MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Ziwen Ding,Feiyu Zhang,Haotian Zheng,Yunhe Zhao,Mengfei Ma,Man Zhang,Hongpeng Li,Guodong Li,Siqi Li
Hydrogen sulfide (H 2 S), emerges as a toxic gas that poses significant threats to human life and health, even at low concentrations (100 ppb). Therefore, the detection and monitoring of H 2 S are crucial for ensuring mining safety. Herein, zinc stannate (Zn 2 SnO 4 , ZTO) was synthesized using hydrothermal method, and copper-doped zinc stannate material (xCuZ) were synthesized by in-situ derivation of metal organic frameworks (MOFs). A ppb-level H 2 S gas sensor with rapid response and recovery was developed. The material with a Cu addition of 20 wt% (20CuZ) exhibited the optimal performance, with a sensitivity of 8 to 10 ppm H 2 S at 275 °C, which was approximately 8 times higher than that of pure ZTO, and surprisingly, exhibited high signal-to-noise ratio and rapid response and recovery characteristics (21 s/27 s) at ultra-low concentrations of 10 ppb. The improvement in gas sensing performance can be primarily attributed to the significant adsorption capability of Cu for H 2 S. Furthermore, the incorporation of Cu into the ZTO material induces lattice defects and increases the concentration of oxygen vacancies, thereby enhancing the gas sensing performance. The sensor produced in this study has the potential to mitigate the risks with mining operations while advancing the development of gas sensor technology.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Bang Li,Xiaohai Zheng,Ganchang Lei,Shiping Wang,Yingying Zhan,Lijuan Shen,Lilong Jiang
The reduction of nitrobenzene (Ph-NO 2 ) to aniline (Ph-NH 2 ) utilizes H 2 S as a hydrogen donor. This approach alleviates environmental pollution while enabling resource utilization. However, it remains a challenge to develop sulfur-resistant catalysts. Herein, we fabricated a series of MoS 2 /ZrO 2 catalysts via crystalline phase modulation engineering for the reduction of Ph-NO 2 by H 2 S to Ph-NH 2 . Systematic experiments demonstrate that amorphous ZrO 2 has the highest concentration of oxygen vacancies (O v ), which exhibits the highest activity and stability. As a result, the MoS 2 /a-ZrO 2 achieves a Ph-NO 2 conversion of 92 % and a Ph-NH 2 selectivity of 85.7 % at 1.5 MPa and 90 °C, which is superior to MoS 2 /m-ZrO 2 , MoS 2 /t-ZrO 2 , MoS 2 and ZrO 2 . In situ FT-IR measurements combined with full two-dimensional time of flight chromatography suggest a double H-induced dissociation pathway for the reduction of Ph-NO 2 to Ph-NH 2 by H 2 S. This study offers a viable strategy for the valorization of H 2 S into valuable resources.
研究领域:
催化化学
·
环境化学
·
材料科学
·
化学反应工程
·
光谱学
✓ 已验证
产品关联
DOI
高影响因子
VACUUM
·
2025
·
IF 3.9
Xiaohua Wang,Yanwei Li,Xinhui Jin,Guang Sun,Jianliang Cao,Yan Wang
The pressing need for health and environmental protection has sparked significant interest among researchers in exploring gas sensors made from metal oxide semiconductors (MOSs). Herein, a co-modification approach involving palladium (Pd) and palladium oxide (PdO) is introduced to enhance the sensing properties of indium oxide (In 2 O 3 ) to hydrogen sulfide (H 2 S). Pd and PdO co-modified In 2 O 3 hierarchical porous nanocubes (Pd/PdO-In 2 O 3 HPNCs) were synthesized using a facile hydrothermal method. With the theoretical doping amount of 2 mol%, the synergistic effect of metal Pd and PdO-In 2 O 3 heterojunction made Pd/PdO-In 2 O 3 show excellent sensing performance to H 2 S compared to In 2 O 3 . Specifically, the material features a lower operating temperature (280 vs 300 °C), higher sensitivity (95.06 vs 28.59 to 20 ppm H 2 S; 2.28 vs 1.17–100 ppb H 2 S), and better selectivity (7.41 vs 2.32 times to triethylamine), while also demonstrating satisfactory reproducibility and stability. The synergistic sensitization mechanism of noble metal catalysis and heterojunction in Pd/PdO–In 2 O 3 HPNCs, along with their underlying mechanism, was discussed. Integrating noble metal modification with heterojunctions adds complexity to the structure and composition of the material. The synergistic effects of these two sensitization strategies on the H 2 S sensitization mechanism need further in-depth investigation.
研究领域:
材料科学
·
化学传感器
·
纳米技术
·
环境监测
·
半导体物理
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Ren-Min Zhou,Ying Chen,Yu-Shuang Zheng,Kai Wang,Guo-Rong Tang,Qiong Lin
Helicobacter pylori ( H. pylori ) is a gram-negative, spiral-shaped, microaerophilic bacterium that specifically colonizes the human gastric mucosa. Distinguished as the sole microorganism capable of surviving the harsh acidic environment of the stomach, this unique adaptation underpins its pivotal role in the onset and progression of gastric diseases. Consequently, H. pylori is recognized as the primary etiological agent of chronic gastritis, a condition that presents significant global health challenges. This work reports the development of a newly engineered hemicyanine-based molecular probe, designated HD-WY , for the real-time and highly sensitive quantification of hydrogen sulfide (H 2 S), a key gaseous signaling molecule involved in gastritis and associated disease mechanisms. The HD-WY probe functions via an H 2 S-specific activation mechanism, which induces a marked enhancement in both optical absorption and fluorescence intensity. Exhibiting a linear response to H 2 S concentrations, the probe achieves a low detection limit of 160 nM. In cellular assays, the probe effectively monitored real-time variations in endogenous H 2 S levels, with approximately 17-fold fluorescence increase from the 2.5 μM HD-WY group to the 10.0 μM group and approximately 3-fold fluorescence from the 0 min group to the 60 min group, validating its utility for the early detection and continuous observation of gastritic conditions. A notable finding was the probe's capacity to differentiate between healthy controls and gastritis patients, demonstrating a marked increase (approximately 50-fold) in fluorescence output within patient-derived samples, thereby highlighting its diagnostic potential. Complementary histopathological evaluation using hematoxylin and eosin (H&E) staining further verified distinct morphological changes in gastric tissues from gastritis subjects relative to healthy counterparts. The demonstrated high specificity, robust stability, and excellent biocompatibility of the HD-WY probe under physiological settings underscore its promising utility in clinical diagnostic procedures and biomedical research, furnishing a dependable tool for non-invasive disease monitoring and facilitating timely therapeutic strategies.
✓ 已验证
DOI
高影响因子
Advanced Science
·
2026
·
IF 14.1
Zhiheng Chen,Xinkai Pu,Ruiyang Li,Yuezhou Wu,Qirong Zhou,Jian Wang,Yuxuan Qian,Fengjie Lu,Jian-Yuan Zhao,Zhida Su,Jiacan Su,Xiaofeng Lian
As a severe and disabling central nervous system disorder, spinal cord injury (SCI) remains challenging, partly because of the difficulty in addressing secondary injury caused by the blood-spinal cord barrier (BSCB) disruption. As the neurovascular unit's crucial component, the BSCB regulates the homeostasis of the spinal cord. Inspired by the established protective effect of H 2 S in pan-vascular pathologies, we engineered an intravenously administered nanoparticle SPRC@MPDA-RGD. By utilizing the overexpression of α v β 3 integrin on endothelial cells after SCI, the functionalized peptide c(RGDyK) can guide SPRC@MPDA-RGD for precise delivery to the BSCB. The MPDA scaffold has the ability to both deliver S-propargyl-cysteine (SPRC) and scavenge reactive oxygen species (ROS). Subsequently, the release of SPRC upregulates cystathionine γ-lyase (CSE) and stimulates endogenous H 2 S production in injured endothelial cells, thereby protecting the BSCB. We also investigated the biological mechanisms underlying the therapeutic effects of SPRC@MPDA-RGD. The production of H 2 S in endothelial cells activates the PI3K/Akt/mTOR pathway, which subsequently suppresses ferritinophagy, reduces ferritin degradation, and ultimately suppresses ferroptosis. In summary, our work proposes a nanotherapeutic strategy that coordinates H 2 S production and ROS scavenging to inhibit ferritinophagy, thereby promoting BSCB repair, showing significant potential in promoting SCI treatment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Materials Today Chemistry
·
2025
·
IF 6.7
Xianjie Xu,Yanyan Wang,Xiuquan Gu,Xinkai Qi,Hongwei Liu,Lei Zhu,Peng Wang,Sheng Huang
Hydrogen sulfide (H 2 S) is a highly toxic gas, making its efficient and energy-saving detection at room temperature critical for industrial safety and environmental monitoring. In this work, a Cs 3 Cu 2 I 5 /TiO 2 composite was fabricated via in situ pyrolytic encapsulation. The composite exhibits high sensitivity (0.29 @1 ppm), rapid response (25 s), and excellent selectivity toward H 2 S at room temperature. Theoretical calculations reveal that incorporating TiO 2 narrows the bandgap from 2.260 eV to 1.296 eV, thereby enhancing carrier mobility. Furthermore, TiO 2 passivation elevates the formation energy of iodine vacancies from 4.11 eV to 6.60 eV, suppressing defect migration and improving chemical stability (decay <6.7 % over 15 days). Calculated adsorption energies confirm significantly stronger adsorption of H 2 S (−4.44 eV) on Cs 3 Cu 2 I 5 /TiO 2 compared to CO (−2.39 eV), CH 4 (−2.57 eV), SO 2 (−2.74 eV), and H 2 (−1.93 eV), consistent with experimental selectivity. To mitigate humidity interference, dynamic sensor signals were mapped into two-dimensional images using a Gramian Angular Summation Field (GASF) and processed via an AlexNet-based convolutional neural network. This approach achieves 97 % accuracy in interference elimination through time-series feature extraction. This study establishes a new paradigm for regulating electronic states, defects, and band structures in room-temperature gas sensors, advancing the development of intelligent sensing technologies.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2025
·
IF 8.2
Bingchen Zhu,Weihao Fang,Jia Yan,Yue Kang,Yi Tian,Kunmei Yang,Jiazhen Zhang,Yingping Zhang,Hui Xu,Zhilong Song
The detection of hydrogen sulfide (H2S) in humid environments remains a significant challenge, particularly in wearable gas sensors where humidity, mechanical flexibility, and power consumption are critical constraints. In this study, we introduce a stretchable, humidity-resistant H2S sensor based on microcrumpled SnO2 quantum-wire films, designed for efficient gas detection at room temperature with low-power consumption. The sensor’s architecture enhances gas adsorption by increasing the active surface area while minimizing water accumulation through surface energy modulation. This innovative microwrinkle topology results in rapid (<60 s) detection of H2S with high sensitivity (0.01 to 5 ppm) and excellent selectivity (5.6 times higher than individual interfering gas), even under 80% relative humidity, outperforming current state-of-the-art room temperature sensors. The device exhibits long-term stability with minimal response fluctuations (2.08% relative standard deviation) over 30 days of continuous testing. Furthermore, integrated into a flexible platform, it enables real-time, wireless H2S monitoring during dynamic human motions, as demonstrated in simulated industrial environments. This work provides a robust solution to the environmental challenges that hinder the development of reliable wearable gas sensors.
研究领域:
材料科学
·
传感器与传感技术
·
环境监测
·
可穿戴电子
·
纳米材料
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2019
·
IF 5.155
Yao Zhu,Huan Yi,Qiaoyan Hao,Jidong Liu,Yuxuan Ke,Zhuo Wang,Dianyuan Fan,Wen jing Zhang
Monolayer WS 2 (1L-WS 2 ) possesses direct band gap, which is beneficial for light emitting applications. However, high quality sample obtained via mechanical exfoliation suffers from ultralow yield of large flakes while large 2D material monolayers synthesized by chemical vapour deposition (CVD) unintentionally induce many defects, resulting in low photoluminescence (PL) intensity. Herein, we firstly control the 1L-WS 2 scalable growth through H 2 introduction at the beginning of the CVD synthesis. Its domain size can be increased from 1 μm up to 20 μm with higher coverage, compared to that synthesized without H 2 introduction. Then, we propose scalable ways to anneal the obtained large 1L-WS 2 in Ar diluted hydrogen sulfide (H 2 S) atmosphere at 750 °C or to treat it with (3-mercaptopropyl) trimethoxysilane (MPS). Its PL intensity can be increased to 12 times by H 2 S or more interestingly to 30 times by MPS, respectively. Our systematic analyses show that the drastic PL improvements are mainly attributed to the reduction of structural defects by H 2 S and MPS, which is facilitated via the H– bond in them. The results help to explore routes to obtaining large-size single crystalline transition metal dichalcogenides monolayer (1L-TMDCs) and intense PL emission.
研究领域:
材料科学
·
纳米科技
·
凝聚态物理
·
表面科学
·
半导体材料
✓ 已验证
DOI
高影响因子
AICHE JOURNAL
·
2016
·Vol. 62
·期 12
·4480-4490
·
IF 2.98
Kuan Huang,Xiao-Min Zhang,Xing-Bang Hu,You-Ting Wu
Developing absorbents with both high absorption capacity of H 2 S and large selectivity of H 2 S/CO 2 is very important for natural gas sweetening process. To this end, a class of novel hydrophobic protic ionic liquids (ILs) containing free tertiary amine group as functional site for the absorption of H 2 S were designed in this work. They were facilely synthesized through a simple neutralization-metathesis methodology by utilizing diamine compounds and bis(trifluoromethylsulfonyl)imide as the building blocks for cation and anion, respectively. Impressively, the solubility of H 2 S can reach 0.546 mol mol −1 (1 bar) and 0.225 mol mol −1 (0.1 bar), and the selectivity of H 2 S/CO 2 can reach 37.2 (H 2 S solubility at 1 bar vs. CO 2 solubility at 1 bar) and 15.4 (H 2 S solubility at 0.1 bar vs. CO 2 solubility at 1 bar) in the hydrophobic protic ILs at 298.2 K. Comparing the hydrophobic protic ILs with other absorbents justifies their superior performance in the selective absorption of H 2 S from CO 2 . © 2016 American Institute of Chemical Engineers AIChE J , 62: 4480–4490, 2016
研究领域:
化学工程
·
气体分离
·
离子液体
·
环境化学
✓ 已验证
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2023
·
IF 7.4
Jing Li,Cailing Zhu,Wenjing Peng,Xiaoqing Cao,Hui Gao,Mengyuan Jiang,Zengqiang Wu,Chunmei Yu
Hydrogen sulfide (H2S), as the third gas transporter in biological systems, plays a key role in the regulation of biological cells. Real-time detection of local H2S concentration in vivo is an important and challenging task. Herein, we explored a novel and facile strategy to develop a flexible and transparent H2S sensor based on gold nanowire (AuNW) and carbon nanotube (CNT) films embedded in poly(dimethylsiloxane) (PDMS) (AuNWs/CNTs/PDMS). Taking the advantage of the sandwich-like nanostructured network of AuNWs/CNTs, the prepared electrochemical sensing platform exhibited desirable electrocatalytic activity toward H2S oxidation with a wide linear range (5 nM to 24.9 μM) and a low dete ction limit (3 nM). Furthermore, thanks to the good biocompatibility and flexibility of the sensor, HeLa cells can be cultured directly on the electrode, allowing real-time monitoring of H2S released from cells under a stretched state. This work provides a versatile strategy for the construction of stretchable electrochemical sensors, which has potential applications in the study of H2S-related signal mechanotransduction and pathological processes.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICA CHIMICA ACTA
·
2021
·
IF 6.558
Huawei Niu,Xintong Mi,Xinting Hua,Yuanyuan Zhang,Yaping Zhai,Fangyuan Qin,Yong Ye,Yufen Zhao
The reaction of NO and H 2 S to form HNO is a classical pathway in physiological conditions. The reported single recognition-type fluorescent probes are difficult to track precisely the relationships of H 2 S and HNO. It is necessary to develop a bifunctional fluorescence probe ( NJA ) for monitoring simultaneously the production of endogenous HNO and H 2 S. Using 7-Nitrobenzofurazan (NBD) and 2-(diphenylphosphine) benzoate as recognition sites, the obatined NJA can detect specifically HS − and HNO. The detection limit of HS − and HNO are 0.46 μM and 1.42 μM, respectively. Based on the dual recognition sites and input signals of the probe, a molecular “AND” logic gate was established to detect successfully H 2 S and HNO in MCF-7 cells. NJA based on “AND logic” provided a simple and robust tool for monitoring the production of endogenous HNO correlative with H 2 S and NO in living cells.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2023
·
IF 7.4
Wei Hu,Jingchun Huang,Junwen Wang,Di Xie,Zhenqi Wang,Yu Qiao,Minghou Xu
The N-doped activated carbon is a potential material for H 2 S removal, reusing N-rich waste aqueous as a nitrogen source is promising to prepare in-expensive N-doped activated carbon. In this study, N-rich waste aqueous assisted hydrothermal carbonization and KOH activation were used to prepare activated carbon from starchy waste, concentrating on the effects of the nitrogen species (inorganic-N and organic-N) on the physicochemical characteristics and desulfurization performance of carbon material. Introducing inorganic-N (i.e., NH 3 ·H 2 O) can increase the defect degree and enhance the formation of micropores and mesopores for N-doped activated carbon, leading to high storage ability for desulfurization products and well oxidation performance. The organic-N (i.e., alanine) was conducive to forming pyridinic-N and quinonyl for N-doped activated carbon, resulting in a strong ability of adsorption, dissolution, and oxidation for H 2 S. The organic-N determined the high breakthrough sulfur capacity for hydrothermal aqueous doping activated carbon (110.7 mg/g), which was ∼ 4.08 times than undoped activated carbon. The primary product of the desulfurization process was elemental sulfur (74.08%), with sulfuric acid and sulfonic acid as the subsequent by-products. After nitrogen doping, the contents of elemental sulfur and sulfuric acid increased by 5.65 and 1.73 times, respectively. The results revealed the correlations between nitrogen species in hydrothermal aqueous and the desulfurization performance of activated carbon, which could guide the selection of nitrogen-rich aqueous for synthesizing H 2 S removal N-doped activated carbon via the above novel method.
✓ 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）