Psychoactive Plant Database - Neuroactive Phytochemical Collection

1. ACS Appl Mater Interfaces. 2024 Nov 6. doi: 10.1021/acsami.4c12095. Online
ahead  of print.

Hydrophobic Modification of Halloysite Nanotubes Loaded with a Small Amount of 
Tungsten Oxide for Efficient Oxidative Desulfurization.

Xiao Y(1)(2), Jiang N(1)(2), Liao M(1)(2), Pi X(1)(2), Zhang Z(1)(2), Peng 
C(1)(2), Zhang L(1)(2), Wu H(1)(2), Guo J(1)(2).

Author information:
(1)Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, 
School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, 206 
Guanggu first Road, Wuhan 430073, P. R. China.
(2)Engineering Research Centre of Phosphorus Resources Development and 
Utilization of Ministry of Education, School of Chemical Engineering and 
Pharmacy, Wuhan Institute of Technology, 206 Guanggu first Road, Wuhan 430073, 
P. R. China.

Transition metal oxides can be used as efficient multiphase catalysts in the 
field of catalysis. In this study, a hydrophobic halloysite nanotube (HNT) 
catalyst was designed and prepared with a low loading. Tungsten oxide was 
immobilized on the inner surface of the HNT, through electrostatic adsorption 
and calcination. Furthermore, a dual-functional W/HMT/M catalyst was prepared by 
hydrophobic modification of the outer surface of HNT through a harmless and 
nontoxic method. The catalyst was applied in the oxidative desulfurization (ODS) 
of dibenzothiophene (DBT), and characterized by inductively coupled plasma 
(ICP), contact angle tests, and other methods. Systematic characterization 
further confirmed that W/HNT/M has a low loading (0.48 wt %) and a relatively 
high contact angle of 92.6°. Oxidative desulfurization experiments demonstrated 
that the high contact angle corresponds to good hydrophobicity. The low loading 
and high activity of the catalyst enabled it to achieve a removal efficiency of 
100% for DBT under conditions of 60 °C and an O/S = 4. The hydrophobic surface 
of HNT allowed better dispersion in the oil phase, while its hydrophilic inner 
cavity could adsorb H2O2 and the converted dibenzothiophene sulfoxide, thereby 
reducing the subsequent extraction steps after oxidative desulfurization and 
enhancing the reaction environment for reactants and active oxygen. W/HNT/M 
maintained high activity for at least 5 cycles. Additionally, the potential 
mechanism of the catalyst in the aqueous ODS reaction was proposed. This study 
demonstrates that HNT-supported metal oxides have desulfurization potential and 
provides ideas for improving ODS catalytic activity of the ODS through low 
loading, high activity, and unique hydrophobicity design.

DOI: 10.1021/acsami.4c12095
PMID: 39506511


2. Clin Implant Dent Relat Res. 2024 Nov 6. doi: 10.1111/cid.13409. Online ahead
of  print.

The Effect of Implantoplasty on Fracture Resistance and Implant Surface Changes: 
An In Vitro and Finite Element Analysis Study.

Goh R(1), Li KC(1), Atieh MA(1)(2)(3), Ma S(1), Oliver A(1), Giraldo D(4), 
Tawse-Smith A(1).

Author information:
(1)Sir John Walsh Research Institute, Faculty of Dentistry, University of Otago, 
Dunedin, New Zealand.
(2)Mohammed Bin Rashid University of Medicine and Health Sciences, Hamdan Bin 
Mohammed College of Dental Medicine, Dubai Healthcare City, Dubai, UAE.
(3)School of Dentistry, University of Jordan, Amman, Jordan.
(4)Department of Shared Services, University of Otago, Dunedin, New Zealand.

INTRODUCTION: Implantoplasty can be performed on implants diagnosed with 
peri-implantitis to facilitate implant decontamination and improve access for 
oral home care. However, its effect on the mechanical strength of the implant is 
still uncertain. This study aimed to evaluate the effect of implantoplasty on 
the fracture resistance of dental implants with various degrees of bone loss, as 
well as its surface changes.
METHODS: Eighty 4.2 × 13 mm conical connection dental implants were allocated 
evenly into four groups based on the bone defect morphology: circumferential or 
semi-circumferential, and 3 or 5 mm vertical height. Half of the implants 
underwent implantoplasty with tungsten carbide finishing burs. Weight, volume, 
and surface roughness of the implants were recorded prior to and after 
instrumentation. All implants were subjected to static loading to failure or 
fracture and the implant surfaces were then analyzed using optical microscopy. 
Finite element analysis was carried out to assess the stress pattern on dental 
implants after implantoplasty.
RESULTS: Implantoplasty significantly reduced the fracture resistance of 
implants with all defect morphologies, aside from those with 3 mm of 
circumferential bone loss. Implants with 5 mm of peri-implant bone loss also 
experienced significantly reduced fracture resistance compared to the 3 mm 
group. Significant decrease in fracture resistance was only observed between the 
circumferential and semi-circumferential groups with 5 mm of bone loss. Surface 
roughness was also significantly reduced following implantoplasty. The results 
from finite element analysis revealed a change in pattern of stress 
concentration in the implant after implantoplasty.
CONCLUSION: Implantoplasty negatively impacted the fracture resistance of 
standard diameter dental implants in most scenarios. The increase in exposed 
implant length resulted in a decrease in fracture resistance. This increase in 
fracture risk should be considered prior to implantoplasty, especially in 
implants with more advanced bone loss.

© 2024 Wiley Periodicals LLC.

DOI: 10.1111/cid.13409
PMID: 39506335


3. Inorg Chem. 2024 Nov 6. doi: 10.1021/acs.inorgchem.4c02359. Online ahead of 
print.

Solid-State Reversible Phase Transition and Photoluminescence Properties of 
Organic-Inorganic Hybrid Halide: (BTPA)(2)MnBr(4).

Yu X(1), Liu Y(2), Liu Y(1), Li S(2), Tan H(2), Liu J(2), Chen Z(1).

Author information:
(1)Chibi Yuntian New Materials Technology Co., Ltd, Xianning, Hubei 437300, PR 
China.
(2)Ganzhou Key Laboratory of Advanced Processing and Technology Optimization of 
High Performance Tungsten Base Materials, College of rare earth and new 
materials engineering, Gannan University of Science and Technology, Ganzhou, 
Jiangxi 341000, PR China.

Multifunctional materials have long been a popular research area, with 
organic-inorganic hybrids frequently utilized due to their diverse properties 
and versatile assembly techniques. In this context, a novel Mn-based 
organic-inorganic hybrid compound (BTPA)2MnBr4(1) was prepared, with strong 
green photoluminescence, phase transition under thermal stimulation, and two 
reversible dielectric-state switches. This compound exhibits strong green 
photoluminescence under ultraviolet excitation, boasting a quantum yield of 
44.36%. Furthermore, it demonstrates a reversible ferroelastic phase transition 
at 358/348 K. The integration of temperature and photosensitivity in compound 1 
opens up new avenues for the development and exploration of a broader spectrum 
of multifunctional phase transition materials.

DOI: 10.1021/acs.inorgchem.4c02359
PMID: 39504113


4. Heliyon. 2024 Oct 17;10(20):e39414. doi: 10.1016/j.heliyon.2024.e39414. 
eCollection 2024 Oct 30.

Thermo-chemical environment-dependent vacancy formation in Fe(2)WO(6): A DFT 
study.

Seo K(1), Lee D(2), Lee S(2)(3).

Author information:
(1)Saint Stephen's Episcopal School, Austin, TX 78746, United States.
(2)Department of Materials Science and Engineering, Seoul National University, 
Seoul 08826, Republic of Korea.
(3)Research Institute of Advanced Materials, Seoul National University, Seoul 
08826, Republic of Korea.

Fe2WO6, known for its potential in photocatalytic and electrocatalytic 
applications due to its chemical stability and band structure, can exhibit 
various defects that influence its performance. Density functional theory (DFT) 
calculations were employed to determine the formation energies of iron, 
tungsten, and oxygen vacancies under different thermo-chemical environments 
within the Fe-W-O ternary system. The study reveals that oxygen vacancies are 
more likely to form in reducing environments rich in FeO and Fe3O4 and it can 
offer practicality through facilitating the formation of reactive oxygen species 
(ROS), which contribute to photocatalytic performance. Meanwhile, the formation 
of iron vacancies is more readily achieved in oxygen-rich conditions, 
particularly when Fe-W-O compounds can be constructed. Similarly, tungsten 
vacancies form more often in oxygen-rich environments but less in iron 
oxide-rich conditions. In conclusion, this study provides a more comprehensive 
understanding of the nature of vacancy defects in Fe2WO6 and elucidates the 
environmental conditions that can be exploited to maximize or minimize vacancy 
formation for the control of catalytic activity.

© 2024 The Authors.

DOI: 10.1016/j.heliyon.2024.e39414
PMCID: PMC11535975
PMID: 39502217

Conflict of interest statement: The authors declare that they have no known 
competing financial interests or personal relationships that could have appeared 
to influence the work reported in this paper.


5. RSC Adv. 2024 Nov 4;14(47):35064-35073. doi: 10.1039/d4ra06275b. eCollection 
2024 Oct 29.

Improved energy storage performance and thermal stability of hafnium-substituted 
strontium sodium niobate tungsten bronze ceramics.

Feng W(1), Ding L(1), Zhang J(1), Zhu C(1), Song S(1).

Author information:
(1)Jiangsu Key Laboratory of Zero-Carbon Energy Development and System 
Integration, School of Environmental Science, Nanjing Xiaozhuang University 
Nanjing 211171 China fwbnx@njxzc.edu.cn.

Dielectric capacitors are widely used in the field of pulsed power systems owing 
to their ultra-fast charge and discharge capacity; however, considering the 
complex environment they face in practical applications, how to further improve 
their thermal stability is an urgent issue that needs to be solved. Tungsten 
bronzes have the potential to broaden the temperature stability range owing to 
their unique structure, but only few studies have focused on them. Herein, 
lead-free Sr4-x La x Na2Hf x Nb10-x O30 ceramics with a tungsten bronze 
structure were synthesized, and their energy storage properties were 
comprehensively characterized. With proper Hf substitution in the B site and 
rare earth substitution in the A site, significantly enhanced relaxor behavior 
is induced, leading to a broad plateau of the dielectric curve, slim 
polarization-electric field loop, high energy storage efficiency and stable 
capacitive performance over a wide temperature range. In addition, an improved 
microstructure with fewer defects, decreased average grain size, increased band 
gap and resistance were obtained, which benefit to the increase in breakdown 
strength and energy storage density. Finally, improved energy storage 
performance and thermal stability were achieved for the compounds, with W total 
= 3.6 J cm-3, W rec = 2.9 J cm-3, η = 80% and stable temperature range = 20-160 
°C. Thus, the current system is a promising candidate for application in 
temperature-stable dielectric capacitors.

This journal is © The Royal Society of Chemistry.

DOI: 10.1039/d4ra06275b
PMCID: PMC11534001
PMID: 39497767

Conflict of interest statement: There are no conflicts to declare.