Journal of Physical Chemistry C
·
2024
·
IF 3.3
Dandan Zhou,Youxi Wang,Dan Wang,Qingqing Wang,Xiaolin Tan,Zhenyu Li,Xiang Shao
The interaction details of phenol with transition metal oxides are important for understanding the mechanisms of organic pollutant degradation as well as functionalization of oxide semiconductors through organic chromophores. In this work, we apply low-temperature scanning tunneling microscopy in combination with density functional theory calculations to explore the adsorption structures and interface charge transfer of phenol on a ZnO(101̅0) surface. Distinct adsorption configurations of phenol are clearly determined. For low coverage conditions, the less-stable standing-up configuration of phenol prevails both at 77 K and room temperature (RT), but all transform into more stable lying-down configurations and assemble into a linear chain structure orientating along the [0001] direction at increased coverage. The lying-down phenols dominate in the two-dimensional structures formed at either RT or 400 K, presenting a c(2 × 2) periodicity at medium coverage or a p(2 × 1) superstructure at saturation coverage. Because different phenol configurations have distinct charging characteristics, their aggregation state hence plays a critical role in switching phenol from electron acceptors to electron donors relative to the ZnO surface. These results are believed to provide important inputs for the deepened understanding of catalytic removal of phenol pollutes as well as for the design of new ZnO–organic functional systems.
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Refrigeration
·
2025
·
IF 3.8
Yuxin Yang,Rixin Zhang,Rui Liang,Yike Gao,Chenyang Zhang,Junwei Cui,Shengshan Bi
In this work, ZnO nanoparticle was surface modified with the PFPE-acid as ligand. The modified ZnO particle size was about 30 nm measured by SEM. The modified ZnO/HFE-7100 nano-coolants with mass fractions of 0.10 % - 0.40 % were prepared and characterized, and their dispersion stabilities were evaluated by visual sedimentation and UV spectrophotometer. Then the thermal conductivities of these nano-coolants were measured using a visualized transient hot-wire system. Results show that the thermal conductivity of the modified ZnO/HFE-7100 nano-coolants increased with the increasing mass fraction of nanoparticles and temperature, and 4.94 %-16.24 % enhancement were found compared to the base fluid. Based on the experimental data, a thermal conductivity model of nano-coolant was developed, and the deviation of the calculated thermal conductivity from the experimental value was less than ± 1.10 %.
✓ 已验证
产品关联
DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2024
·
IF 10.8
Asif Hassan Raza,Shumail Farhan,Zhixian Yu,Yan Wu
This work illustrates the novelty of double S-scheme ZnS/ZnO/CdS ternary heterojunction photocatalyst with efficient photocatalytic activity. The sample with optimal CdS content, ZnS/ZnO/CdS-14% (ZZC14%), displayed the maximum H 2 evolution rate of 4.1 mmol·g ‒1 ·h ‒1 . The maximum photocatalytic performance was approximately 2 and 13 times higher than their corresponding counterparts, ZnS/CdS and ZnO/ZnS, respectively. A high AQE of 19.8% under 420 nm was obtained. Additionally, the slight changes in H 2 evolution activities and retentions of crystal structures after six successive cycles indicate the stability of the photocatalyst. In accordance with the theoretical calculations and experimental results, the remarkable enhancement in photocatalytic activity is attributed to fast electron transfer and separation as well as the intimate contact due to mutual interaction between S-scheme. This work highlights an innovative approach to constructing a dual S-scheme photocatalytic system with high separation and fast migration capabilities of photogenerated charge carriers for splitting water to produce hydrogen. Download: Download high-res image (131KB) Download: Download full-size image
✓ 已验证
产品关联
DOI
高影响因子
Molecular BioSystems
·
2011
·Vol. 7
·期 8
·2452-2458
·
IF 3.825
Jianbo Xiao,Feijiu Wang,Jie Liu,Litong Wang,Guoyin Kai,Xibin Yu
Zero-dimensional nanostructures such as ZnO#ZnS QDs heterojunctures (QDHJs) are green nanoparticles and have gained a tremendous amount of attention. However, very little information is available on the effects of these heterojunctures on the transportation of drugs in blood. Herein, stilbenes were studied for their affinities for common bovine plasma proteins (CBPP) in the presence and absence of QDHJs with different diameters. The affinities of QDHJs for CBPP improved with increasing QDHJs size. QDHJs improved the affinities of resveratrol and polydatin for CBPP by 14.74% to 22.36% and 12.56% to 21.34% depending on the size of QDHJs. The number of binding sites (n) between resveratrol and polydatin for CBPP in the presence of QDHJs were 1.04 ± 0.03 and 1.06 ± 0.04, which were obviously higher than those in the absence of QDHJs (n = 0.89 and 0.92). QDHJs in blood will decrease the free concentration of stilbenes and weaken their pharmacological effects.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Junzi Huang,Mengjie Lu,Peng Wei,Yahong Xie,Huihui Xie,Min Liu,Liang Li,Jindou Hu,Zhiwei Zhang,Ying Qi
Organic pollutants pose a great threat to human health due to the bioaccumulation, toxicity, carcinogenicity and mutagenicity. However, it is not easily degraded because of the stable properties. Therefore, the current challenge is to degrade organic pollutants efficiently with low-energy consumption. In this study, a Z-type heterojunction material CeO 2 /ZnO was constructed by hydrothermal and wet chemistry methods, and the photocatalytic degradation performance was studied using tetracycline (TC) as a model organic pollutant. It was showed that the 40% CeO 2 /ZnO composite material has excellent activity, capable of degrading 95.9% of TC in 75 min, and has good resistance to common interference ion. The results demonstrated that the 3D nanoflower of the composite material provided a large specific surface area for photocatalytic reaction, significantly improving the catalytic active sites. And the CeO 2 /ZnO could effectively reduce the recombination rate of photogenerated holes and electrons and effectively broadened the visible light absorption range, expanding the application range of the heterojunction and improving the utilization efficiency of the solar energy. What is more, the prepared heterojunction had outstanding photocatalytic activity in actual water samples. It can be used to degrade refractory organic pollutants, such as ciprofloxacin, methylene blue, rhodamine B, etc.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Aerzigu Xukeer,Jin Li
In this study, ZnO/TiO 2 nanosheets were synthesized using a hydrothermal method followed by annealing. The resulting hierarchical ZnO–TiO 2 heterostructures exhibited improved gas-sensing performance compared with pure ZnO. We demonstrated that tuning the ratio of Zn to Ti components in the heterostructure allowed us to adjust the sensor stability , with the best- performing sample having a Zn:Ti ratio of 2:1. A notable reduction was observed in both the sensor response and recovery times, down to 22 and 17 s, respectively, by utilizing nanosheet- structured ZnO/TiO 2 heterojunctions. To gain insight into the interaction between the sensing materials and formaldehyde (HCHO) molecules, we performed first-principles calculations to examine the density of states , charge transfer, and energy of adsorption. Our approach to constructing heterogeneous structures contributes to overcoming the low desorption efficiency and slow response-recovery time of pure ZnO for gas-sensing applications.
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2024
·
IF 3.7
Yuanjian Xie,Pingxiong Cai,Xiaofeng Cao,Bo Chen,Yuanfeng Pan
To solve the problems that poly(vinyl alcohol) (PVA) easily breeds bacteria and swells in a humid environment, PVA and ZnO nanopillar (ZnO NP) components were composed to generate PVA/ZnO NP composite films via a simple combination process of blending and heat treatment in this study. Here, ZnO NPs endowed composite films with good antibacterial properties, and the etherification and dehydration of hydroxyl groups between PVA molecular chains induced by heat treatment resulted in the composite films having excellent water-swelling resistance. Most importantly, PVA/ZnO NP composite films revealed excellent tensile strength in both humid (52.85 MPa) and dry (74.63 MPa) environments. In addition, PVA/ZnO NP composite films showed good antibacterial and antisepsis abilities as well as preservation functions in the packaging test of half-cut apples. The current work disclosed an easy strategy for producing a PVA-based antibacterial film for packaging materials that are water-resistant and highly strong, making them suitable for applications in humid environments.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Arabian Journal of Chemistry
·
2024
·
IF 5.3
Jiyun Gao,Youyou Yin,Yongjing Guo,Lijuan Jia,Futing Xia,Chenhui Liu,Ming Hou,Fang Wang
NO 2 is a toxic gas that poses a significant threat to the environment and human health. In this work, one-dimensional ZnO nanowires and two-dimensional layered titanium carbide (Ti 3 C 2 T x ) have been prepared by hydrothermal and selective chemical etching methods, respectively. The Ti 3 C 2 T x /ZnO composites are synthesized by electrostatic self-assembly method. The characterization results indicate that the ZnO nanowires are uniformly dispersed on the surface of layered Ti 3 C 2 T x to form a heterostructure. Meanwhile, the gas sensitive performance of Ti 3 C 2 T x /ZnO composite material is investigated and compared with that of pure Ti 3 C 2 T x . The results reveal that the composite exhibits a high selectivity as well as sensitivity with a response value (S = Rg/Ra) of 18.66 to 100 ppm NO 2 at 250 ℃, which is 4.3 times higher than that of pure Ti 3 C 2 T x . This proves that the prepared composite material is an effective sensing material for detecting NO 2 gas.
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Electrochemical Science
·
2025
·
IF 2.4
Wei Zhou,Kun Wang,Lipeng Pei
Early and accurate detection of ovarian cancer is essential for improving patient outcomes, as most cases are diagnosed at an advanced stage. Cancer antigen 125 (CA125) is a clinically established biomarker that plays a critical role in the diagnosis, prognosis, and recurrence monitoring of epithelial ovarian carcinoma. This study presents a dual-channel electrochemical platform employing ZnO@TiO 2 nanotube arrays for the immunoanalysis of CA125 in complex biological matrices. The nanostructured electrode, fabricated through a sequential hydrothermal and annealing process, exhibited vertically aligned tubular morphology with a mean length of ~2.5 µm and shell thickness of ~20 nm. Electrochemical measurements leveraged dopamine and cytosine as reduction and oxidation probes, respectively, enabling orthogonal signal acquisition. Differential pulse voltammetry revealed wide linear response ranges: 0.1–1000 mU∙mL -1 for cytosine (R² = 0.996; LOD = 0.0002 mU∙mL -1 ) and 0.1–100 mU∙mL -1 for dopamine (R² = 0.992; LOD = 0.0025 mU∙mL -1 ). Impedance spectroscopy confirmed systematic resistance increases during antibody immobilization and antigen binding. The sensor demonstrated excellent reproducibility (RSD ≤ 8.9%), signal stability over 30 days (≥89.1% retention), and selectivity against six common interferents with <5% deviation. Application in 0.2% diluted serum showed recoveries from 99.6% to 100.0% and RSDs <2.01%, validating its performance in real matrices. The combination of core–shell architecture, dual-probe mechanism, and surface regeneration capability positions this system as a promising diagnostic platform for clinical biosensing.
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Taoyang Cai,Shangjie Ge-Zhang,Hongbo Mu
The development of the petrochemical industry necessitates the treatment of oily industrial wastewater. Addressing the separation, recovery, and reuse of oily wastewater with low-cost, high-efficiency, and environmentally friendly methods has become a significant focus in environmental protection. The search for oil-water separation materials with specific functionality and environmental durability is now a priority. In this study, natural wood was delignified, and ZnO nanoparticles were grown within the wood aerogel to create a functionalized nano-composite wood aerogel. The porous ZnO/DW aerogels exhibited an average adsorption capacity of 17.66 g g −1 . Due to the presence of a hydration shell formed by hydrogen bonding, the water-saturated ZnO/DW aerogel exhibits hydrophilic and oleophobic properties. The separation device achieved a water flux of 39,400 L m −2 h −1 and a separation efficiency of over 98.5 %, effectively facilitating oil-water separation. Furthermore, the synergistic effect of ZnO nanoparticles and wood aerogels resulted in the photocatalytic degradation of methylene blue in solution by up to 92.94 %. The cycle tests show the excellent stability of the sample in compression-release cycle, adsorption-extrusion cycle and photocatalytic degradation cycle.
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Zhaopeng Li,Pei Li,Jinfu Zhang,Helei Yang,Zhiguo Zhu,Hua Zhou,Xia Sun,Zhenhe Wang
This study reports on the development of a NiO quantum dot-modified ZnO gas sensor, which is designed for detecting ethyl formate, a crucial indicator of fish meal spoilage. The results indicated that NiO quantum dots were uniformly dispersed on the surface of ZnO, leading to the formation of a P N heterojunction that enhanced the gas sensing properties. Among the sensors tested, the S2 sensor (with a NiO doping of 0.1 mmol) exhibited the highest response value of 15.75 when exposed to 100 ppm of ethyl formate at 260 °C, additionally presented out excellent selectivity, linear response behavior, and long-term stability. The superior performance of the S2 sensor can be attributed to its unique jackfruit-like structure and the formation of P N junctions. These features increase the number of active sites and modulate the electronic properties of the material. The S2 sensor has been implemented for the assessment of fish meal freshness. This study emphasizes the great potential of this sensor for the real-time monitoring of fish meal freshness, offering significant applications in the field of food and feed safety.
✓ 已验证
产品关联
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Zheyan Hu,Sarula Li,Feng Li,Tianqi Wang,Hong Shao,Xiangting Dong
Herein, ZnO-SnO 2 Janus nanofibers (NFs) were synthesized by a parallel electrospinning method and its sensing performances were tested. Considering the compositions of the two metal oxide semiconductors in Janus structure, different ratios of ZnO and SnO 2 were designed and controlled. The optimum ratios of ZnO and SnO 2 was 1:2 by analyzing their sensing performances to triethylamine (TEA) gas. Gas sensors based on ZS-12 Janus NFs exhibited a high response to TEA (45.2) and an excellent sensing response/recovery reproducibility. In order to investigate the sensing mechanism of Janus structure, ZnO NFs and SnO 2 NFs were synthesized and used as controlled experiment. The results indicated that the heterostructures in Janus NFs is the key factor for the enhanced TEA sensing performances. The electrons flowed in the ZnO-SnO 2 Janus structure leading to the variation of ionic oxygen species and electron depletion layer. These phenomena improved the reaction of TEA gas molecules with ionic oxygen species so that the TEA sensing performances were enhanced. Based on the Janus structures, a satisfactory gas sensor for detecting TEA gas were developed. Significantly, this work investigated the sensing mechanism of Janus structures and provided an efficient strategy for the gas sensing materials.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）