JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2024
·
IF 8
Yong Wang,Shikai Xue,Yuhao Liao,Haiyan Wang,Qiujun Lu,Ningli Tang,Fuyou Du
In this study, Ag/Bi 2 O 3 /Bi 5 O 7 I with s-scheme heterostructures were successfully synthesized in situ by nano-silver modification of CUA-17 and halogenated hydrolysis.The growth rate of Bi 2 O 3 crystals was effectively controlled by adjusting the doping amount of Ag, resulting in the formation of a facet-coupling heterojunctions . Through the investigation of the microstructure and compositional of catalysts, it has been confirmed that an intimate facet coupling between the Bi 2 O 3 (120) facet and the Bi 5 O 7 I (312) facet, which provides robust support for charge transfer. Under visible light irradiation, the AgBOI.3 heterojunction photocatalyst exhibited an outstanding degradation rate of 98.2% for Bisphenol A (BPA) with excellent stability. Further characterization using optical, electrochemical, impedance spectroscopy, and electron spin resonance techniques revealed significantly enhanced efficiency in photogenerated charge separation and transfer, and confirming the s-scheme structure of the photocatalyst. Density functional theory calculations was employed to elucidate the mechanism of BPA degradation and the degradation pathway of BPA was investigated by LC-MS. Finally, the toxicity of the degradation intermediates was evaluated using T.E.S.T software.
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高影响因子
LANGMUIR
·
2024
·
IF 3.7
Adugna Boke Abdeta,Feyisa Wedajo,Qinhan Wu,Dong-Hau Kuo,Ping Li,Hanya Zhang,Ting Huang,Jinguo Lin,Xiaoyun Chen
Cellulose plays a significant role in designing efficient and stable cellulose-based metallic catalysts, owing to its surface functionalities. Its hydroxyl groups are used as anchor sites for the nucleation and growth of metallic nanoparticles and, as a result, improve the stability and catalytic activity. Meanwhile, cellulose is also amenable to surface modifications to be more suitable for incorporating and stabilizing metallic nanoparticles. Herein, the Ag-/Bi-doped Mo(S,O)3 trimetallic sulfo-oxide anchored on B and N codoped cellulose (B–N–C) synthesized by a facile approach showed excellent stability and catalytic activity for PHER at 573.28 μmol/h H2 with 25 mg of catalyst under visible light, and 92.3% of the 4-nitrophenol (4-NP) reduction was achieved within 135 min by in situ-generated protons. In addition to B and N codoping, our use of the calcination method for B–N–C preparation further increases the structural disorders and defects, which act as anchoring sites for Ag-/Bi-doped Mo(S,O)3 nanoparticles. The Ag-/Bi-doped Mo(S,O)3@B–N–C surface active site also stimulates H2O molecule adsorption and activation kinetics and reduces the photogenerated charge carrier’s recombination rate. The Mo4+ → Mo6+ electron hopping transport and the O 2p and Bi 6s orbital overlap facilitate the fast electron transfer by enhancing the electron’s lifetime and photoinduced charge carrier mobility, respectively. In addition to acting as a support, B–N–C provides a highly conductive network that enhances charge transport, and the relocated electron in B–N–C activates the H2O molecule, which enables Ag-/Bi-doped Mo(S,O)3@B–N–C to have appreciable PHER performance.
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高影响因子
TALANTA
·
2024
·
IF 5.6
Zhiquan An,Xiaoyu Jian,Wenjun Hong,Xilong Zhang,Jiateng Ma,Minjie Li,Bihong Zhang,Liang-Hong Guo
Dibutyl phthalate (DBP), a common and outstanding plasticizer, exhibits estrogenic, mutagenic, carcinogenic, and teratogenic properties. It is easily liberated from plastic materials and pollutes aquatic ecosystems, endangering human health. Therefore, highly sensitive and selective DBP detection methods are necessary. In this work, a free-of-electronic sacrificial agent photoelectrochemical (PEC) aptasensor for DBP detection was constructed using a novel Z-scheme Bi-doped BiOI/Bi 2 S 3 (Bi-BIS) p-n heterojunction. The Bi-BIS composites had higher visible-light absorption, charge transfer, and separation efficiency. This is attributed to the synergistic effect of the formation of Z-scheme p-n heterojunction between BiOI and Bi 2 S 3 , the plasma resonance effect of metallic Bi and photosensitization of Bi 2 S 3 , thus exhibiting large and stable photocurrent response in the absence of electron sacrificial agent, that was 10.4 and 6.4 times higher than that of BiOI and Bi 2 S 3 , respectively. Then, a DBP PEC aptasensor was constructed by modifying the DBP aptamer on the surface of the ITO/Bi-BIS electrode. The aptasensor demonstrated a broad linear range (2–500 pM) and a low detection limit (0.184 pM). What's more, because there is no interference from electronic sacrificial agent, the aptasensor exhibited excellent selectivity in real water samples. Therefore, the proposed PEC has considerable potential for DBP monitoring.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Kun Wei,Xiu Yun Gu,En Zi Chen,You Qing Wang,Zhe Dai,Zi Ran Zhu,Shi Qiang Kang,Ao Chen Wang,Xiu Ping Gao,Geng Zhi Sun,Xiao Jun Pan,Jin Yuan Zhou,Er Qing Xie
SnO 2 /TiO 2 type II heterojunctions are often introduced to enhance the separation efficiency of photogenerated carriers in photoelectrochemical electrodes, while most of these heterojunctions are of core–shell structure, which often limits the synergistic effect from the two components. In this work, dissymmetric SnO 2 /TiO 2 side-by-side bi-component nanofibers (SBNFs) with tunable composition ratios have been prepared by a novel needleless electrospinning technique with two V-shape connected conductive channels (V-channel electrospinning). Results show that this V-channel electrospinning technique is more stable, controllable and tunable for the large-scale preparation of SBNF materials compared to the traditional electrospinning using two side-by-side metal needles. And these SnO 2 /TiO 2 SBNFs are dissymmetric and comprised of a tiny SnO 2 NF (tunable diameter within 20–80 nm) and a Sn-doped TiO 2 NF (diameter of ~ 250 nm) with a side-by-side structure. Moreover, the dye-sensitized solar cells (DSSCs) based these dissymmetric SnO 2 /TiO 2 SBNFs show the maximum power conversion efficiency (PCE) of 8.3%, which is 2.59 times that of the ones based on the TiO 2 NFs. Series of analyses indicate that the enhancements in PCE could mainly be due to the improved electron transport via SnO 2 NFs and the enhanced carrier separation via dissymmetric SnO 2 /TiO 2 heterojunction interface. This research will give some new insight in the preparation of SBNFs for high-performance photoelectrochemical devices.
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JOURNAL OF SEPARATION SCIENCE
·
2022
·Vol. 45
·期 9
·1580-1589
·
IF 3.614
Mengyao Fu,Baichun Wang,Linhua Yi,Xueting Jin,Yinghua Yan,Chuan-Fan Ding
In this work, a novel porous bifunctionalized composite material was synthesized via a simple method. Gold nanoparticles are uniformly dispersed on the surface of the biomimetic honeycomb chitosan membrane through the interaction between amino and Au, and then cysteine and glutathione are successfully grafted onto the surface of the Au by the Au-S bond. The modification of cysteine and glutathione makes this bifunctionalized composite material have significant advantages of superhydrophilicity and small steric hindrance simultaneously. This material manifests excellent property in glycopeptides enrichment, with high selectivity (1:5000), low detection limit (0.1 fmol·μL –1 ), high recovery rate (99.4 ± 0.5%), and good repeatability. In addition, with the help of nano-flow liquid chromatography tandem mass spectrometry, this composite achieved excellent performance in efficiently enriching glycopeptides in the serum of healthy people and nasopharyngeal carcinoma's disease patient. More excitingly, further gene ontology analysis of molecular function and biological process indicated that 41 original glycoproteins of the identified glycopeptides from serum of nasopharyngeal carcinoma's disease patient significantly partake in numerous cancer-associated events, including protease binding, calcium ion binding, enzyme binding, extracellular matrix organization, cellular response to tumor necrosis factor, and inflammatory response.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Junli Nie,Gangqiang Zhu,Weibin Zhang,Jianzhi Gao,Peng Zhong,Xiaotao Xie,Yu Huang,Mirabbos Hojamberdiev
Flower-like n -type CeO 2-δ is hybridized with p -type β-Bi 2 O 3 nanoparticles to design a novel β-Bi 2 O 3 /CeO 2-δ p - n heterojunction photocatalyst via a thermal treatment process of Bi/Ce(CO 3 )(OH) precursor. The synthesized β-Bi 2 O 3 /CeO 2-δ exhibits a remarkable enhancement in NO removal and significant suppression of toxic intermediates nitrogen dioxide (NO 2 ) under visible light irradiation. The superior photocatalytic activity of β-Bi 2 O 3 /CeO 2-δ for NO removal is mainly derived from the synergistic effects of the oxygen vacancies (OVs) and p-n heterojunction. The OVs not only enhance the visible light utilization and boost the separation of electron-hole pairs but also improve the adsorption and activation of NO and O 2 . Particularly, the p-n heterojunction is beneficial for the interfacial migration of photogenerated charge carriers. Electron spin resonance (ESR) and trapping experiment reveal that the synergistic effects of OVs and p-n heterojunction can induce the generation of more active species. The electrochemical measurements and density-functional theory (DFT) calculations in-depth confirm that both p-n heterojunction and OVs can accelerate the interfacial charge transfer, resulting in the deep oxidation of reactants. Therefore, the flower-like β-Bi 2 O 3 /CeO 2-δ p-n heterojunction photocatalyst exhibits an advanced photocatalytic activity for deep NO removal and a suppressed NO 2 generation. In addition, monitoring the reaction products by in situ Fourier transform infrared spectrum (FTIR) further validates that the main products of nitrates are formed during the photocatalytic process. This work demonstrates a straightforward approach for construction of p-n heterojunction photocatalysts, which can enhance the effective photocatalytic activity and stability for NO removal.
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JOURNAL OF RARE EARTHS
·
2026
·
IF 9.6
Biao Xu,Zihao Xu,Chunyu Li,Jian Peng,Xingyu Li,Wubin Dai
Phosphor with thermally stable and highly efficient photoluminescence (PL) is a premise/challenge for use in high-quality phosphor-converted light-emitting diodes (pc-LEDs). Herein, via a facile solid-phase sintering method in air, a negative thermal quenching (TQ) blue emitting SrGa 2 B 2 O 7 (SGB): Bi is reported, mainly associating with the underlying collaborative effect of negative volumetric thermal expansion of rigid host, heterovalent substitution (Bi 3+ → Sr 2+ )-induced V Sr /V O vacancies, and generating self-reduction ions (Bi 2+ ). For charge balance under the condition of temperature rising, both opposite process of self-oxidation (Bi 2+ to Bi 3+ ) and charge release from trap levels can compensate blue-PL loss. This phosphor is comparable to Eu 2+ /Ce 3+ -activated blue-emitting phosphors, and even boasts superior quantum efficiency (QE) and thermal stability. Via artificially codoping Na + for charge compensation, the QE of the SGB:Bi/Na can be further significantly enhanced. Color-tunable PL is achieved via cascade-connected energy transfer (ET) from Bi 3+ to Tb 3+ (green)/Eu 3+ (red) in SGB: Bi/Na/Tb/Eu that possesses high QE/stability than the case of blue/green/red tricolor phosphor blends adopted in warm white LEDs (wLEDs). Finally, the SGB: Bi/Na and SGB: Bi/Tb/Eu/Na are respectively, encapsulated with distinct encapsulants via either traditional or remote “capping” packaging strategy to form blue LEDs and wLEDs, showcasing splendid electroluminescence behaviors and luciferous application prospects.
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Materials Today Energy
·
2023
·
IF 9.3
Li Qiao,Xingkun Wang,Ren Xu,Canhui Zhang,Kaiyue Chen,Kecheng Tong,Huanlei Wang,Shuixing Dai,Lei Chu,Minghua Huang
It is of paramount importance to develop highly efficient and Cl − corrosion-resistant bi-functional catalysts for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) for application in seawater-based Zn-air batteries (S-ZABs), but the process remains full of challenges. Herein, a facile and effective strategy was adopted to fabricate the N-doped carbon shell armored ‘Janus’ Co/Co 9 S 8 heterojunction catalyst (denoted as Co/Co 9 S 8 -NMC). The well-defined ‘Janus’ structure endows the catalyst with a ‘synergistic effect’ between Co and Co 9 S 8 species, which can also accelerate the electron transfer via ‘Janus’ interfaces, thus boosting ORR/OER performance. Besides, N-doped carbon shells can be considered armor for protecting the catalyst from Cl − corrosion. By virtue of these merits, the resulting Co/Co 9 S 8 -NMC catalyst exhibits excellent catalytic activity for ORR and OER in seawater electrolyte, accompanied by a half-wave potential of 0.83 V and a low overpotential of 298 mV to achieve a current density of 10 mA/cm 2 . Besides, the S-ZABs based on the Co/Co 9 S 8 -NMC catalyst deliver a high maximum power density of 162.29 mW/cm 2 and robust stability over 600 h. This work advances the development of highly efficient bi-functional catalysts for S-ZABs.
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INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Jing Jiang,Wei Wei,Ying Tang,Shiyu Yang,Xinzhi Wang,Ying Xu,Lunhong Ai
Catalytic hydrogenation reduction based on sodium borohydride (NaBH4) has gained attention as an appealing “one-stone-two-birds” approach for the simultaneous elimination of nitroaromatic pollutants and the production of high-value aminoaromatics under mild conditions. However, the slow kinetics of NaBH4 dissociation on the surface of catalysts restrict the catalytic hydrogenation reduction efficiency. Herein, we report an intelligent localized sulfidation strategy for an in situ implantation of Bi2S3 nanorods within quasi-Bi-MOF architectures (Bi2S3@quasi-Bi-MOF) by fine-tuning the pyrolysis temperature. In this novel Bi2S3@quasi-Bi-MOF, the porous quasi-Bi-MOF enables efficient adsorption of BH4– and 4-nitrophenol (4-NP), while Bi2S3 facilitates the BH4– dissociation to form Hads* species adsorbed on the catalyst surface. Benefiting from the synergistic structure, Bi2S3@quasi-Bi-MOF exhibits excellent performance for the catalytic reduction of 4-NP, delivering a high turnover frequency (TOF) of 1.67 × 10–4 mmol mg–1 min–1 and an extremely high normalized rate constant (knor) of 435298 s–1 g–1. The kinetic analysis and electrochemical tests indicate that this catalytic hydrogenation reduction follows the Langmuir–Hinshelwood mechanism. This study enriches the synthetic strategy of MOF-based derivatives and offers a new catalytic platform for hydrogenation reduction reactions.
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高影响因子
Nanoscale
·
2020
·Vol. 12
·期 32
·17064-17073
·
IF 6.895
Jinghua Li,Daoming Zhu,Weijie Ma,Yang Yang,Ganggang Wang,Xiaoling Wu,Kunlei Wang,Yiran Chen,Fubing Wang,Wei Liu,Yufeng Yuan
Hepatocellular carcinoma is the fourth leading cause of cancer-related deaths globally. Advanced nanomaterials have emerged as effective approaches to liver cancer therapy such as photothermal therapy. However, limited penetration depth of photothermal agents (PTAs) activated in the NIR-I bio-window and thermoresistance due to heat shock proteins restrict the therapeutic efficacy of PTT in HCC. Herein, we prepared a Bi@ZIF-8 (BZ) nanomaterial by a simple one-step reduction method. Then, gambogic acid, a natural inhibitor of Hsp90, was efficiently loaded onto the BZ nanomaterial via physical mixing. The characterization of the nanomaterial and release of GA due to pH change or NIR-light irradiation were separately studied. Photothermal conversion efficiency was calculated, and therapeutic studies were carried out in vitro and in vivo. This nanomaterial exhibited a significantly enhanced drug release rate when the temperature was increased under acidic conditions and had good light stability under laser irradiation and a photothermal conversion efficiency of about 24.4%. In addition, this novel nanomaterial achieved good therapeutic effects with less toxicity in vitro. The BZ nanomaterial loaded with GA caused tumor shrinkage as well as disappearance and effectively downregulated Hsp90 expression in tumors in vivo. Moreover, this novel nanomaterial exhibited good biocompatibility and potential for application in low-temperature PTT with excellent tumor destruction efficacy.
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MACROMOLECULAR MATERIALS AND ENGINEERING
·
2020
·Vol. 305
·期 4
·1900835
·
IF 3.853
Yi Yang,Ling-yan Li,Bo Yin,Ming-bo Yang
Conductive composites based on polymers and conductive nanofillers are widely studied as a promising material. The rational design of 3D conductive networks in composites is crucial to improve their electrical conductivity and reduce the dosage of nanofillers. Herein, poly(vinylidene fluoride) (PVDF) and polystyrene (PS) bi-continuous structures with modified carbon nanotubes (CNTs) tailored to anchor at the interface are designed to achieve an ultralow electrical percolation threshold because of the formation of a thin interfacial conductive layer. In this work, the modification of CNTs with poly(methyl methacrylate) (PMMA), which contributes to the improvement of the compatibility between PVDF and CNTs, is effective to control the distribution of CNTs in composites. It promotes the migration of CNTs from the PS phase to the interface of PVDF and PS. Consequently, the interfacial conductive layer is formed at a low CNT content, and the electrical percolation threshold of PVDF/PS/CNTs-PMMA nanocomposites is only 0.07 vol%, having a great decrease of about 50% compared with that of PVDF/PS/CNTs nanocomposites. Thus, it is demonstrated that the distribution of CNTs can be tailored to anchor at the interface by proper chemical modification to form an interfacial conductive layer and a decrease of percolation threshold can also be achieved.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Kuan Wang,Tong Sun,Hui Ma,Run-Jing You,Zhen-Hong He,Jian-Gang Chen,Huan Wang,Weitao Wang,Yang Yang,Lei Wang,Zhao-Tie Liu
The conversion of CO 2 into chemicals with value-added can be achieved through the process of photocatalysis, which holds significant importance in the fields of energy and environmental sustainability. Herein, a unique S-scheme In 2 O 3 /Bi/BiOCl heterojunction nanoflower with abundant oxygen vacancies was fabricated by a self-assembly strategy, in which the introduction of In 2 O 3 could effectively regulate the in-situ growth of metal Bi and oxygen vacancy on the surface of BiOCl nanosheet. The nanoflower In 2 O 3 /Bi/BiOCl photocatalysts exhibited exceptional photocatalytic performance in the CO 2 reduction with H 2 O, ascribing to the synergistic effect of the unique S-scheme heterojunction, the surface plasmon resonance (SPR) effect of metal Bi, and oxygen vacancy engineering. Surprisingly, the In 2 O 3 /Bi/BiOCl-4 composites achieved 34.53 μmol⋅g −1 ⋅h −1 photoreduction efficiency of CO 2 -to-CO with high selectivity (97.5 %) and high stability, which was 3.12 times higher compared to the pure BiOCl. The S-scheme heterojunction of In 2 O 3 /Bi/BiOCl-4 nanoflower can promote carrier separation efficiency and improve light utilization. Meanwhile, the large specific surface area and abundant oxygen vacancies of the nanoflower with 3D/0D/2D structure self-assembly can provide more adsorption and active sites for CO 2 photocatalytic reaction. The SPR effect of the in-situ generated metal Bi can further enhance charge transfer to accelerate the photoreduction process of CO 2 . The present study provides a novel approach for the in-situ construction of S-scheme heterojunction photocatalysts with SPR effect and oxygen vacancies to pursue efficient photocatalytic CO 2 reduction in the water phase
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