites in the catalytic cycle. Additional, the pyrolysis conditions indicated to play an important role in the properties of the resulting materials and in parallel with the catalytic performance. The catalytic material proved to be very robust and maintained high activities for at least eleven cycles using the optimized reaction condition. Moreover, the magnetic property of the resulting catalyst is advantageous especially for the separation from the reaction mixture.
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Journal of CO2 Utilization
·
2026
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IF 8.6
Ruifeng Zhou,Muhammad Shuaib Khan,Xianwei Fu,Qiuye Li
The extensive utilization of fossil fuels has accelerated greenhouse gas emissions, triggering climate issues that have become a global concern. The integration of waste valorization with CO 2 capture agent development is recognized as a green, cost-effective, and efficient approach to achieving carbon neutrality and environmental protection. In this study, porous SiO 2 supports (specific surface area 809.35 m 2 /g) are fabricated from coal-fired power plant waste (fly ash) to synthesize a series of co-modified amine-functionalized adsorbents for CO 2 capture. Through a strategic combination of KH550 (Aminopropyltriethoxysilane) hydrolytic grafting and PEHA (Pentaethylenehexaamine) wet impregnation, a polyamine network is constructed, endowing the co-modified adsorbent CS-4K 50PEHA with superior CO 2 uptake (4.933 mmol/g, 70℃) and exceptional thermal stability. Thermogravimetric-infrared analysis and DFT calculations confirmed the chemical bonding of KH550 to the support, with the co-modified adsorbent exhibiting enhanced thermal stability (thermal decomposition temperature 320℃) compared to singly-modified counterparts. Furthermore, the structure-activity relationship between silane coupling agents and the support during hydrolysis is systematically investigated. The synergistic effect of polyamine active sites on the CO 2 adsorption mechanism is elucidated through in situ DRIFTS and DFT simulations. This work provides molecular-level insights into different amine modification strategies for solid waste-based supports, highlighting the significance of cooperative adsorption mechanisms at the intersection of waste valorization and carbon capture technologies.
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ADVANCED FUNCTIONAL MATERIALS
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2026
·
IF 19.9
Ou Wang,Leiyu Diao,Ping Li,Youyou Feng,Dong Cheng,Yaqiong Su,Jing Wei
Pd-based nanoparticles have been widely employed to enhance H 2 sensing performance due to their strong capability for H 2 adsorption and dissociation. However, strong Pd–H* interactions hinder the hydrogen spillover process, while pronounced CO adsorption results in poor selectivity. Herein, we propose a Pt–Pd single-atom alloy (SAA) sensitization strategy that creates electron-deficient Pd δ+ sites to modulate the interaction between Pd and gas molecules. As a proof of concept, Pt 1 Pd SAA is deposited on commercial SnO 2 to fabricate H 2 sensors. The resulting device achieves an ultra-low detection limit (21 ppb), short response and recovery time (0.8 s and 5.9 s), excellent selectivity and enhanced CO resistance, outperforming traditional Pd nanoparticles, PtPd alloy sensitizers modified SnO 2 gas sensors, and commercial H 2 sensors. Mechanistic studies establish that atomic Pt induces electron-deficient Pd δ+ sites, achieving atomic-scale decoupling of hydrogen activation from CO adsorption, which enables barrierless hydrogen spillover and inherently CO-resistance H 2 sensing, with CO back-donation suppressed by nearly 50%. This study presents a robust SAA sensitization strategy that leverages atomic-level modification-induced electronic structure modulation to overcome the sensitivity-selectivity trade-off, demonstrating its promise for next-generation H 2 sensors.
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Small Methods
·
2026
·
IF 8.7
Xiaochen Feng,Zihao Huang,Mingwei Fang,Meiling Wang,Jinyue Ma,Zewen Wang,Ying Zhu,Lei Jiang
Electrochemical CO 2 reduction (CO 2 RR) to ethanol offers a sustainable route for carbon utilization and energy storage, yet achieving high ethanol selectivity under limited CO 2 availability remains a significant challenge. The central issue is the lack of quantitative understanding of how the interfacial * CO and * H intermediates jointly govern product selectivity. Here, we establish an interfacial coverage regulation strategy by embedding Cu nanoparticles into an imine-functionalized covalent organic framework (Cu/Im-COF). The imine-rich interface enriches CO 2 adsorption while modulating proton transfer, enabling a balanced surface coverage of * CO and * H, identified as the key selectivity descriptor ( θ *CO/*H ) for ethanol formation. Operando Raman spectroscopy, density functional theory calculations, confirms that an optimized θ *CO/*H stabilizes the * HCCHOH intermediate and lowers its formation barrier. Quantitative integration of Raman features allows direct determination of θ *CO/*H , revealing a volcano-type dependence of ethanol selectivity on this descriptor. A maximum ethanol Faradaic efficiency of 56% is achieved at log( θ *CO/*H ) ≈ 3.0, a current density of 700 mA cm − 2 , and a 15% CO 2 feed. This work establishes θ *CO/*H as a quantitative bridge between intermediate coverage and reaction kinetics, providing a mechanistic framework for rational design of CO 2 RR catalysts with high ethanol selectivity under CO 2 -constrained conditions.
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LANGMUIR
·
2026
·
IF 4.4
Wenhao Li,Yujing Chang,Jiajie Tian,Jie Min,Fengmei Ding
A high-methyl-density siloxane-co-acrylate copolymer was successfully synthesized via aqueous emulsion polymerization as a durable, fluorine-free antisoiling finishing agent. By employing a molecular design strategy that utilizes vinyltrisiloxane (VTS) and 3-(methacryloxy)propyltrimethoxysilane (M3T) to create a methyl-rich surface, along with hydroxyethyl methacrylate (HEMA) as a cross-linker, the resulting emulsion imparted exceptional superhydrophobicity to the polyester fabric, achieving a water contact angle (WCA) of 159.7° and a sliding angle (SA) of 5.9°. The finished fabric exhibited remarkable durability, maintaining WCAs of 151.6° (SA of 11.4°) after 25 washing cycles and 127.7° (SA of 19.3°) after 100 abrasion tests, alongside excellent self-cleaning properties and resistance to both aqueous and oily stains. The finishing agent also demonstrated uniform particle size, high stability under acidic/alkaline conditions, and thermal tolerance up to 180 °C. This work, based on a simple and eco-friendly process, presents a highly promising and sustainable alternative to fluorinated coatings for industrial textile applications.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Yanrong Zhu,Hanlin Hu,Haizhe Zhong,Yumeng Shi
Conventional white light-emitting diodes often suffer from low color rendering index and high correlated color temperature due to the lack of red emission. Here, we report novel rare-earth-free Cs 2 CdCl 4 : Sb 3+ , Mn 2+ phosphors synthesized via a cost-effective co-precipitation route. The dual-emission behavior arises from Sb 3+ -related self-trapped excitons (green) and the characteristic 4 T 1 (G)→ 6 A 1 (S) transition of Mn 2+ (orange). Spectroscopic and time-resolved studies reveal an efficient Sb 3+ →Mn 2+ energy transfer process, governed by a dipole-quadrupole interaction. By adjusting Mn 2+ concentration, tunable emission spanning green to orange is achieved, enabling single-component white light generation. In addition, the strong concentration and excitation-dependent emission characteristics suggest potential applications in areas such as multidimensional information encryption and optical anti-counterfeiting. This work provides a low-cost, rare-earth-free strategy for designing multifunctional phosphors for high-quality lighting and security technologies.
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AICHE JOURNAL
·
2026
·
IF 4
Shihao Li,Jiafu Shi,Yu Chen,Hong Wu,Zhongyi Jiang
In photocatalytic hydrogenation, non-directional transfer of electrons and indiscriminate oxidation of products by holes often result in severe electron–hole recombination and unintended product degradation, limiting overall efficiency. Herein, we engineer both the substrate reduction and product oxidation pathways through an interface–pore co-confinement strategy, exemplified by a rationally designed covalent organic framework (COF)-bridged core–shell photocatalyst (U@TpBpy-Rh) and photocatalytic NADH synthesis. The resultant U@TpBpy-Rh functions through dual mechanisms: (1) the confined S-scheme heterojunction interface facilitates directional electron transfer from MOF core to Rh sites in COF, significantly enhancing the photocatalytic NADH synthesis with productivity of 2.82 mmol g −1 h −1 ; (2) the confined pores of the COF shell restrict NADH diffusion toward highly oxidative MOF regions, reducing its oxidation degradation by 63% compared to U@TpBpy. This work demonstrates simultaneous spatiotemporal management of competitive photocatalytic reduction and oxidation pathways and will offer a general strategy for optimizing other redox-coupled reactions.
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