SCIENCE OF THE TOTAL ENVIRONMENT
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2019
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IF 5.589
Jing Wang,Tianli Yang,Ren He,Kehui Xue,Renrui Sun,Wenlei Wang,Juntao Wang,Ting Yang,Yuanlan Wang
Ternary heterostructure nanotubes of In 2 S 3 -CdIn 2 S 4 @X(X = Ag, Ag 3 PO 4 , AgI) were synthesized with enhanced photocatalytic activity for efficiently degrading pollutants. Electron beam irradiation was employed to artificially introduce interface defects to the heterostructure nanotubes. The experimental results for degrading carmine and Cr 6+ under visible light irradiation showed that the photocatalytic efficiency of In 2 S 3 -CdIn 2 S 4 was improved to some extent by the introduction of silver compounds. DRS results confirmed that the band gaps of In 2 S 3 -CdIn 2 S 4 were reduced to 1.62 eV and 1.58 eV by introducing Ag 3 PO 4 and AgI, respectively. Interestingly, the band gap of In 2 S 3 -CdIn 2 S 4 @AgI after electron beam irradiation was further reduced to 1.56 eV, resulting in that the degradation time of both Cr 6+ and carmine by In 2 S 3 -CdIn 2 S 4 @AgI after high-energy electron beam irradiation was shortened to only 5 min. The XRD spectra of the photocatalysts after five cycles could maintain the original crystal form to a large extent. The O H stretching vibration peaks of In 2 S 3 -CdIn 2 S 4 @AgI after electron beam irradiation at 3387 cm −1 became wider and sharper, thus indicating that the number of free hydroxyl groups on the heterostructure surface significantly increased. PL results showed that electron beam irradiation could significantly reduce the PL emission peak and enhance the utilization of photogenerated charge carriers. EIS results further confirmed that In 2 S 3 -CdIn 2 S 4 @AgI processed by electron beam irradiation had higher photogenerated electron-hole separation efficiency. Based on the experimental results, a feasible reaction pathway and photocatalytic mechanism for the degradation of carmine was investigated. ESR results showed that the main active groups in the whole photocatalytic system were •O 2 – and h + .
研究领域:
材料科学
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环境科学
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DOI
PubMed
高影响因子
Nanoscale
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2022
·Vol. 14
·期 39
·14520-14528
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IF 8.307
Weiwei Xu,Ningbo Fan,Shiji Xu,Linxing Meng,Bin Xu,Min Zhou,Wei Tian,Liang Li
Introducing suitable interfacial chemical bonds into heterojunctions can increase the charge carrier density, propel the charge separation, and facilitate interfacial charge extraction in photoanodes for photoelectrochemical (PEC) water oxidation. However, tuning chemical bonds at heterojunction interfaces and elucidating their influences on band alignment and the associated evolution of PEC performance remain elusive. Herein, Bi–S bonds were introduced into the interface of a CdIn2S4 (CIS)/Bi2WO6 (BWO) heterojunction. In situ irradiated X-ray photoelectron spectroscopy and electron spin resonance signals confirm that the Bi–S bond transforms the band alignment from type II to the direct Z-scheme, significantly enhancing the carrier separation efficiency. Theoretical calculations show that the Bi–S bond not only acts as an atomic-level charge transfer channel, but also changes the migration pathway and distance within the heterojunction. As a result, the optimized CIS/BWO photoanode exhibits a relatively high PEC performance of 4.25 mA cm−2 at 1.23 V vs. RHE (VRHE) and a low onset potential of 0.30 VRHE. This work presents a new avenue to construct comprehensively improved photoanodes by tuning the interfacial structures at the atomic level.
研究领域:
材料科学
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光化学
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电化学
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可再生能源
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PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2021
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IF 19.503
Ming Zhang,Zhihao Yu,Jian Xiong,Rui Zhang,Xinzhong Liu,Xuebin Lu
The Cd x In y S ( x +1.5 y ) catalysts with gradient Cd:In ratios were controllably synthesized via an one-step hydrothermal approach. Particularly, the hydrothermal synthesis conferred those Cd x In y S ( x +1.5 y ) catalysts with Cd:In ratios over 1:2 with a one-dimensional–three-dimensional heterojunction structure composed of CdS nanorods and cubic-phase CdIn 2 S 4 . Our characterization evidences reflected that the CdS nanorods effectively promoted the separation of photoexcited electron–hole pairs in Cd x In y S ( x +1.5 y ) and enabled transboundary transfer of photogenerated carriers. Spectroscopic and experimental results were further employed to develop a detailed catalytic mechanism, in which the superoxide anion (•O 2 − ) plays an important role in the catalytic oxidation of HMF to DFF by Cd x In y S ( x +1.5 y ) . Unlike other photocatalysts with •O 2 − as the main active species, Cd 1.5 In 2 S 4.5 gives an excellent performance in HMF conversion. This shows the great potential of cadmium–indium sulfides as photocatalysts for biomass conversion under ambient conditions.
研究领域:
材料科学
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化学工程
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环境科学
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催化
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Guoqiang Zhang,Zhiqi Wang,Tao He,Jingli Wu,Jinzhi Zhang,Jinhu Wu
Exploring efficient and robust CO 2 photoreduction and water splitting photocatalysts are critical for closing the anthropogenic carbon cycle and developing H 2 energy source. Herein, ultrasmall pomegranate-like Z-scheme CdIn 2 S 4 /ZnIn 2 S 4 heterojunctions with abundant vacancies were rationally designed and in-situ constructed though L-cysteine assisted solvothermal method with precipitation conversion strategy. The obtained CdIn 2 S 4 /ZnIn 2 S 4 -3 photocatalyst displays the highest performance in the photocatalytic conversion of CO 2 and H 2 O into CO and H 2 with yields of 1194.5 and 475.7 μmolg −1 h −1 , respectively, which increase respectively by 62.2% and 123.1% compared to CdIn 2 S 4 under the visible light irradiation. In addition, CdIn 2 S 4 /ZnIn 2 S 4 -4 hybrid exhibits excellent stability and activity during the 23-hour continuous HER, the average yield of H 2 in 23-hour is up to 10286.6 μmolg −1 h −1 . This study provides a practical method for in-situ fabrication of ultrasmall pomegranate-like Z-scheme nano-heterostructures with abundant vacancies, which are valuable for efficient and robust implementation in a wide range of environmental and energy applications.
研究领域:
材料科学
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环境科学
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能源科学
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DOI
高影响因子
MICROCHEMICAL JOURNAL
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2025
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IF 5.1
Xuemin Qin,Zhi Luo,Shenglan Hu,Xuyang Deng,Jing Li,Lingling Zheng,Biyang Deng
In conventional co-reactant electrochemiluminescence (ECL), the efficiency of converting co- reactant into active intermediates is the primary factor limiting luminescence intensity. To address this limitation, we synthesized carboxyl-functionalized CdIn 2 S 4 (Cf-CdIn 2 S 4 ), which served dual roles as both a luminescent material and a co-reactant accelerator. As an emitter, Cf-CdIn 2 S 4 , generated strong and stable ECL signals upon excitation at −1.3 V. Furthermore, Cf-CdIn 2 S 4 exhibited remarkable electrocatalytic activity for K 2 S 2 O 8 activation. Through the In 3+ /In 2+ valence state transition, Cf-CdIn 2 S 4 significantly facilitated the conversion of S 2 O 8 2− to SO 4 ·− , achieving self-enhanced ECL signals. The pronounced quenching effect of Au@MoS 2 on the Cf-CdIn 2 S 4 ECL signal was exploited to develop a highly sensitive quenching-type ECL sensing platform for H-FABP. The developed immunosensor exhibited a broad linear detection range (10 fg/mL–100 ng/mL) and a low limit of detection (3.2 fg/mL, S/N = 3). This novel approach provides a highly sensitive and reliable platform for the early diagnosis of acute myocardial infarction and can be effectively utilized for the early screening of cardiovascular diseases and clinical monitoring of critically ill patients.
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高影响因子
NEW JOURNAL OF CHEMISTRY
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2025
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IF 2.5
Zhenglong Zhou,Dinghan Liu,Bing Yang,Jigang Wu,Rui Li
Cadmium indium sulfide (CdIn2S4), a widely used n-type semiconductor, has been considered a promising photoanode material for photoelectrochemical (PEC) water splitting due to its excellent light response characteristics and suitable energy levels. However, its application in the PEC field is limited by rapid carrier recombination on the surface and severe photocorrosion phenomena. In this study, a novel strategy is proposed by loading Cu2S onto the surface of CdIn2S4 via an ultrasound-assisted method to modify the CdIn2S4 photoanode. As a p-type semiconductor, Cu2S forms a p–n heterojunction with CdIn2S4, creating an internal electric field that facilitates charge transport. Additionally, the Cu2S overlayer acts as a cocatalyst, enhancing the surface reaction kinetics and improving the charge injection efficiency at the photoelectrode/electrolyte interface. The incorporation of Cu2S also reduces the photocorrosion on the CdIn2S4 surface. Experimental results demonstrate that the optimal Cu2S/CdIn2S4 photoanode exhibits a photocurrent of up to 0.3 mA cm−2 at 1.23 V versus the reversible hydrogen electrode, approximately ten times higher than that of bare CdIn2S4. This work offers an effective approach to modulate carrier dynamics, thereby enhancing the PEC performance of photoanodes.
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高影响因子
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