JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Shanqi Liang,Binyu Guo,Lei Zhang,Quanyuan Chen,Lei Li,Pin Gao,Juan Zhou
The growing complexity of water contaminants necessitates a deeper understanding of the interplay between multiple pollutants and catalytic sites. Herein, we explore the simultaneous removal of sulfamethoxazole (SMX) and monoiodoacetic acid (MIAA) via liquid-phase catalytic hydrogenation over Pd nanoparticles supported on diverse carriers (CNT, C₃N₄, Al₂O₃, and SBA-15). Although all catalysts performed well in single-component tests, only Pd/CNT exhibited robust dual-removal capability in mixed systems, achieving complete deiodination of MIAA and 92.4% reduction of SMX within 60 min. Intriguingly, a mutual interference phenomenon was unveiled: MIAA suppressed SMX reduction, while SMX (and other aromatics) unexpectedly accelerated MIAA deiodination. Mechanistic studies identified the pivotal role of hydrogen spillover on Pd/CNT, which possessed a superior H₂ uptake capacity. This facilitated the generation of surface-mobile active H that migrate to the support, enabling a binary active site mechanism. We propose a sequential pathway comprising H₂ dissociative activation, spillover, direct Pd-catalyzed deiodination of MIAA, and CNT-mediated hydrogenation of SMX via spilled-over H species. These findings highlight the exceptional promise of Pd/CNT for the remediation of complex organic contaminants and provide fundamental guidance for designing bifunctional hydrogenation catalysts.
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PubMed
高影响因子
MICROCHEMICAL JOURNAL
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2026
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IF 5.1
Qian Chen,Yutang Wang,Yuzhen Cui,Liran Lou,Zihan Yan,Haohua He,Xiangrong Zeng,Yangping Wen,Guixia Tan,Mingfang Li
Ustilaginoidea oryzae, the ascomycete fungus responsible for Rice False Smut (RFS), devastates global rice yields via rice panicles infection, threatening food security. To address the critical need for early pathogen detection, we developed an ultrasensitive electrochemical genosensor utilizing a gold‑palladium bimetallic nanoparticle (Au-PdNPs) decorated violet phosphorene/boron nitride (VP/BN) nanohybrid. The VP/BN support, synthesized via sonication-assisted liquid-phase exfoliation, enabled the uniform anchoring of Au-PdNPs through chemical reduction, creating an enhanced conductive interface. Thiolated DNA probes immobilized on Au-PdNPs via Au S bonds enabled specific recognition of U. oryzae DNA through hybridization. This design achieved exceptional sensitivity with a broad linear range (0.1 μM to 10 pM) and ultralow detection limit (3.67 pM), surpassing some traditional detection methods reported at present in speed and cost-efficiency. The genosensor exhibited high specificity against non-target sequences and delivered 96.6–98 % recovery in spiked rice samples, validating its effectiveness in practical applications. By integrating nanomaterials with electrochemical amplification, this work paves the way for field-deployable portable U. oryzae diagnostics in the future, offering a transformative strategy to mitigate economic and agricultural impacts.
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高影响因子
CHEMOSPHERE
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2019
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IF 5.108
Yuan Chen,Keqiang Hu,Yuancai Chen
In this study, we screened a new aerobic bacterium ( Bacillus megaterium Y-4) that can efficiently reduce Pd(II) with different electron donors. The best electron donor was sodium formate and the best reduction of Pd(II) were by log growth phase cells. The high removal capacity of Pd(II) (1658.3 mg/g) was obtained with 30 mg/L dry cell weight and 50 mg/L Pd (II) in the presence of 5 mM sodium formate. The removal amount of Pd(II) increased with initial Pd(II) concentrations ranging from 50 to 200 mg/L with 100 mg/L Pd(II) being completely removed by 148 mg/L dry cell weight in 6 h. The cell wall, periplasmic space and intracellular contents of B . megaterium Y-4 contains different kinds of enzymes for reducing Pd(II). In addition, the activity of extracellular and periplasmic enzymes was more sensitive to temperature than intracellular enzymes . XRD and XPS analysis revealed that the enzyme for reducing Pd(II) in B. megaterium Y-4 can tolerate a broad range of temperatures (20–60 °C) and pH (2.0–7.0) but was sensitive to oxygen. TEM analysis showed that biogenic palladium nanoparticles (Pd-NPs) were mainly distributed evenly in the periplasmic space of the live cells and were released from cells into aqueous solution, which reduced the toxicity of Pd(II), allowing Pd-NP recovery without cell destruction. B. megaterium Y-4 is a potential bacterium for efficient treatment and reclamation of Pd(II) pollution and formation of Pd-NPs.
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高影响因子
Desalination and Water Treatment
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2024
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IF 1
Qiuxiang Liu,Jinhui Fang,Sulin Ni,Shasha Tang,Zhiqiao He
A hybrid electrode comprised of Pd and Co 3 O 4 supported on Ni foam (Pd-Co 3 O 4 /Ni foam) was applied toward the dechlorination of 2,4-dichlorophenoxyacetic acid (2,4-D). The effects of the reaction condition, such as Co 3 O 4 and Pd loading, current density, initial concentration of 2,4-D, temperature and dissolved anions, on the electrochemical dechlorination process were investigated and interpreted based on an indirect reduction mechanism via active atomic H*. The optimal Pd and Co 3 O 4 loading were determined to be 0.47 and 0.51 mg/cm 2 , respectively. A highest current efficiency of 12.10% was obtained at a current density of 1.50 mA/cm 2 , an initial 2,4-D concentration of 50 mg/L and reaction temperature of 298 K, and the apparent activation energy of 2,4-D dechlorination by the Pd-Co 3 O 4 /Ni foam electrode was calculated to be 42.33 × 10 3 J/mol. In addition, dissolved anions such as S 2- , SO 3 2- and NO 3 - suppress the catalytic activity, whereas HCO 3 - and Cl - have a negligible effect on the reaction process. The Pd-Co 3 O 4 /Ni foam electrode can also be applied to the dechlorination of 2,4-D in natural water bodies as well as other chlorinated organic compounds, such as chlorophenols.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2013
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IF 3.473
Bo Yang,Yunfei Zhang,Shubo Deng,Gang Yu,Yonghong Lu,Jinhua Wu,Jianzhong Xiao,Gang Chen,Xiaobing Cheng,Lili Shi
The Pd/Al nanoparticles (NPs) prepared by aqueous cementation were employed to probe hydrodechlorination (HDC) efficiencies of 4-chlorophenol (4-CP) in aqueous solution and 2-chlorobiphenyl (2-PCB) in surfactant solution. Major factors affecting HDC performance were investigated including acidic types, pH conditions, and surfactant types and their concentrations. Among HCl, H 2 SO 4 , H 3 PO 4 , formic acid, and acetic acid, only HCl was the proper pH adjustor to initiate HDC reaction of 4-CP with Pd/Al NPs at pH 3.0 due to the particular penetration function of active Cl − on the compact oxide film of Al. Aqueous pH states obviously influenced HDC efficiency and its values stable at pH 3–4 were the optimum range for HDC with HCl adjustor. 0.389 mM of 4-CP could be almost completely dechlorinated into phenol after 30-min reaction using 2 g/L of Pd/Al NPs with 1.2 wt.% of Pd loading. In addition, the effect of surfactants on HDC process of highly hydrophobic 2-PCB was explored, which were employed for its better solubilization. The addition of surfactants including SDS, CTAB, Tween 80, or Brij 30 had adverse effect on HDC activity of Pd/Al NPs due to their inhibiting effect on Al corrosion. The adverse effect was closely related with the concentrations of surfactants especially for each CMC level and molecular structures.
研究领域:
环境化学
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纳米修复
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水处理
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催化
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污染物降解
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高影响因子
International Journal of Nanomedicine
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2026
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IF 6.5
Zhiqiang Lin,Hui Jiang,Yingying Zhou,Li Xu,Lixin Jiang,Jing Du
Purpose Triple-negative breast cancer (TNBC) is prone to relapse and metastasis due to the immunosuppressive state of the tumor microenvironment and limited exposure to relevant antigens, and chemotherapy alone has poor efficacy. We have developed a novel theranostic nanoplatform to address these problems: multifunctional nanocapsules (NCs) with a PD-L1-mediated gold shell induce immunogenic cell death (ICD) to remodel the immune microenvironment. PD-L1 and NLG919 dual immune checkpoints are programmed to synergistically sensitize photothermal therapy and chemotherapy, and photoacoustic imaging (PAI) is used to visualize and localize TNBC tissues for identification.Methods DOX-NLG919@PLGA@Au-antiPD-L1 NCs (DNPA-aPD-L1 NCs) were prepared using an improved single emulsion water-in-oil (O/W) solvent evaporation method, electrostatic adsorption, gold seed surface-induced crystallization reduction method, and carbodiimide method. A series of animal models were established to focus on the in vivo PAI of NCs, the effects of photochemotherapy combined with immunotherapy and antitumor therapy, ICD induced by NCs, the metabolic distribution of NCs, and toxicity tests.Results This project successfully constructed gold nanoshell-PLGA core NCs with PD-L1 antibody co-loaded with chemotherapeutic drugs doxorubicin and indoleamine 2,3-dioxygenase inhibitor NLG919. Laser-triggered release of DOX, NLG919, and photothermal therapy can synergistically induce immunogenic cell death (ICD), thereby enhancing tumor immunogenicity, inhibiting IDO, and reshaping the tumor immune microenvironment. This can effectively eliminate the primary TNBC lesions, inhibit recurrence and metastasis, significantly prolong the survival of tumor-bearing mice, and NCs have good in vivo biosafety. This diagnostic and therapeutic agent can be used for photochemotherapy, immunotherapy, and PAI to visualize and identify TNBC.Conclusion The photochemotherapy mediated by the DNPA-aPD-L1 NCs we developed, combined with tumor microenvironment remodeling and immune activation, shows great promise for the diagnosis and treatment of TNBC.
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高影响因子
Science China-Chemistry
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2026
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IF 9.7
Zheng Xia,Fu Yaoqiang,Ning Jing,Wang Haorui,Liu Hongfei,Cui Chunhua
Direct formate fuel cells (DFFCs) are becoming one of the most promising next-generation energy devices owing to their high energy density, low toxicity, and carbon neutrality. However, their practical application is hindered by the sluggish kinetics of the formate oxidation reaction (FOR) on conventional palladium (Pd)-based catalysts due to the strong adsorption of hydrogen intermediates (H ads ) that block the active sites. Herein, we tackled the above problem by tailoring the Pd electrocatalytic properties through the interfacial interaction with the hydroxyl group-abundant and oxophilic Co(OH) 2 substrate. This resulted in an impressive mass activity of 5.02 A mg
−1 Pd
for the synthesized Pd/Co(OH) 2 , approximately three times that of commercial Pd/C. Moreover, under high formate concentration, Pd/Co(OH) 2 exhibits significantly improved stability, i.e. , up to 24000 s sustainable current density with 100% selectivity toward CO 2 (CO 2 is actually converted to carbonate in alkaline media). Kinetic isotope effect (KIE) analysis and in situ Raman spectroscopy based mechanistic study reveal the excellent FOR performance of Pd/Co(OH) 2 originates from the partially oxidized Pd facilitated H ads oxidative removal and the more hydrophilic surface induced competitive HCOO − adsorption over H ads . This study demonstrates a rational strategy to optimize the Pd-based FOR electrocatalysts through the electronic and interfacial interactions with appropriate substrate to modulate the key intermediate adsorption-reaction kinetics.
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高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
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2014
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IF 3.84
Shan-Shan Li,Yuan-Yuan Hu,Ai-Jun Wang,Xuexiang Weng,Jian-Rong Chen,Jiu-Ju Feng
In this work, we developed a simple wet-chemical method for fabrication of worm-like Au–Pd nanostructures uniformly supported on reduced graphene oxide (Au–Pd/rGO), only with the assistance of polyethylene glycol monooleyl ether (Brij-35) as a growth-directing agent, a stabilizing agent, and a mild reducing agent. The as-prepared nanocomposites showed improved analytical performance for nitrite detection, which was further explored to construct a nitrite sensor with fast response, wide linear range from 0.05 to 1000.0 μM, low detection limit of 0.02 μM ( S / N = 3), good reproducibility, and long-term stability.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2026
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IF 3.9
Nuo Xu,Jianghui Miao,Fengquan Li,Yilin Tan,Junli Wang,Suni Hou,Yajuan Wu,Xingchao Dai
The hydrogenation of aliphatic nitriles is an atom-efficient and environmentally benign approach to the synthesis of primary amines. Here, a Pd/Ni/MgO-Al2O3–B catalyst with maximized Pd utilization was successfully designed and fabricated for the selective hydrogenation of aliphatic nitriles to corresponding primary amines, delivering a full conversion of lauronitrile with 99% laurylamine yield under mild conditions (60 °C, 1.5 MPa H2). The remarkable catalytic performance might be attributed to the PdNi synergy facilitating hydrogen adsorption and activation combined with the moderate-strength surface acidity of the MgO-Al2O3 composite support favoring lauronitrile adsorption and laurylamine desorption. Moreover, this catalytic system exhibits remarkable functional group tolerance, excellent recyclability, and exceptional performance for the in situ hydrogenation of aliphatic nitriles into primary amines in industrial wastewater treatment. This work not only provides an effective and practical protocol for the synthesis of primary amines from nitriles but also contributes to sustainable treatment of nitrile-containing wastewater.
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高影响因子
JOURNAL OF NANOBIOTECHNOLOGY
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2026
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IF 15
Liu Lin,Huang Kaiyan,Guo Hanjing,He Linping,Wang Xin,Wang Chao,Lin Jianqing,Huang Naihan,Miao Weibing
Internal radiation therapy is an irreplaceable modality for local tumor treatment, offering high-effective radiotherapy while sparing surrounding healthy tissues. However, current clinical non-biodegradable radionuclide implants suffer from permanent retention risks and limited efficacy against distal tumors due to inadequate immune activation. Herein, we engineered a biodegradable radionuclide-labeled oxygen-self-supplying calcium reservoir ( 131 I@CaO 2 ), fabricated through biomimetic mineralization followed by chloramine-T mediated 131 I-radiolabeling, for high-efficiency internal-radioimmunotherapy. 131 I@CaO 2 effectively enhances the internalization of 131 I to improve internal-radiotherapy and exhibits pH-responsive biodegradability, remaining stable under physiological condition while progressively degrading in tumor microenvironment to release H 2 O 2 , O 2 and Ca 2+ . These bioactivators synergistically enhance 131 I-induced internal-radioimmunotherapy through both radiosensitization and immune activation: H 2 O 2 and O 2 boost 131 I-induced ROS generation while Ca 2+ disrupted mitochondrial respiration to reduce oxygen consumption and ATP production (suppressing Ca 2+ pump activity), creating a positive feedback loop of oxygen supply and ion overload, thereby achieving radiosensitization; Concurrently, O 2 alleviates tumor hypoxia to downregulate PD-L1 expression and Ca 2+ overload activates dual pyroptosis pathways, establishing a robust immunogenic microenvironment. As a result, 131 I@CaO 2 effectively eliminates both primary and distant tumors by activating immune cells. This study simultaneously resolves the long-term retention risks of non-biodegradable radionuclide and the dichotomy between local radiotherapy and comprehensive immune modulation.
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PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2023
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IF 4.7
Xin Song,Fangjun Shao,Zijiang Zhao,Xiaonian Li,Zhongzhe Wei,Jianguo Wang
Precise regulation of reaction selectivity at high conversions is the key to non-terminated alkyne semi-hydrogenation. Herein, a support modification strategy was employed to incorporate trace amounts of Mg elements into alumina support. The modified support loaded Pd catalyst optimized the activity and selectivity of the non-terminated alkyne semi-hydrogenation reaction. The TEM and XRD characterization of the catalysts demonstrated the entry of Mg elements into the Al 2 O 3 lattice to achieve the modification of the support. For the 2-butyne-1-ol semi-hydrogenation reaction, the Pd 0.5 /Mg 1 @Al 2 O 3 catalyst showed 99 % conversion and 97 % selectivity of the cis product at hydrogen pressure of 0.1 MPa and 25 °C. The introduced Mg element changed the electronic structure of Pd nanoparticles in the catalyst. The precise regulation of the 2-butyne-1-ol semi-hydrogenation reaction was achieved by adjusting the ratio of Pd 0 to Pd 2+ using the synergistic effect of Pd 0 and Pd 2+ .
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Yi-Bai Sun,Miao Ni,Chen Chi,Dong-Rui Yang,Xue-Lu Chen,Qi Qi,Jian Li,Xing-Hua Xia
The development of efficient catalysts with low energy consumption has always been a key issue for sustainable hydrogen energy. Here, we report a catalyst comprising a single atomic Pd layer deposited on Au nanorods (ML-Pd@Au NRs) that shows a super-high HER activity and ultra-low overpotential under localized surface plasmon resonance condition. The Au NR plays triple determining roles in HER performance via adjusting the electronic structure and lattice strain of Pd that effectively reduces the adsorption energy of H-adatoms, eliminating the penetration of H adatoms in multilayer Pd crystal that decreases the H adatoms diffusion kinetics, and providing high energetic hot charge carriers under near-IR light irradiation that decreases the activation energy and onset potential of HER. The single atomic Pd layer on Au NRs ensures the hot electron transfer as the main dissipation pathway of the plasmonic hot charge carriers for HER. Thus, under near-IR light irradiation, HER on ML-Pd@Au NRs occurs with a high mass activity of 17.47 mA mg −1 at 100 mV and a very low overpotential of 13 mV at 10 mA cm −2 , which are superior to the commercial Pd/C and commercial Pt/C catalysts under the same conditions.
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