ANALYTICA CHIMICA ACTA
·
2021
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IF 6.558
Yingzhou Tao,Yisheng Lin,Fang Luo,Caili Fu,Cuiying Lin,Yu He,Zongwei Cai,Bin Qiu,Zhenyu Lin
Hydrogen sulfide (H 2 S), as a hazardous gas, is often found around dump areas. Long term exposure can cause harm to health, it is highly necessary to develop some simple and sensitive methods for on-site H 2 S detection. Herein, a convenient photothermal assay has been designed for the quantitation of H 2 S using a handheld thermometer as readout. Au@Ag nanocubes (Au@Ag NCs), a core-shell nanocomposite with strong light absorption at ∼450 nm, was chosen as a novel photothermal agent in this study. Under the laser irradiation at 450 nm, the Au@Ag NCs show a strong photothermal effect, and a significant temperature enhancement can be measured by the thermometer easily. The presence of H 2 S can lead to the deposition of sulfur onto Au@Ag NCs, altering the localized surface plasmon resonance absorption, size, surface composition, and morphology of Au@Ag NCs and hence leading to the reduction of photothermal effect. The change of the temperature has a linear relationship with the H 2 S concentration in the range of 0.5–80.0 μM with a detection limit of 0.35 μM. By combining with simple sample purification procedures, the developed method has been applied to detect H 2 S in garbage odor gas with satisfactory results.
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2021
·
IF 4.539
Junmei Fan,Enrui Wu,Jinlong Dong,Ruitao Zhu,Meiqin Li,Jiangning Gao,Hongfei Han,Liping Ding
Great efforts have been made to detect hydrogen sulfide (H 2 S) due to its involvements in various physiological processes and disease diagnosis. In the present work, a novel dansyl-based derivative ( DBr ) was synthesized and used as a FRET donor, and pyronine Y ( PyY ) was used as a FRET acceptor for constructing a ratiometric fluorescent sensor with assisstance of surfactant. The non-covalent ternary sensor platform could interact with H 2 S, causing an orange to blue-green fluorescence change as the acceptor emission decreased and the donor emission increased. The remarkable ratiometric response empowers the present system a high sensitivity to H 2 S with a detection limit of 110 nM. Moreover, the detection of H 2 S in serum could also be realized, providing the possibility for practical applications.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2020
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IF 3.232
Selvaraj Muthusamy,Kanagaraj Rajalakshmi,Qingxiang Xu,Yan Chen,Long Zhao,Weihua Zhu
Detection of H 2 S to analyze some diseases in living lives demands fast response, high selectivity and biocompatibility. Here we designed an azide containing coumarin attached with 8-aminoquinoline via amide backbone (ACAQ) fluorophore as the H 2 S sensing probe. Excellent response time of 6 min, high sensitivity with the limit of detection (LOD) of 14.6 nM and high selectivity with other possible interferences are revealed for ACAQ after characterized by spectroscopy, 1 H NMR titration and LC–MS measurements. The sensing strategy is explained by amide-iminol tautomerism and azide reduction. In addition, the successful visualization measurement suggests the practicability of the probe ACAQ for H 2 S detection in live samples.
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PubMed
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Diming Zang,Xiangyang Wei,Qingyuan Liu,Ying Li,Rui You
The detection of hydrogen sulfide (H 2 S) plays a critical role in environmental monitoring and breath analysis for medical diagnostics. For metal oxide semiconductor film-based gas sensors, the quality of the gas-sensitive material and the method of forming the gas-sensitive film on planar electrodes are critical determinants of sensor performance. In this study, a flower-like ZnO@ZnWO 4 heterojunction was directly grown on the surface of a micro-hotplate for gas sensor applications using a two-step method involving block copolymer self-assembly and chemical vapor deposition. The gas sensors demonstrated exceptional performance in detecting H 2 S over a range of 50 ppb to 50 ppm. At an operating temperature of 200 °C, the gas sensor exhibited a remarkable response value (R=127.31) for 5 ppm H 2 S and an outstanding selectivity coefficient of 117.4. Additionally, the sensor maintained 95 % of its original response value over a month. These superior performance metrics are attributed to the n-n heterostructure between ZnO and ZnWO 4 , along with the extensive specific surface area and the presence of oxygen vacancies in the flower-like morphology. This novel approach not only enhances H 2 S detection performance but also significantly contributes to the development of gas sensors crucial for environmental monitoring and human health protection.
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高影响因子
Journal of Environmental Sciences
·
2024
·
IF 5.9
Kaini Ma,Kai Li,Ping Ning,Jiayu Feng,Jiacheng Bao,Lei Shi,Xiangyu Wang,Xin Sun
This study employed a wet impregnation method to synthesize five types of Cu/HZSM-5 adsorbents with Si/Al ratios of 25, 50, 85, 200, and 300, used for the removal of H 2 S in low-temperature, low-oxygen environments. The impact of different Si/Al ratios on the adsorption oxidative performance of Cu 30 /HZSM-5–85 adsorbents was investigated. According to the performance test results, Cu 30 /HZSM-5–85 exhibited the highest breakthrough capacity, reaching 231.75 mg H 2 S/g sorbent . Cu/HZSM-5 sorbent maintains a strong ability to remove H 2 S even under humid conditions and shows excellent water resistance. XRD , BET, and XPS results revealed that CuO is the primary active species, with Cu 30 /HZSM-5–85 having the largest surface area and highest CuO content, providing more active sites for H 2 S adsorption. H 2 -TPR and O 2 -TPD results confirmed that Cu 30 /HZSM-5–85 sorbent exhibits outstanding redox properties and oxygen storage capacity, contributing to excellent oxygen transferability in the molecular sieve adsorption-oxidation process. With notable characteristics such as a large surface area, high desulfurization efficiency, and water resistance, Cu 30 /HZSM-5–85 sorbents hold significant importance for industrial applications.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Lei Zhang,Zhen Zhao,Hongming Zhang,Wanli Jiao
To detect trace hydrogen sulfide (H 2 S) safely, more sensitively and less expensively, a new synthesized ZIF-8-derived ZnO-supported Ag nanoparticle assemblies have been investigated. In the successful formation, ZIF-8 was synthesized in room temperature aqueous solution, followed by ultrasonication to produce Ag + /ZIF-8 compounds, and yielded Ag/ZnO assemblies after sintering. Various characterizations have been done to confirm the morphology, surface chemical state and electron distribution by XRD, SEM, XPS, BET and DRIFT. The sensing test results indicate that at an exciting operating temperature of 100 °C, the A-2 labeled sensor exhibits excellent H 2 S detection capabilities, including a response value of 104 for 2.5 ppm H 2 S, the minimum detection limit of 1.1 ppb, satisfied selectivity, significant resilience against humidity and long time stability. More significantly, a valuable test of 140 h real time detection of the H 2 S emission from fresh fish meat has been performed successfully, providing effective data for protein spoilage assessment. Rhombic dodecahedron structure, catalysis of Ag nanoparticles and overflow effect of H 2 S result in the distinct sensing mechanism, providing novel insights and theoretical foundations for developing highly efficient trace H 2 S gas sensors.
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SENSORS AND ACTUATORS B-CHEMICAL
·
2024
·
IF 8
Chunyuan Tian,Feiyan Tang,Mingxia Wang,Jie Zhou,Xidian Yue,Feng Luan,Xuming Zhuang
In this work, an eco-friendly and rapid dual-mode detection method for H 2 S based on europium oxide doped with carbon quantum dots nanocomposites (Eu 2 O 3 @CDs NPs) is proposed. An efficient electrochemiluminescence (ECL) sensor and dual emission ratio type fluorescence (FL) sensor was constructed by Eu 2 O 3 @CDs NPs, which exhibit excellent ECL and FL properties. It successfully realized the precise quantitative detection of H 2 S due to the influence of the sulfion (S 2- ) to resonance energy transfer mechanism in Eu 2 O 3 @CDs NPs and the extremely short response time greatly improves the analysis efficiency. Ultimately, a good linear relationship in the concentration range of 1 pM to 10 mM and 50 nM to 0.5 mM of H 2 S was acquired, respectively, and the detection limit was as low as 0.0537 pM and 4.88 nM (S/N = 3). In addition, both sensors show excellent selectivity, and stability, and provide a novel idea for establishing H 2 S sensors.
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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.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
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IF 9
Lijia Huang,Jiao Shen,Yi Yuan,Yaoqi Huang,Ying Liang,Shaojun Yuan
The development of efficient photocatalysts for hydrogen sulfide (H 2 S) degradation under visible light remains a critical challenge due to constraints in light absorption efficiency and rapid electron-hole recombination. In this study, a novel dual S-scheme ternary heterojunction photocatalyst, In-TiO 2 @BiOBr@In-TCPP (IBP), was synthesized via a hydrothermal method for high-performance H 2 S desulfurization. Comprehensive characterization confirmed the successful formation of the heterostructure, where In-TiO 2 facilitated spontaneous H 2 S dissociation, BiOBr served as an efficient electron transport medium, and In-TCPP extended the light absorption spectrum to 1200 nm. The optimized IBP-3 demonstrated exceptional performance, achieving complete H 2 S degradation (100 %) within 120 min under visible light irradiation and retaining over 70 % efficiency even after 8 h of continuous operation. Mechanistic investigations revealed that the synergistic integration of In-TiO 2 , BiOBr, and In-TCPP enhanced visible light utilization, suppressed charge carrier recombination, and promoted reactive oxygen species (ROS) generation via internal electric fields (IEF) and S-scheme charge transfer pathways. This study not only presents the rational engineering of multi-component systems for designing advanced heterojunction photocatalysts to address industrial desulfurization challenges, but also emphasizes the potential of tailored heterostructures in advancing sustainable environmental remediation technologies.
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CHEMICAL ENGINEERING JOURNAL
·
2023
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IF 15.1
Lulu Wang,Chenyang Zhou,Laihong Shen,Yuyang Long,Dongsheng Shen
Sulfur impurity in solid fuel should be paid attention to in the thermal process from the perspective of environment and sulfur recovery, especially the auto-thermal oxygen carrier aided pyrolysis/gasification (OCAP). To uncouple the complex sulfur transformation during OCAP of solid fuel and elucidate the main mechanism, several typical model compounds of various functional groups were used to investigate the kinetic analysis and sulfur transformation through temperature-programmed method. The OCAP process consisted of devolatilization and partial gasification. The activation energy of sulfur models devolatilization was less than that of partial gasification, because the required energy was much more to release lattice oxygen from oxygen carrier. Furthermore, the actual oxygen transport capacity of oxygen carrier (OC) redistributed the sulfurous gases. It was found that H 2 S was released earlier than SO 2 . H 2 S release was ascribed to the devolatilization including the reactions between radicals and hydrogen abstracted from base at low temperature (200–300 °C). The different contact modes between sulfur compounds and OC proved that S could be absorbed in the form of iron sulfide and incorporated into char at low temperature but released in the form of SO 2 by OC oxidation at the elevated temperature (400–600 °C), which was in accordance with the kinetic analysis. The migration of sulfur from disulfide had priority over that from monosulfide, and the sulfur connecting with dialkyl (benzyl) was easier to escape than that with diaryl (phenyl) in OCAP process. The fate of sulfur model compounds was conducive to reveal the complex behaviors of solid fuel with different sulfur species, and this work provides evidence to implement the desulfurization and sulfur recovery strategy.
研究领域:
化学工程
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环境科学
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能源技术
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2020
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IF 7.489
Qiang Liu,Bingsi Liu,Qinze Liu,Shitong Guo,Xuanyue Wu
Developing structurally stable sorbents for high-temperature H 2 S direct removal is recognized as a valuable energy-saving strategy for efficient utilization of hot coal gas (HCG), which depends upon their mesoporous features and desulfurization capabilities. Herein, tailored hierarchical Ca x Cu y Mn z O i /MAS-9 sorbents were fabricated via a facile sol–gel method using high-activity phase Ca x Cu y Mn z O i anchored onto versatile mesoporous MAS-9. After O/S-exchange procedure, noteworthy straight channels of MAS-9 ( S BET = 808 m 2 g −1 ) provided enough available spaces for the storage of generative large MeS y nanoparticles, which was better than other conventional zeolites. The probing of variables ( i.e. support type, active ingredient, loadings, and sulfidation temperature) on H 2 S removal revealed that 50%Ca 3 Cu 10 Mn 87 O i /MAS-9 shared an excellent breakthrough sulfur capacity (171.57 mg g −1 ) at 800 °C, even it experienced six reusable cycles, due to synergistic stabilizing effect of Ca-Cu-Mn and high-temperature tolerance of Si O Al framework of MAS-9. Especially, CaO dopant endowed the sorbent with superficial alkalinity and high-temperature resistance. The brilliant desulfurization behavior was also described by the fast H 2 S diffusion or component deactivation vs . duration time on stream according to the followed kinetic investigation. Thus, the refined Ca 3 Cu 10 Mn 87 O i /MAS-9 possesses the expected representative desulfurization nature and great potentiality for raw HCG in practical applications.
研究领域:
能源化学
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环境催化
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材料科学
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化学工程
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洁净煤技术
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多相催化
·
纳米材料
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高影响因子
Arabian Journal of Geosciences
·
2021
·Vol. 14
·期 8
·1-12
·
IF 1.827
Ding Kangle,Liu Yan,Guan Fujia,Yu Zhenzhen,Wu Yi
Sulfate reduction by activated carbon (AC), a model compound for solid bitumen (pyrobitumen) without gas generative potential, was studied experimentally for the first time. The simulation experiments show that hydrogen sulfide (H 2 S) is produced from hydrothermal reduction of calcium sulfate (CaSO 4 ) by AC at elevated temperatures. This result demonstrates that water can also act as a hydrogen source for H 2 S generation in addition to hydrocarbons. The formation mechanism of H 2 S may undergo a three-stage sequential process with calcium sulfide (CaS) as the unstable intermediate. The reactivity of carbon is thermodynamically higher than that of methane at ≥ 150 o C but lower than that of ethane or propane in sedimentary basins. Carbon-initiated sulfate reduction follows a zero–order reaction with an apparent activation energy E a of 172.36 kJ/mol. When extrapolated to the temperature range of typical oil and gas reservoirs (100–200 o C), the order of the rate constant is determined as propane > ethane > solid bitumen > methane in the TSR of CaSO 4 . Although solid bitumen contributes little to hydrocarbon gas generation, H 2 S derived from carbon-initiated sulfate reduction may act as an indispensable catalyst for the consequent alteration of methane by TSR in deep buried gas reservoirs with high dryness coefficient.
研究领域:
地质学
·
化学
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