氧化钨量子点胶体合成：高效H2S气体检测新策略
需积分: 9 198 浏览量
更新于2024-08-26
收藏 1.92MB PDF 举报
本研究论文探讨了"用于敏感和选择性H2S气体检测的氧化钨量子点的胶体合成"这一主题，发表在《传感器与执行器B：化学》(Sensors and Actuators B)的第248期(2017年)。氧化钨(WO3)，作为一种备受关注的材料，因其在气体传感器领域的优异性能而被广泛研究。论文的核心内容聚焦于通过胶体合成方法制备具有高灵敏度和选择性的氧化钨量子点，目标是应用于氢硫化物(H2S)气体的检测。
在当前的研究中，作者 Haoxiong Yu、Zhilong Song、Qian Liu 等来自中国华中科技大学光学与电子信息学院和大连海事大学信息科学与技术学院的研究团队，对氧化钨量子点的特性进行了深入探索。他们设计了一种创新的胶体合成工艺，旨在优化WO3纳米粒子的结构和功能，以便更有效地捕捉和响应H2S分子。氧化钨量子点由于其小尺寸和独特的表面效应，能够显著增强对H2S的吸附能力，并可能提供更快的响应速度和更好的选择性，这对于环境监测、工业过程控制以及安全领域中的H2S气体检测至关重要。
论文的历程显示，研究工作在2016年10月首次接收，经过修订后的版本在2017年2月10日再次提交，最终在同年3月11日获得接受，并于3月16日在线发布。关键词包括"气体传感器"、"氧化钨"、"量子点"、"胶体合成"以及"氢硫化物"，这些关键词突出了研究的主要内容和焦点。
这篇论文为气体传感器领域的研究者们提供了关于如何利用氧化钨量子点提高H2S气体检测性能的新视角和实验方法。通过胶体合成技术调控WO3纳米粒子的性质，有望推动未来在环境监测设备和工业应用中的实际应用。对于那些关注气体传感技术和新型材料在环保和安全领域应用的人来说，这篇论文具有很高的参考价值。
Sensors
and
Actuators
B
248
(2017)
1029–1036
Contents
lists
available
at
ScienceDirect
Sensors
and
Actuators
B:
Chemical
jo
ur
nal
home
page:
www.elsevier.com/locate/snb
Colloidal
synthesis
of
tungsten
oxide
quantum
dots
for
sensitive
and
selective
H
2
S
gas
detection
Haoxiong
Yu
a
,
Zhilong
Song
a
,
Qian
Liu
a
,
Xiao
Ji
a
,
Jianqiao
Liu
b
,
Songman
Xu
a
,
Hao
Kan
a
,
Baohui
Zhang
a
,
Jingyao
Liu
a
,
Jianjun
Jiang
a
,
Ling
Miao
a,∗
,
Huan
Liu
a,∗
a
School
of
Optical
and
Electronic
Information,
Huazhong
University
of
Science
and
Technology,
1037
Luoyu
Road,
Wuhan,
Hubei
430074,
PR
China
b
College
of
Information
Science
and
Technology,
Dalian
Maritime
University,
Linghai
Road
1,
Dalian,
Liaoning
116026,
PR
China
a
r
t
i
c
l
e
i
n
f
o
Article
history:
Received
14
October
2016
Received
in
revised
form
10
February
2017
Accepted
11
March
2017
Available
online
16
March
2017
Keywords:
Gas
sensor
Tungsten
oxide
Quantum
dot
Colloidal
synthesis
Hydrogen
sulfide
a
b
s
t
r
a
c
t
Tungsten
oxide
(WO
3
)
has
been
intensely
investigated
as
an
important
gas-sensing
materials.
Here
the
sensitive
and
selective
H
2
S
gas
sensors
based
on
WO
3
quantum
dots
that
were
synthesized
via
a
colloidal
process
using
WCl
6
ethanol
solutions
mixed
with
oleic
acid
and
oleylamine
were
demonstrated.
The
solution
processability
of
the
colloidal
WO
3
quantum
dots
enabled
a
room-temperature
sensor
fabrication
without
high-temperature
sintering.
The
optimal
sensor
response
toward
50
ppm
of
H
2
S
is
57
with
the
response
time
of
47
s,
and
the
response
was
fully
recoverable
upon
H
2
S
release
at
80
◦
C.
The
sensing
mechanism
was
discussed
by
using
first-principles
calculation
based
on
density
functional
theory
(DFT).
Their
highly
sensitive
and
fast
response
at
lower
operating
temperature,
combined
with
the
benefit
of
ease
fabrication,
make
the
colloidal
tungsten
oxide
quantum
dots
highly
attractive
for
the
construction
of
low
cost
gas
sensor
with
reduced
power
consumption.
©
2017
Published
by
Elsevier
B.V.
1.
Introduction
Hydrogen
sulfide
is
one
of
the
most
odorous
and
poisonous
gases
released
by
biological
processes.
It
is
also
produced
in
petroleum
fields
and
natural
gas
production,
detrimental
to
both
humans
and
the
environment.
Low
concentration
of
H
2
S
can
irritate
person’s
eyes,
respiratory
system
and
central
nervous
system,
and
H
2
S
with
concentration
higher
than
250
ppm
may
cause
death
[1].
According
to
the
Occupational
Safety
and
Health
Administration
(U.S.
Depart-
ment
of
Labor),
the
acceptable
concentration
limit
for
exposure
to
H
2
S
is
20
ppm
for
an
eight-hour
period,
with
the
maximum
peak
exposure
at
50
ppm
for
10
min.
Therefore,
reliable
gas
sensors
with
a
high
sensitivity
and
selectivity
to
low
concentration
of
H
2
S
are
urgently
required.
Metal
oxide
nanomaterials,
such
as
nanocrystalline
ZnO
[2],
SnO
2
[3],
TiO
2
[4],
Fe
2
O
3
[5],
and
In
2
O
3
[6]
are
promising
candidates
for
gas
sensors
due
to
their
low
cost,
ease
of
use,
high
sensi-
tivity,
fast
response
and
recovery.
Tungsten
oxide
(WO
3
)
exhibit
excellent
chemical
stability
and
sensitive
response
toward
a
wide
variety
of
gases
[7–10].
For
example,
hydrothermal/impregnation-
∗
Corresponding
authors.
E-mail
addresses:
miaoling@mail.hust.edu.cn
(L.
Miao),
huan@mail.hust.edu.cn
(H.
Liu).
synthesized
WO
3
nanorods
functionalized
with
Ru
had
a
high
sensor
response
of
192
(R
a
/R
g
)
to
10
ppm
of
H
2
S
at
350
◦
C
with
the
response
time
being
0.8
s
[11].
The
Pt-functionalized
WO
3
hemi-
tube
networks
had
a
response
of
7
to
2
ppm
of
H
2
S
at
300
◦
C
[12].
The
3D
structure
of
the
WO
3
nanowires
exhibited
a
response
of
100
toward
10
ppm
of
H
2
S
at
300
◦
C
[13].
However,
these
WO
3
gas
sen-
sors
have
to
be
operated
at
elevated
temperatures
above
300
◦
C,
thereby
requiring
high
power
consumption,
and
potential
safety
issues
may
be
caused.
Meanwhile,
their
capability
for
detecting
H
2
S
at
low
concentrations
needs
to
be
improved.
WO
3
nanoparticles-
based
sensor
had
a
response
of
750
toward
10
ppm
of
H
2
S
at
room
temperature,
with
the
response
time
being
several
minutes,
but
the
recovery
time
was
long
as
several
hours
[14].
The
response
of
the
PPy/WO
3
nanocomposites-based
sensor
toward
1
ppm
of
H
2
S
was
1.8
at
room
temperature,
with
the
response
and
recovery
time
being
6
and
210
min,
respectively
[15].
Overall,
most
H
2
S
gas
sen-
sors
based
on
WO
3
exhibit
high
sensitivity
and
fast
recovery
when
they
are
operated
at
elevated
temperatures.
It
remains
a
challenge
to
achieve
high
sensitivity
and
fast
response/recovery
properties
at
relatively
lower
temperatures.
Colloidal
quantum
dots
(CQDs)
have
been
shown
to
be
promis-
ing
candidates
for
applications
in
high
performance
solar
cells
[16],
photodetectors
[17]
and
gas
sensors
[18–20].
CQDs
have
large
and
sensitive
surface,
and
their
excellent
solution
processability
allow
for
precise
control
over
nanoparticle
size
and
facile
integration
http://dx.doi.org/10.1016/j.snb.2017.03.044
0925-4005/©
2017
Published
by
Elsevier
B.V.
下载后可阅读完整内容，剩余7页未读，立即下载
点击了解资源详情
点击了解资源详情
点击了解资源详情
2021-03-15 上传
2021-05-18 上传
2021-03-15 上传
点击了解资源详情
点击了解资源详情
2024-11-19 上传
weixin_38711008
- 粉丝: 8
- 资源: 939
我的内容管理
展开
最新资源
- 深入浅出：自定义 Grunt 任务的实践指南
- 网络物理突变工具的多点路径规划实现与分析
- multifeed: 实现多作者间的超核心共享与同步技术
- C++商品交易系统实习项目详细要求
- macOS系统Python模块whl包安装教程
- 掌握fullstackJS：构建React框架与快速开发应用
- React-Purify: 实现React组件纯净方法的工具介绍
- deck.js：构建现代HTML演示的JavaScript库
- nunn：现代C++17实现的机器学习库开源项目
- Python安装包 Acquisition-4.12-cp35-cp35m-win_amd64.whl.zip 使用说明
- Amaranthus-tuberculatus基因组分析脚本集
- Ubuntu 12.04下Realtek RTL8821AE驱动的向后移植指南
- 掌握Jest环境下的最新jsdom功能
- CAGI Toolkit：开源Asterisk PBX的AGI应用开发
- MyDropDemo: 体验QGraphicsView的拖放功能
- 远程FPGA平台上的Quartus II17.1 LCD色块闪烁现象解析
