SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2018
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IF 5.018
Zijie Xu,Teng Li,Qian Liu,Fayin Zhang,Xiaodan Hong,Shuyao Xie,Changxu Lin,Xiangyang Liu,Wenxi Guo
Here we present a highly flexible and large-area CuS transparent conductive film (TCF) fabricated by colloidal crackle pattern as a counter electrode (CE) for flexible dye sensitized solar cell (DSSC). This rectangular CuS TCF can be fabricated on arbitrary flexible substrates at low temperature and exhibits superior mechanical robustness in bending cycling measurement. The transmittance and conductivity can be accurately controlled by controlling the sizes and shapes of the crackle patterns, ~ 90% transmittance can be achieved when the sheet resistances (R s ) are ~ 60 Ω sq −1 . Moreover, such CuS TCF has strong receivable ability of pH (1−13) and temperature changes (0–100 °C). In the application of DSSC as CE, the cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) analyses of the CuS networks exhibit a comparable electrocatalytic behavior with the platinum (Pt) networks on polyethylene terephthalate (PET), yielding a power conversion efficiency (PCE) of 4.54% for DSSC based on CuS networks as CE and retaining > 90% PCE after 500 bending cycles. Such CuS TCF with high transparency, flexibility, conductivity and electrochemical catalytic ability shows great potentials in other wearable, light-weight electrochemical cells .
研究领域:
材料科学
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光伏技术
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纳米技术
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柔性电子学
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电化学
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DOI
高影响因子
ACS Catalysis
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2026
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IF 13.6
Jiankang Zhang,Yongsheng Wei,Hongxia Zhang,Zhiwei Zhu,Jinghui Yang,Liancheng Bing,Changqing Chu,Xiaofeng Gao,Dan Feng,Qiming Sun,Yong Qin
Bimetal cluster catalysts present boosted catalytic performance in numerous reactions due to their coordinatively unsaturated metal sites and synergy. Nevertheless, constructing ultrafine and stable bimetal cluster catalysts that can be well applied under harsh high-temperature reaction conditions is still a tough challenge. Herein, we propose a spatial and chemical dual-confinement strategy to design hierarchical ZSM-5 zeolite-confined PtZn bimetal catalysts with ultrafine clusters (ca. 1.2 nm) and high stability against sintering, which can be controllably synthesized via a microwave-assisted one-pot hydrothermal approach. The optimized PtZn@ZSM-5 cluster catalyst exhibits remarkably boosted propane dehydrogenation (PDH) performance, with a propane conversion of ca. 60% and a propylene selectivity of >96% (WHSV = 3 h–1, 600 °C). Both experimental and theoretical studies demonstrate that Pt species are well anchored by the hierarchical pores and framework zinc, constructing highly dispersed active Pt–(O–Zn)x species responsible for the boosted catalytic performance. This work affords a facile and general dual-confinement strategy to synthesize ultrafine bimetal cluster catalysts for PDH, which can be well extended to other catalyst systems, such as RhZn@ZSM-5 and IrZn@ZSM-5.
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高影响因子
DALTON TRANSACTIONS
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2026
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IF 3.3
Yuke Han,Haoyu Sun,Yongzheng Zhang,Yanyun Ma,Liaokuo Gong,Yiqun Zheng
Developing efficient and CO-tolerant electrocatalysts for formic acid oxidation remains a critical challenge due to the sluggish kinetics and severe CO poisoning of Pt-based catalysts. Herein, we report a facile synthesis of urchin-like PtAg nanocrystals (PtAg NUs) with a densely branched architecture, which synergizes Ag alloying and unique morphological features to steer the reaction toward the direct pathway. When assessed for formic acid oxidation in acidic medium, PtAg NUs exhibit significantly enhanced performance compared to commercial Pt/C. Specifically, PtAg NUs show a lower onset potential (320 vs. 430 mV), a 17.6-fold higher direct pathway specific activity (0.88 vs. 0.05 mA cm−2), and a 3.9-fold higher indirect pathway specific activity (0.66 vs. 0.17 mA cm−2). Most notably, PtAg NUs demonstrate enhanced long-term stability, retaining nearly six times higher current after 3600 s (0.035 vs. 0.006 mA cm−2). In situ Raman spectroscopy confirms that both direct and indirect pathways coexist, with Ag alloying steering the reaction toward a more direct pathway-dominant process. Density functional theory reveals that Ag alloying downshifts the d-band center, weakening CO adsorption and facilitating the COOH*-mediated pathway. The enhanced performance is attributed to the synergistic interplay of Ag electronic modification and the urchin-like geometric effects. This work highlights how synergizing Ag alloying and morphological engineering can steer formic acid oxidation toward the direct pathway, offering a rational design strategy for advanced Pt-based electrocatalysts.
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DOI
PubMed
高影响因子
Journal of Energy Chemistry
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2026
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IF 15.6
Hui Song,Jinshu Wang,Xinxin Wang,Guangshun Ran,Chunxia Lin,Tianjiao Lou,Jinxu Song,Xing Cheng,Wenyuan Zhou,Hongyi Li
Efficient hydrogen evolution at high current densities requires simultaneous optimization of intrinsic reaction kinetics, multiphase mass transport, and electrode durability. Here, we constructed a binder-free Pt/TiN NTs@3D-TC4 electrode by integrating Pt nanoparticles and in situ-grown TiN nanotube arrays on a three-dimensional printed porous titanium-alloy scaffold. Its high performance arises from three mutually reinforcing effects. First, the work function mismatch between Pt and TiN drives electron transfer from TiN to Pt, producing electron-rich Pt sites and an interfacial built-in electric field. Combined with Pt–N coordination and d - p orbital hybridization, this electronic metal-support interaction optimizes hydrogen adsorption and desorption energetics, thereby enhancing intrinsic hydrogen evolution reaction activity. Second, the periodic macroporous scaffold and nanoparticle-assembled TiN nanotubes create a superhydrophilic and aerophobic multiscale transport network. This network promotes electrolyte infiltration, proton delivery, and rapid bubble detachment while mitigating gas shielding at high current densities. Third, robust Pt–N anchoring and binder-free integration of the catalytic layer with the conductive framework suppress Pt migration, aggregation, and detachment. Consequently, Pt/TiN NTs@3D-TC4 requires overpotentials of only 30.8 and 207 mV to deliver 10 and 1000 mA cm −2 , respectively. It also achieves a Pt mass activity of 20.81 A mg Pt −1 at 200 mV and operates stably for over 200 h at 1 A cm −2 . These results establish a practical electrode design that combines hierarchical transport regulation with interfacial electronic modulation for scalable hydrogen production at high current densities. Interfacial electron transfer optimizes H* adsorption/desorption; multiscale hydrophilic architecture accelerates bubble release and mass transport; Pt–TiN interaction ensures structural stability. The triple enhancement enables scalable, high-current-density water electrolysis. Download: Download high-res image (145KB) Download: Download full-size image
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高影响因子
JOURNAL OF CATALYSIS
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2025
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IF 6.5
Yanfei Liu,Yanbo Pu,Chun Du,Jie Xu,Yaohui Dun,Chengxiong Wang,Yunkun Zhao,Jun Huang,Bin Shan,Rong Chen
Selective catalytic oxidation of ammonia (NH 3 -SCO) to N 2 is crucial for abating residual NH 3 emissions, but existing catalysts struggle to combine low-temperature activity with high N 2 selectivity due to competitive Pt-NO interactions. Here we design a tandem confinement catalyst by depositing sub-nanometer Pt clusters (∼0.72 nm) inside the supercages of a Cu-exchanged USY zeolite via atomic layer deposition (ALD), creating intimately paired Pt–Cu active sites. This confined Pt/Cu-USY ALD catalyst achieves >90 % NH 3 conversion and >90 % N 2 selectivity across an exceptionally broad 170-300°C window under simulated exhaust conditions, surpassing all previously reported Pt-based NH 3 -SCO catalysts. The simultaneously enhanced low-temperature activity and high-temperature N 2 selectivity of the Pt/Cu-USY ALD catalyst can be attributed to the spatial confinement of Pt clusters within the Cu-USY framework, which leads to an expanded NO desorption window (150–350 °C). Detailed in situ studies further reveal that N 2 O 4 species preferentially serve as NO storage intermediates on the Pt/Cu-USY ALD catalyst surface at low temperatures, exhibiting significantly lower formation barriers compared to free nitrates, which dominate as intermediates in conventional Pt–Cu systems. This effectively mitigates free nitrate–induced site poisoning and overcomes the typical activity–selectivity trade-offs observed in conventional Pt–Cu dual-site catalysts.
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高影响因子
CHINESE JOURNAL OF CATALYSIS
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2023
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IF 16.5
Zexing Wu,Yuxiao Gao,Zixuan Wang,Weiping Xiao,Xinping Wang,Bin Li,Zhenjiang Li,Xiaobin Liu,Tianyi Ma,Lei Wang
Developing multifunctional electrocatalysts toward energy-related reactions could reduce the cost and improve the utilization efficiency of raw materials. Herein, defective CoP decorated with ultrafine Pt nanoparticles (Pt/d-CoP/NPC) with multifunctional electrocatalytic performances is prepared via facile pyrolysis and following chemical reduction process. The as-synthesized Pt/d-CoP/NPC owns high half-wave potential of 0.82 V for oxygen reduction reaction with excellent stability in 0.1 mol/L KOH. Density functional theory calculations demonstrate that the adsorption energy of *OO at Pt/d-CoP/NPC is stronger compared to Pt, yielding higher catalytic activity for ORR. Moreover, the resultant electrocatalyst possesses excellent catalytic activities with low overpotentials toward hydrogen evolution reaction (33 mV in 1 mol/L KOH, 6 mV in 0.5 mol/L H 2 SO 4 and 70 mV in 1 mol/L PBS) and oxygen evolution reaction (320 mV) at 10 mA/cm 2 . Water-splitting and rechargeable Zn-air batteries assembled with the as-synthesized Pt/d-CoP/NPC as electrodes exhibit outstanding activity and long-range stability. Remarkably, sustainable energies and homemade Zn-air battery can efficiently drive the Pt/d-CoP/NPC electrolyzer with sumless hydrogen bubbles generated, verifying the potential applications for renewable energy storage.
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高影响因子
Journal of Environmental Chemical Engineering
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2023
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IF 7.7
Mehdihasan I. Shekh,Tao Lu,Amit Kumar,Gaurav Sharma,Guangming Zhu,Florian J. Stadler,Bing Du
Theoretically, Single atoms are providing the maximum atomic efficiency and are very promising to improve the performance of the noble metal catalysts for high-active electrochemical sensors. In this work, Pt single atom anchored on surficial modified, reduced graphene oxides with poly(ionic liquids) (Pt 1 _rGO@PILs) for detecting hydrogen peroxide (H 2 O 2 ) was synthesized via a facile microwave-assisted method. Due to the high active sites from PILs, 1.2 wt% isolated Pt atoms were steadily loaded on the surface of rGO@PILs and formed Pt-S 4 coordination with the modified PILs layer. Such atomical dispersion of Pt atoms and their unique coordination environment promoted electronic transfer during the electrochemical reaction. The Pt 1 _rGO@PILs composite presented a detection limitation of 1.5 µM in a liner range from 2.3 to 250 µM with high sensitivity up to 725.95 µA/µM. The catalysts also showed good stability for 30 days while active and the lowest detected concentration of approximately 15 μM for H 2 O 2 in the real commercial samples.
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高影响因子
Food Bioscience
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2023
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IF 5.2
Xiao-Jian Zhang,Bao-Juan Dou,Yu-Qi Wang,Fei Yang,Xue Cai,Mian Li,Zhi-Qiang Liu,Yu-Guo Zheng
Functional sugar alcohols are a kind of burgeoning food additives to substitute saccharose due to the prominent biofunctions including moderate sweetness, low calorific values and no influence on blood sugar fluctuation, thus applied widely in food, medical, health protection as well as chemical production. Traditional synthesis of functional sugar alcohols required high temperature and H 2 pressure, as well as leading to low reaction efficiency, side reactions and leaching of toxic metal ions. In the present work, Pt–Ni–Sn/MWCNTs catalyst was obtained using a liquid phase reduction method with the transition metals loading of Pt 3.4%, Ni 0.7%, Sn 0.4%, respectively. The catalyst catalyzed the preparation of xylitol , sorbitol , mannitol and galactitol with the high monosaccharide conversion (>99.5%) and yield (>99.1%) under relatively mild conditions (100 °C, 3.0 MPa H 2 ), which were lower than ever reported. For the 13-batch reuse of Pt–Ni–Sn/MWCNTs, the total conversion of xylose was 99.4% and the total yield of xylitol was 99.2%, the productivity of 103.2 g xylitol per gram of catalyst was also obtained. Besides, no side reactions, no metal ions as well as no changes of pH were observed in the reaction process. Our trimetallic catalyst exhibited valuable potential in functional sugar alcohols production.
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高影响因子
International Journal of Environmental Research and Public Health
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2022
·Vol. 19
·期 23
·15688
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IF 4.614
Yifan Yao,Kai Zhu,Yucan Liu,Qianjin Liu,Lihua Huang
In this study, tartrazine solutions were oxidized using innovative electrochemical advanced oxidation processes (EAOPs) that combined persulfate (PS) activation with electrogenerated H2O2, cathodic reduction and anodic oxidation at Pt and BDD anodes, and graphite cathode in an undivided stirred reactor. For the Pt anode, SO4·−was generated from a reduction reaction at the cathode and a reaction between the PS and electrogenerated H2O2. For the BDD anode, SO4·−was generated from a reduction reaction at the cathode, an oxidation reaction at the anode, and a reaction between PS and electrogenerated H2O2. Among these activation methods, the activation efficiency of PS by electrogenerated H2O2is much better than other methods. The effects of PS concentration up to 36 mM, applied current density between 6 to 15 mA cm−2,and temperatures between 25 to 45 °C were investigated. For the electro-Fenton process with Pt anode (Pt-H2O2/PS process), the best result for oxidizing 250 mg L−1tartrazine solution was obtained with 37.5 mM Na2SO4+ 9.0 mM Na2S2O8, applied current density at 12 mA cm−2and 45 °C, acquiring total color removal after 30 min reaction. For the electro-Fenton process with BDD anode (BDD-H2O2/PS process), the best result for oxidizing 250 mg L−1tartrazine solution was obtained with 25 mM Na2SO4+ 18 mM Na2S2O8, applied current density at 12 mA cm−2and 45 °C, yielding 100% color removal after 30 min reaction. The main oxidizing agents are SO4·−and OH·in the anodic oxidation process with PS and the electro-Fenton process with PS. It is concluded that the additions of PS tremendously improve the oxidation power of electro-Fenton processes with PS, especially the Pt-H2O2/PS process.Keywords:anodic oxidation;electrogenerated H2O2;persulfate;hydroxyl radical;sulfate radical
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Yang Chen,Tianyi Ma,Ruiqing Ke,Mengyu Lu,Jiaxing An,Yijia Wang,Kunlun Huang,Yunbo Luo,Jin-Cheng Li,Nan Cheng
The consumption of Se-rich foods is a highly effective means of augmenting a person’s intake of Se, which plays a critical role in human health; however, excessive Se consumption can be toxic. The determination of Se levels is therefore of paramount importance to ensure the safety of both the production and consumption of selenium-rich foods. In this study, a rapid and user-friendly method is developed for the analysis of selenium-rich foods wherein the detection process is similar to watching three-dimensional movies in a theater. A portable 3D-printed colorimetric device called the Detection THEATER ( T ime-saving, H igh-sensitive, E asy, A ccurate, T elling, E conomical, and R apid) is first constructed for the rapid and visually accessible colorimetric analysis of samples in nonlaboratory settings. Subsequently, the Co-N-C nanozyme is doped with Pt to produce a Pt-Co-N-C nanozyme with superior peroxidase-like activity, which serves as the viewing glasses for signal amplification in the Detection THEATER. The Detection THEATER exhibits excellent sensitivity and accuracy, including a linear range of 0.5–1.2 μg/mL and a low detection limit of 0.026 μg/mL. The pretreatment of food samples is also optimized and simplified, thereby reducing processing times three-fold and enhancing accessibility and usability. The Pt-Co-N-C nanozyme-based Detection THEATER, demonstrated outstanding specificity and practicality, opening up a new avenue for the analysis of selenium-rich foods.
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高影响因子
Materials Today Physics
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2023
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IF 11.5
Zhenfei Yang,Xinnian Xia,Ming Fang,Longlu wang,Shuaijun Pan,Yang guo
Efficient spatial separation of photogenerated carriers is the key to achieving photocatalytic oxidation reduction synergistic reactions, and the built-in electric field generated by piezoelectric effects can provide a strong driving force for charge separation. A novel Pt/ZnIn 2 S 4 /BaTiO 3 (PBZIS) piezo-photocatalyst with spatial charge separation was successfully constructed through two-step hydrothermal and photodeposition methods. Due to the special 1D/2D core/shell structure, the inner BaTiO 3 can served as hole-storage layer, while the outer Pt nanoparticles can acted as electron capture center, thus greatly improving the separation of photo generated charge carriers and achieving spatial separation of redox sites. Under the ultrasound, the polarized electric field induced by the piezoelectric effect can further improve the extraction rate of photo generated holes by BaTiO 3 and accelerate surface catalytic reactions . Therefore, the synergism of electron/hole co-extraction and piezoelectric effect construct a directional transmission channel and target active sites for photogenerated electron-holes over PBZIS heterojunctions , reuslting in the highest performance for photocatalytic cooperative H 2 evolution (1335.3 μmol g −1 h −1 ) and HMF oxidation (1070.8 μmol g −1 h −1 ). This work would inspire the development of high-performance piezo-photocatalysts for the cooperative biomass oxidation coupling with high efficient hydrogen evolution .
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Su Yan,Xia Yang,Mengxiao Zhong,Weimo Li,Xiaojie Chen,Jiaqi Xu,Wei Chen,GuangTao Yu,Ce Wang,Xiaofeng Lu
In this study, a series of X-Rh (X = Fe, Co, Ni) alloy aerogels (AGs) are constructed via a galvanic replacement strategy. Due to the optimized electronic structure and the unique features of metal aerogel, the resultant Co AG-Rh500 electrocatalyst exhibits much better HER activity and robust stability than the benchmark commercial Pt/C catalyst in all-pH media. Theoretical result further reveals that the top sites of Co and Rh atoms in the (0 0 1) and (1 0 0) surfaces of the hybrid CoRh alloy systems can act as the active sites especially in an acidic condition, while the bridge and hollow sites on the (0 0 1) and (1 0 0) surfaces of CoRh alloy contribute a lot to the superior HER kinetics in alkaline and neutral electrolytes. Furthermore, the apparent electron transfer between Co and Rh atoms modulates the adsorption state of H*, thereby promoting the HER performance.
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危险品化学品经营许可证（带存储）